99ebc428b8
add placeholders for SkPath::shrinkToFit, debugging_private_getFreeSpace TBR=fmalita@chromium.org,reed@google.com NOTRY=true Docs-Preview: https://skia.org/?cl=153669 Bug: skia: Change-Id: I69b34a37dcdd7425e62d34e3b9a55981db354502 Reviewed-on: https://skia-review.googlesource.com/153669 Auto-Submit: Cary Clark <caryclark@skia.org> Commit-Queue: Cary Clark <caryclark@skia.org> Commit-Queue: Florin Malita <fmalita@chromium.org> Reviewed-by: Florin Malita <fmalita@chromium.org> Reviewed-by: Cary Clark <caryclark@skia.org>
6613 lines
331 KiB
Markdown
6613 lines
331 KiB
Markdown
SkPath Reference
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===
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# <a name='Path'>Path</a>
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<a href='#Path'>Path</a> contains <a href='undocumented#Line'>Lines</a> and <a href='undocumented#Curve'>Curves</a> which can be stroked or filled. <a href='#Contour'>Contour</a> is
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composed of a series of connected <a href='undocumented#Line'>Lines</a> and <a href='undocumented#Curve'>Curves</a>. <a href='#Path'>Path</a> may contain zero,
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one, or more <a href='#Contour'>Contours</a>.
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Each <a href='undocumented#Line'>Line</a> and <a href='undocumented#Curve'>Curve</a> are described by <a href='#SkPath_Verb'>Verb</a>, <a href='SkPoint_Reference#Point'>Points</a>, and optional <a href='#Conic_Weight'>Conic Weight</a>.
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Each pair of connected <a href='undocumented#Line'>Lines</a> and <a href='undocumented#Curve'>Curves</a> share common <a href='SkPoint_Reference#Point'>Point</a>; for instance, <a href='#Path'>Path</a>
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containing two connected <a href='undocumented#Line'>Lines</a> are described the <a href='#SkPath_Verb'>Verb</a> sequence:
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<a href='#SkPath_kMove_Verb'>SkPath::kMove Verb</a>, <a href='#SkPath_kLine_Verb'>SkPath::kLine Verb</a>, <a href='#SkPath_kLine_Verb'>SkPath::kLine Verb</a>; and a <a href='SkPoint_Reference#Point'>Point</a> sequence
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with three entries, sharing
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the middle entry as the end of the first <a href='undocumented#Line'>Line</a> and the start of the second <a href='undocumented#Line'>Line</a>.
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<a href='#Path'>Path</a> components <a href='#Arc'>Arc</a>, <a href='SkRect_Reference#Rect'>Rect</a>, <a href='SkRRect_Reference#RRect'>Round Rect</a>, <a href='undocumented#Circle'>Circle</a>, and <a href='undocumented#Oval'>Oval</a> are composed of
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<a href='undocumented#Line'>Lines</a> and <a href='undocumented#Curve'>Curves</a> with as many <a href='#Verb'>Verbs</a> and <a href='SkPoint_Reference#Point'>Points</a> required
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for an exact description. Once added to <a href='#Path'>Path</a>, these components may lose their
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identity; although <a href='#Path'>Path</a> can be inspected to determine if it describes a single
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<a href='SkRect_Reference#Rect'>Rect</a>, <a href='undocumented#Oval'>Oval</a>, <a href='SkRRect_Reference#RRect'>Round Rect</a>, and so on.
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### Example
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<div><fiddle-embed name="93887af0c1dac49521972698cf04069c"><div><a href='#Path'>Path</a> contains three <a href='#Contour'>Contours</a>: <a href='undocumented#Line'>Line</a>, <a href='undocumented#Circle'>Circle</a>, and <a href='#Quad'>Quad</a>. <a href='undocumented#Line'>Line</a> is stroked but
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not filled. <a href='undocumented#Circle'>Circle</a> is stroked and filled; <a href='undocumented#Circle'>Circle</a> stroke forms a loop. <a href='#Quad'>Quad</a>
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is stroked and filled, but since it is not closed, <a href='#Quad'>Quad</a> does not stroke a loop.
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</div></fiddle-embed></div>
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<a href='#Path'>Path</a> contains a <a href='#Fill_Type'>Fill Type</a> which determines whether overlapping <a href='#Contour'>Contours</a>
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form fills or holes. <a href='#Fill_Type'>Fill Type</a> also determines whether area inside or outside
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<a href='undocumented#Line'>Lines</a> and <a href='undocumented#Curve'>Curves</a> is filled.
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### Example
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<div><fiddle-embed name="36a995442c081ee779ecab2962d36e69"><div><a href='#Path'>Path</a> is drawn filled, then stroked, then stroked and filled.
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</div></fiddle-embed></div>
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<a href='#Path'>Path</a> contents are never shared. Copying <a href='#Path'>Path</a> by value effectively creates
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a new <a href='#Path'>Path</a> independent of the original. Internally, the copy does not duplicate
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its contents until it is edited, to reduce memory use and improve performance.
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## <a name='Contour'>Contour</a>
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<a href='#Contour'>Contour</a> contains one or more <a href='#Verb'>Verbs</a>, and as many <a href='SkPoint_Reference#Point'>Points</a> as
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are required to satisfy <a href='#Verb_Array'>Verb Array</a>. First <a href='#SkPath_Verb'>Verb</a> in <a href='#Path'>Path</a> is always
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<a href='#SkPath_kMove_Verb'>SkPath::kMove Verb</a>; each <a href='#SkPath_kMove_Verb'>SkPath::kMove Verb</a> that follows starts a new <a href='#Contour'>Contour</a>.
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### Example
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<div><fiddle-embed name="0374f2dcd7effeb1dd435205a6c2de6f"><div>Each <a href='#SkPath_moveTo'>SkPath::moveTo</a> starts a new <a href='#Contour'>Contour</a>, and content after <a href='#SkPath_close'>SkPath::close()</a>
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also starts a new <a href='#Contour'>Contour</a>. Since <a href='#SkPath_conicTo'>SkPath::conicTo</a> is not preceded by
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<a href='#SkPath_moveTo'>SkPath::moveTo</a>, the first <a href='SkPoint_Reference#Point'>Point</a> of the third <a href='#Contour'>Contour</a> starts at the last <a href='SkPoint_Reference#Point'>Point</a>
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of the second <a href='#Contour'>Contour</a>.
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</div></fiddle-embed></div>
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If final <a href='#SkPath_Verb'>Verb</a> in <a href='#Contour'>Contour</a> is <a href='#SkPath_kClose_Verb'>SkPath::kClose Verb</a>, <a href='undocumented#Line'>Line</a> connects <a href='#Last_Point'>Last Point</a> in
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<a href='#Contour'>Contour</a> with first <a href='SkPoint_Reference#Point'>Point</a>. A closed <a href='#Contour'>Contour</a>, stroked, draws
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<a href='SkPaint_Reference#Stroke_Join'>Paint Stroke Join</a> at <a href='#Last_Point'>Last Point</a> and first <a href='SkPoint_Reference#Point'>Point</a>. Without <a href='#SkPath_kClose_Verb'>SkPath::kClose Verb</a>
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as final <a href='#SkPath_Verb'>Verb</a>, <a href='#Last_Point'>Last Point</a> and first <a href='SkPoint_Reference#Point'>Point</a> are not connected; <a href='#Contour'>Contour</a>
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remains open. An open <a href='#Contour'>Contour</a>, stroked, draws <a href='SkPaint_Reference#Stroke_Cap'>Paint Stroke Cap</a> at
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<a href='#Last_Point'>Last Point</a> and first <a href='SkPoint_Reference#Point'>Point</a>.
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### Example
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<div><fiddle-embed name="7a1f39b12d2cd8b7f5b1190879259cb2"><div><a href='#Path'>Path</a> is drawn stroked, with an open <a href='#Contour'>Contour</a> and a closed <a href='#Contour'>Contour</a>.
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</div></fiddle-embed></div>
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## <a name='Contour_Zero_Length'>Contour Zero Length</a>
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<a href='#Contour'>Contour</a> length is distance traveled from first <a href='SkPoint_Reference#Point'>Point</a> to <a href='#Last_Point'>Last Point</a>,
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plus, if <a href='#Contour'>Contour</a> is closed, distance from <a href='#Last_Point'>Last Point</a> to first <a href='SkPoint_Reference#Point'>Point</a>.
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Even if <a href='#Contour'>Contour</a> length is zero, stroked <a href='undocumented#Line'>Lines</a> are drawn if <a href='SkPaint_Reference#Stroke_Cap'>Paint Stroke Cap</a>
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makes them visible.
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### Example
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<div><fiddle-embed name="62848df605af6258653d9e16b27d8f7f"></fiddle-embed></div>
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# <a name='SkPath'>Class SkPath</a>
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<a href='#Path'>Paths</a> contain geometry. <a href='#Path'>Paths</a> may be empty, or contain one or more <a href='#Verb'>Verbs</a> that
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outline a figure. <a href='#Path'>Path</a> always starts with a move verb to a <a href='undocumented#Cartesian_Coordinate'>Cartesian Coordinate</a>,
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and may be followed by additional verbs that add lines or curves.
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Adding a close verb makes the geometry into a continuous loop, a closed contour.
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<a href='#Path'>Paths</a> may contain any number of contours, each beginning with a move verb.
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<a href='#Path'>Path</a> contours may contain only a move verb, or may also contain lines,
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<a href='#Quad'>Quadratic Beziers</a>, <a href='#Conic'>Conics</a>, and <a href='#Cubic'>Cubic Beziers</a>. <a href='#Path'>Path</a> contours may be open or
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closed.
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When used to draw a filled area, <a href='#Path'>Path</a> describes whether the fill is inside or
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outside the geometry. <a href='#Path'>Path</a> also describes the winding rule used to fill
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overlapping contours.
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Internally, <a href='#Path'>Path</a> lazily computes metrics likes bounds and convexity. Call
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<a href='#SkPath_updateBoundsCache'>SkPath::updateBoundsCache</a> to make <a href='#Path'>Path</a> thread safe.
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## Overview
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<table style='border-collapse: collapse; width: 62.5em'>
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<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
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<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Class'>Class Declarations</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>embedded class members</td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Constant'>Constants</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>enum and enum class, and their const values</td>
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</tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Constructor'>Constructors</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>functions that construct <a href='#SkPath'>SkPath</a></td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Member_Function'>Functions</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>global and class member functions</td>
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</tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Operator'>Operators</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>operator overloading methods</td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Related_Function'>Related Functions</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>similar member functions grouped together</td>
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</tr>
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</table>
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## <a name='Related_Function'>Related Function</a>
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SkPath global, <code>struct</code>, and <code>class</code> related member functions share a topic.
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<table style='border-collapse: collapse; width: 62.5em'>
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<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
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<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Arc'>Arc</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>part of <a href='undocumented#Oval'>Oval</a> or <a href='undocumented#Circle'>Circle</a></td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Build'>Build</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds points and verbs to path</td>
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</tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Conic'>Conic</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>conic section defined by three points and a weight</td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Conic_Weight'>Conic Weight</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>strength of <a href='#Conic'>Conic</a> control <a href='SkPoint_Reference#Point'>Point</a></td>
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</tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Contour'>Contour</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>loop of lines and curves</td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Contour_Zero_Length'>Contour Zero Length</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>consideration when contour has no length</td>
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</tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_Convexity'>Convexity</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>if <a href='#Path'>Path</a> is concave or convex</td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Cubic'>Cubic</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>curve described by third-order polynomial</td>
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</tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_Direction'>Direction</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>contour orientation, clockwise or counterclockwise</td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Fill_Type'>Fill Type</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>fill rule, normal and inverted</td>
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</tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Generation_ID'>Generation ID</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>value reflecting contents change</td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Interpolate'>Interpolate</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>weighted average of <a href='#Path'>Path</a> pair</td>
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</tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Last_Point'>Last Point</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>final <a href='SkPoint_Reference#Point'>Point</a> in <a href='#Contour'>Contour</a></td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Point_Array'>Point Array</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>end points and control points for lines and curves</td>
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</tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Property'>Property</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>metrics and attributes</td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Quad'>Quad</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>curve described by second-order polynomial</td>
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</tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Transform'>Transform</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>modify all points</td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Utility'>Utility</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>rarely called management functions</td>
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</tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_Verb'>Verb</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>line and curve type</td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Verb_Array'>Verb Array</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>line and curve type for points</td>
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</tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#Volatile'>Volatile</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>caching attribute</td>
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</tr>
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</table>
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## <a name='Constant'>Constant</a>
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SkPath related constants are defined by <code>enum</code>, <code>enum class</code>, <code>#define</code>, <code>const</code>, and <code>constexpr</code>.
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<table style='border-collapse: collapse; width: 62.5em'>
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<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
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<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_AddPathMode'>AddPathMode</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>sets <a href='#SkPath_addPath'>addPath</a> options</td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_ArcSize'>ArcSize</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>used by <a href='#SkPath_arcTo'>arcTo</a> variation</td>
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</tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_Convexity'>Convexity</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='#Path'>Path</a> is convex or concave</td>
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</tr>
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<tr>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_Direction'>Direction</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>sets <a href='#Contour'>Contour</a> clockwise or counterclockwise</td>
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</tr>
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<tr style='background-color: #f0f0f0; '>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_FillType'>FillType</a></td>
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<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>sets winding rule and inverse fill</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_SegmentMask'>SegmentMask</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns <a href='#SkPath_Verb'>Verb</a> types in <a href='#Path'>Path</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_Verb'>Verb</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>controls how <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Points</a> are interpreted</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kAppend_AddPathMode'>kAppend AddPathMode</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appended to destination unaltered</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kCCW_Direction'>kCCW Direction</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>contour travels counterclockwise</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kCW_Direction'>kCW Direction</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>contour travels clockwise</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kClose_Verb'>kClose Verb</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>closes <a href='#Contour'>Contour</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kConcave_Convexity'>kConcave Convexity</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>more than one <a href='#Contour'>Contour</a>, or a geometry with indentations</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kConic_SegmentMask'>kConic SegmentMask</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>contains one or more <a href='#Conic'>Conics</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kConic_Verb'>kConic Verb</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds <a href='#Conic'>Conic</a> from <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kConvex_Convexity'>kConvex Convexity</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>one <a href='#Contour'>Contour</a> made of a simple geometry without indentations</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kCubic_SegmentMask'>kCubic SegmentMask</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>contains one or more <a href='#Cubic'>Cubics</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kCubic_Verb'>kCubic Verb</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds <a href='#Cubic'>Cubic</a> from <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kDone_Verb'>kDone Verb</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>terminates <a href='#Path'>Path</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>is enclosed by an odd number of <a href='#Contour'>Contours</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kExtend_AddPathMode'>kExtend AddPathMode</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>add line if prior <a href='#Contour'>Contour</a> is not closed</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kInverseEvenOdd_FillType'>kInverseEvenOdd FillType</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>is enclosed by an even number of <a href='#Contour'>Contours</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kInverseWinding_FillType'>kInverseWinding FillType</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>is enclosed by a zero sum of <a href='#Contour'>Contour</a> <a href='#Direction'>Directions</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kLarge_ArcSize'>kLarge ArcSize</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>larger of <a href='#Arc'>Arc</a> pair</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kLine_SegmentMask'>kLine SegmentMask</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>contains one or more <a href='undocumented#Line'>Lines</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kLine_Verb'>kLine Verb</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds <a href='undocumented#Line'>Line</a> from <a href='#Last_Point'>Last Point</a> to next <a href='SkPoint_Reference#Point'>Point</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kMove_Verb'>kMove Verb</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>starts new <a href='#Contour'>Contour</a> at next <a href='SkPoint_Reference#Point'>Point</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kQuad_SegmentMask'>kQuad SegmentMask</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>contains one or more <a href='#Quad'>Quads</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kQuad_Verb'>kQuad Verb</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds <a href='#Quad'>Quad</a> from <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kSmall_ArcSize'>kSmall ArcSize</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>smaller of <a href='#Arc'>Arc</a> pair</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kUnknown_Convexity'>kUnknown Convexity</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>indicates <a href='#SkPath_Convexity'>Convexity</a> has not been determined</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_kWinding_FillType'>kWinding FillType</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>is enclosed by a non-zero sum of <a href='#Contour'>Contour</a> <a href='#Direction'>Directions</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
## <a name='Class'>Class</a>
|
|
|
|
|
|
SkPath uses C++ classes to declare the public data structures and interfaces.
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_Iter'>Iter</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>data iterator</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_RawIter'>RawIter</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>raw data iterator</td>
|
|
</tr>
|
|
</table>
|
|
|
|
## <a name='Constructor'>Constructor</a>
|
|
|
|
|
|
SkPath can be constructed or initialized by these functions, including C++ class constructors.
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_empty_constructor'>SkPath()</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>constructs with default values</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_copy_const_SkPath'>SkPath(const SkPath& path)</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>makes a shallow copy</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_reset'>reset</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>removes <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Weights</a>; frees memory</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_rewind'>rewind</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>removes <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Weights</a>, keeping memory</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_destructor'>~SkPath()</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>decreases <a href='undocumented#Reference_Count'>Reference Count</a> of owned objects</td>
|
|
</tr>
|
|
</table>
|
|
|
|
## <a name='Operator'>Operator</a>
|
|
|
|
|
|
SkPath operators inline class member functions with arithmetic equivalents.
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_notequal_operator'>operator!=(const SkPath& a, const SkPath& b)</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>compares paths for inequality</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_copy_operator'>operator=(const SkPath& path)</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>makes a shallow copy</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_equal_operator'>operator==(const SkPath& a, const SkPath& b)</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>compares <a href='#Path'>Paths</a> for equality</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_swap'>swap</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>exchanges <a href='#Path'>Path</a> pair</td>
|
|
</tr>
|
|
</table>
|
|
|
|
## <a name='Member_Function'>Member Function</a>
|
|
|
|
|
|
SkPath member functions read and modify the structure properties.
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_ConvertConicToQuads'>ConvertConicToQuads</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>approximates <a href='#Conic'>Conic</a> with <a href='#Quad'>Quad</a> array</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_ConvertToNonInverseFillType'>ConvertToNonInverseFillType</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns <a href='#Fill_Type'>Fill Type</a> representing inside geometry</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_IsCubicDegenerate'>IsCubicDegenerate</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='#Cubic'>Cubic</a> is very small</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_IsInverseFillType'>IsInverseFillType</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='#Fill_Type'>Fill Type</a> represents outside geometry</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_IsLineDegenerate'>IsLineDegenerate</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='undocumented#Line'>Line</a> is very small</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_IsQuadDegenerate'>IsQuadDegenerate</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='#Quad'>Quad</a> is very small</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addArc'>addArc</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds one <a href='#Contour'>Contour</a> containing <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addCircle'>addCircle</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds one <a href='#Contour'>Contour</a> containing <a href='undocumented#Circle'>Circle</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addOval'>addOval</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds one <a href='#Contour'>Contour</a> containing <a href='undocumented#Oval'>Oval</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addPath'>addPath</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds contents of <a href='#Path'>Path</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addPoly'>addPoly</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds one <a href='#Contour'>Contour</a> containing connected lines</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addRRect'>addRRect</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds one <a href='#Contour'>Contour</a> containing <a href='SkRRect_Reference#RRect'>Round Rect</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addRect'>addRect</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds one <a href='#Contour'>Contour</a> containing <a href='SkRect_Reference#Rect'>Rect</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addRoundRect'>addRoundRect</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds one <a href='#Contour'>Contour</a> containing <a href='SkRRect_Reference#RRect'>Round Rect</a> with common corner radii</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_arcTo'>arcTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_close'>close</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>makes last <a href='#Contour'>Contour</a> a loop</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_computeTightBounds'>computeTightBounds</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns extent of geometry</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_conicTo'>conicTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='#Conic'>Conic</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_conservativelyContainsRect'>conservativelyContainsRect</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns true if <a href='SkRect_Reference#Rect'>Rect</a> may be inside</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_contains'>contains</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='SkPoint_Reference#Point'>Point</a> is in fill area</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_countPoints'>countPoints</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns <a href='#Point_Array'>Point Array</a> length</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_countVerbs'>countVerbs</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns <a href='#Verb_Array'>Verb Array</a> length</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_cubicTo'>cubicTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='#Cubic'>Cubic</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_dump_2'>dump</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>sends text representation to stream</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_dumpHex'>dumpHex</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>sends text representation using hexadecimal to standard output</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_getBounds'>getBounds</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns maximum and minimum of <a href='#Point_Array'>Point Array</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_getConvexity'>getConvexity</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns geometry convexity, computing if necessary</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_getConvexityOrUnknown'>getConvexityOrUnknown</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns geometry convexity if known</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_getFillType'>getFillType</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns <a href='#Fill_Type'>Fill Type</a>: winding, even-odd, inverse</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_getGenerationID'>getGenerationID</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns unique ID</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_getLastPt'>getLastPt</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_getPoint'>getPoint</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns entry from <a href='#Point_Array'>Point Array</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_getPoints'>getPoints</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns <a href='#Point_Array'>Point Array</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_getSegmentMasks'>getSegmentMasks</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns types in <a href='#Verb_Array'>Verb Array</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_getVerbs'>getVerbs</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns <a href='#Verb_Array'>Verb Array</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_incReserve'>incReserve</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>reserves space for additional data</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_interpolate'>interpolate</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>interpolates between <a href='#Path'>Path</a> pair</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isConvex'>isConvex</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if geometry is convex</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isEmpty'>isEmpty</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if verb count is zero</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isFinite'>isFinite</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if all <a href='SkPoint_Reference#Point'>Point</a> values are finite</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isInterpolatable'>isInterpolatable</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if pair contains equal counts of <a href='#Verb_Array'>Verb Array</a> and <a href='#Conic_Weight'>Weights</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isInverseFillType'>isInverseFillType</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='#Fill_Type'>Fill Type</a> fills outside geometry</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isLastContourClosed'>isLastContourClosed</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if final <a href='#Contour'>Contour</a> forms a loop</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isLine'>isLine</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if describes <a href='undocumented#Line'>Line</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isNestedFillRects'>isNestedFillRects</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if describes <a href='SkRect_Reference#Rect'>Rect</a> pair, one inside the other</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isOval'>isOval</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if describes <a href='undocumented#Oval'>Oval</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isRRect'>isRRect</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if describes <a href='SkRRect_Reference#RRect'>Round Rect</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isRect'>isRect</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if describes <a href='SkRect_Reference#Rect'>Rect</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isValid'>isValid</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if data is internally consistent</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isVolatile'>isVolatile</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='undocumented#Device'>Device</a> should not cache</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_lineTo'>lineTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='undocumented#Line'>Line</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_moveTo'>moveTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>starts <a href='#Contour'>Contour</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_offset'>offset</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>translates <a href='#Point_Array'>Point Array</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_quadTo'>quadTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='#Quad'>Quad</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_rArcTo'>rArcTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='#Arc'>Arc</a> relative to <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_rConicTo'>rConicTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='#Conic'>Conic</a> relative to <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_rCubicTo'>rCubicTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='#Cubic'>Cubic</a> relative to <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_rLineTo'>rLineTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='undocumented#Line'>Line</a> relative to <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_rMoveTo'>rMoveTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>starts <a href='#Contour'>Contour</a> relative to <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_rQuadTo'>rQuadTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='#Quad'>Quad</a> relative to <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_readFromMemory'>readFromMemory</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>initializes from buffer</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_reset'>reset</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>removes <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Weights</a>; frees memory</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_reverseAddPath'>reverseAddPath</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds contents of <a href='#Path'>Path</a> back to front</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_rewind'>rewind</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>removes <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Weights</a>, keeping memory</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_serialize'>serialize</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>copies data to buffer</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_setConvexity'>setConvexity</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>sets if geometry is convex to avoid future computation</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_setFillType'>setFillType</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>sets <a href='#Fill_Type'>Fill Type</a>: winding, even-odd, inverse</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_setIsVolatile'>setIsVolatile</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>sets if <a href='undocumented#Device'>Device</a> should not cache</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_setLastPt'>setLastPt</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>replaces <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_shrinkToFit'>shrinkToFit</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>removes unused reserved space</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_swap'>swap</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>exchanges <a href='#Path'>Path</a> pair</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_toggleInverseFillType'>toggleInverseFillType</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>toggles <a href='#Fill_Type'>Fill Type</a> between inside and outside geometry</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_transform'>transform</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>applies <a href='SkMatrix_Reference#Matrix'>Matrix</a> to <a href='#Point_Array'>Point Array</a> and <a href='#Conic_Weight'>Weights</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_updateBoundsCache'>updateBoundsCache</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>refreshes result of <a href='#SkPath_getBounds'>getBounds</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_writeToMemory'>writeToMemory</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>copies data to buffer</td>
|
|
</tr>
|
|
</table>
|
|
|
|
## <a name='Verb'>Verb</a>
|
|
|
|
## <a name='SkPath_Verb'>Enum SkPath::Verb</a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
enum <a href='#SkPath_Verb'>Verb</a> {
|
|
<a href='#SkPath_kMove_Verb'>kMove Verb</a>,
|
|
<a href='#SkPath_kLine_Verb'>kLine Verb</a>,
|
|
<a href='#SkPath_kQuad_Verb'>kQuad Verb</a>,
|
|
<a href='#SkPath_kConic_Verb'>kConic Verb</a>,
|
|
<a href='#SkPath_kCubic_Verb'>kCubic Verb</a>,
|
|
<a href='#SkPath_kClose_Verb'>kClose Verb</a>,
|
|
<a href='#SkPath_kDone_Verb'>kDone Verb</a>,
|
|
};
|
|
</pre>
|
|
|
|
<a href='#SkPath_Verb'>Verb</a> instructs <a href='#Path'>Path</a> how to interpret one or more <a href='SkPoint_Reference#Point'>Point</a> and optional <a href='#Conic_Weight'>Conic Weight</a>;
|
|
manage <a href='#Contour'>Contour</a>, and terminate <a href='#Path'>Path</a>.
|
|
|
|
### Constants
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Const</th>
|
|
<th style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>Value</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kMove_Verb'><code>SkPath::kMove_Verb</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>0</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Consecutive <a href='#SkPath_kMove_Verb'>kMove Verb</a> are preserved but all but the last <a href='#SkPath_kMove_Verb'>kMove Verb</a> is
|
|
ignored. <a href='#SkPath_kMove_Verb'>kMove Verb</a> after other <a href='#Verb'>Verbs</a> implicitly closes the previous <a href='#Contour'>Contour</a>
|
|
if <a href='SkPaint_Reference#SkPaint_kFill_Style'>SkPaint::kFill Style</a> is set when drawn; otherwise, stroke is drawn open.
|
|
<a href='#SkPath_kMove_Verb'>kMove Verb</a> as the last <a href='#SkPath_Verb'>Verb</a> is preserved but ignored.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kLine_Verb'><code>SkPath::kLine_Verb</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>1</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
<a href='undocumented#Line'>Line</a> is a straight segment from <a href='SkPoint_Reference#Point'>Point</a> to <a href='SkPoint_Reference#Point'>Point</a>. Consecutive <a href='#SkPath_kLine_Verb'>kLine Verb</a>
|
|
extend <a href='#Contour'>Contour</a>. <a href='#SkPath_kLine_Verb'>kLine Verb</a> at same position as prior <a href='#SkPath_kMove_Verb'>kMove Verb</a> is
|
|
preserved, and draws <a href='SkPoint_Reference#Point'>Point</a> if <a href='SkPaint_Reference#SkPaint_kStroke_Style'>SkPaint::kStroke Style</a> is set, and
|
|
<a href='SkPaint_Reference#SkPaint_Cap'>SkPaint::Cap</a> is <a href='SkPaint_Reference#SkPaint_kSquare_Cap'>SkPaint::kSquare Cap</a> or <a href='SkPaint_Reference#SkPaint_kRound_Cap'>SkPaint::kRound Cap</a>. <a href='#SkPath_kLine_Verb'>kLine Verb</a>
|
|
at same position as prior line or curve <a href='#SkPath_Verb'>Verb</a> is preserved but is ignored.
|
|
</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kQuad_Verb'><code>SkPath::kQuad_Verb</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>2</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Adds <a href='#Quad'>Quad</a> from <a href='#Last_Point'>Last Point</a>, using control <a href='SkPoint_Reference#Point'>Point</a>, and end <a href='SkPoint_Reference#Point'>Point</a>.
|
|
<a href='#Quad'>Quad</a> is a parabolic section within tangents from <a href='#Last_Point'>Last Point</a> to control <a href='SkPoint_Reference#Point'>Point</a>,
|
|
and control <a href='SkPoint_Reference#Point'>Point</a> to end <a href='SkPoint_Reference#Point'>Point</a>.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kConic_Verb'><code>SkPath::kConic_Verb</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>3</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Adds <a href='#Conic'>Conic</a> from <a href='#Last_Point'>Last Point</a>, using control <a href='SkPoint_Reference#Point'>Point</a>, end <a href='SkPoint_Reference#Point'>Point</a>, and <a href='#Conic_Weight'>Conic Weight</a>.
|
|
<a href='#Conic'>Conic</a> is a elliptical, parabolic, or hyperbolic section within tangents
|
|
from <a href='#Last_Point'>Last Point</a> to control <a href='SkPoint_Reference#Point'>Point</a>, and control <a href='SkPoint_Reference#Point'>Point</a> to end <a href='SkPoint_Reference#Point'>Point</a>, constrained
|
|
by <a href='#Conic_Weight'>Conic Weight</a>. <a href='#Conic_Weight'>Conic Weight</a> less than one is elliptical; equal to one is
|
|
parabolic (and identical to <a href='#Quad'>Quad</a>); greater than one hyperbolic.
|
|
</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kCubic_Verb'><code>SkPath::kCubic_Verb</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>4</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Adds <a href='#Cubic'>Cubic</a> from <a href='#Last_Point'>Last Point</a>, using two control <a href='SkPoint_Reference#Point'>Points</a>, and end <a href='SkPoint_Reference#Point'>Point</a>.
|
|
<a href='#Cubic'>Cubic</a> is a third-order <a href='undocumented#Bezier_Curve'>Bezier Curve</a> section within tangents from <a href='#Last_Point'>Last Point</a>
|
|
to first control <a href='SkPoint_Reference#Point'>Point</a>, and from second control <a href='SkPoint_Reference#Point'>Point</a> to end <a href='SkPoint_Reference#Point'>Point</a>.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kClose_Verb'><code>SkPath::kClose_Verb</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>5</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Closes <a href='#Contour'>Contour</a>, connecting <a href='#Last_Point'>Last Point</a> to <a href='#SkPath_kMove_Verb'>kMove Verb</a> <a href='SkPoint_Reference#Point'>Point</a>. Consecutive
|
|
<a href='#SkPath_kClose_Verb'>kClose Verb</a> are preserved but only first has an effect. <a href='#SkPath_kClose_Verb'>kClose Verb</a> after
|
|
<a href='#SkPath_kMove_Verb'>kMove Verb</a> has no effect.
|
|
</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kDone_Verb'><code>SkPath::kDone_Verb</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>6</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Not in <a href='#Verb_Array'>Verb Array</a>, but returned by <a href='#Path'>Path</a> iterator.
|
|
</td>
|
|
</tr>
|
|
Each <a href='#SkPath_Verb'>Verb</a> has zero or more <a href='SkPoint_Reference#Point'>Points</a> stored in <a href='#Path'>Path</a>.
|
|
<a href='#Path'>Path</a> iterator returns complete curve descriptions, duplicating shared <a href='SkPoint_Reference#Point'>Points</a>
|
|
for consecutive entries.
|
|
|
|
</table>
|
|
|
|
| <a href='#SkPath_Verb'>Verb</a> | Allocated <a href='SkPoint_Reference#Point'>Points</a> | Iterated <a href='SkPoint_Reference#Point'>Points</a> | <a href='#Conic_Weight'>Weights</a> |
|
|
| --- | --- | --- | --- |
|
|
| <a href='#SkPath_kMove_Verb'>kMove Verb</a> | 1 | 1 | 0 |
|
|
| <a href='#SkPath_kLine_Verb'>kLine Verb</a> | 1 | 2 | 0 |
|
|
| <a href='#SkPath_kQuad_Verb'>kQuad Verb</a> | 2 | 3 | 0 |
|
|
| <a href='#SkPath_kConic_Verb'>kConic Verb</a> | 2 | 3 | 1 |
|
|
| <a href='#SkPath_kCubic_Verb'>kCubic Verb</a> | 3 | 4 | 0 |
|
|
| <a href='#SkPath_kClose_Verb'>kClose Verb</a> | 0 | 1 | 0 |
|
|
| <a href='#SkPath_kDone_Verb'>kDone Verb</a> | -- | 0 | 0 |
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="799096fdc1298aa815934a74e76570ca">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
verb count: 7
|
|
verbs: kMove_Verb kLine_Verb kQuad_Verb kClose_Verb kMove_Verb kCubic_Verb kConic_Verb
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
## <a name='Direction'>Direction</a>
|
|
|
|
## <a name='SkPath_Direction'>Enum SkPath::Direction</a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
enum <a href='#SkPath_Direction'>Direction</a> {
|
|
<a href='#SkPath_kCW_Direction'>kCW Direction</a>,
|
|
<a href='#SkPath_kCCW_Direction'>kCCW Direction</a>,
|
|
};
|
|
</pre>
|
|
|
|
<a href='#SkPath_Direction'>Direction</a> describes whether <a href='#Contour'>Contour</a> is clockwise or counterclockwise.
|
|
When <a href='#Path'>Path</a> contains multiple overlapping <a href='#Contour'>Contours</a>, <a href='#SkPath_Direction'>Direction</a> together with
|
|
<a href='#Fill_Type'>Fill Type</a> determines whether overlaps are filled or form holes.
|
|
|
|
<a href='#SkPath_Direction'>Direction</a> also determines how <a href='#Contour'>Contour</a> is measured. For instance, dashing
|
|
measures along <a href='#Path'>Path</a> to determine where to start and stop stroke; <a href='#SkPath_Direction'>Direction</a>
|
|
will change dashed results as it steps clockwise or counterclockwise.
|
|
|
|
Closed <a href='#Contour'>Contours</a> like <a href='SkRect_Reference#Rect'>Rect</a>, <a href='SkRRect_Reference#RRect'>Round Rect</a>, <a href='undocumented#Circle'>Circle</a>, and <a href='undocumented#Oval'>Oval</a> added with
|
|
<a href='#SkPath_kCW_Direction'>kCW Direction</a> travel clockwise; the same added with <a href='#SkPath_kCCW_Direction'>kCCW Direction</a>
|
|
travel counterclockwise.
|
|
|
|
### Constants
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Const</th>
|
|
<th style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>Value</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kCW_Direction'><code>SkPath::kCW_Direction</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>0</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
contour travels clockwise</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kCCW_Direction'><code>SkPath::kCCW_Direction</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>1</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
contour travels counterclockwise</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="0de03d9c939b6238318b7366866e8722"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_arcTo'>arcTo</a><sup><a href='#SkPath_arcTo_2'>[2]</a></sup><sup><a href='#SkPath_arcTo_3'>[3]</a></sup><sup><a href='#SkPath_arcTo_4'>[4]</a></sup><sup><a href='#SkPath_arcTo_5'>[5]</a></sup> <a href='#SkPath_rArcTo'>rArcTo</a> <a href='#SkPath_isRect'>isRect</a> <a href='#SkPath_isNestedFillRects'>isNestedFillRects</a> <a href='#SkPath_addRect'>addRect</a><sup><a href='#SkPath_addRect_2'>[2]</a></sup><sup><a href='#SkPath_addRect_3'>[3]</a></sup> <a href='#SkPath_addOval'>addOval</a><sup><a href='#SkPath_addOval_2'>[2]</a></sup>
|
|
|
|
<a name='SkPath_empty_constructor'></a>
|
|
## SkPath
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>()
|
|
</pre>
|
|
|
|
Constucts an empty <a href='#Path'>Path</a>. By default, <a href='#Path'>Path</a> has no <a href='#Verb'>Verbs</a>, no <a href='SkPoint_Reference#Point'>Points</a>, and no <a href='#Conic_Weight'>Weights</a>.
|
|
<a href='#Fill_Type'>Fill Type</a> is set to <a href='#SkPath_kWinding_FillType'>kWinding FillType</a>.
|
|
|
|
### Return Value
|
|
|
|
empty <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="0a0026fca638d1cd75c0ab884e3ee1c6">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
path is empty
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_reset'>reset</a> <a href='#SkPath_rewind'>rewind</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_copy_const_SkPath'></a>
|
|
## SkPath
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>(const <a href='#SkPath'>SkPath</a>& path)
|
|
</pre>
|
|
|
|
Constructs a copy of an existing <a href='#SkPath_copy_const_SkPath_path'>path</a>.
|
|
Copy constructor makes two paths identical by value. Internally, <a href='#SkPath_copy_const_SkPath_path'>path</a> and
|
|
the returned result share pointer values. The underlying <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>
|
|
and <a href='#Conic_Weight'>Weights</a> are copied when modified.
|
|
|
|
Creating a <a href='#Path'>Path</a> copy is very efficient and never allocates memory.
|
|
<a href='#Path'>Paths</a> are always copied by value from the interface; the underlying shared
|
|
pointers are not exposed.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_copy_const_SkPath_path'><code><strong>path</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> to copy by value</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
copy of <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="647312aacd946c8a6eabaca797140432"><div>Modifying one <a href='#SkPath_copy_const_SkPath_path'>path</a> does not effect another, even if they started as copies
|
|
of each other.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
path verbs: 2
|
|
path2 verbs: 3
|
|
after reset
|
|
path verbs: 0
|
|
path2 verbs: 3
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_copy_operator'>operator=(const SkPath& path)</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_destructor'></a>
|
|
## ~SkPath
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath_destructor'>~SkPath</a>()
|
|
</pre>
|
|
|
|
Releases ownership of any shared data and deletes data if <a href='#Path'>Path</a> is sole owner.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="01ad6be9b7d15a2217daea273eb3d466"><div>delete calls <a href='#Path'>Path</a> <a href='undocumented#Destructor'>Destructor</a>, but copy of original in path2 is unaffected.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_empty_constructor'>SkPath()</a> <a href='#SkPath_copy_const_SkPath'>SkPath(const SkPath& path)</a> <a href='#SkPath_copy_operator'>operator=(const SkPath& path)</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_copy_operator'></a>
|
|
## operator=
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_copy_operator'>operator=(const SkPath& path)</a>
|
|
</pre>
|
|
|
|
Constructs a copy of an existing <a href='#SkPath_copy_operator_path'>path</a>.
|
|
<a href='#Path'>Path</a> assignment makes two paths identical by value. Internally, assignment
|
|
shares pointer values. The underlying <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a> and <a href='#Conic_Weight'>Weights</a>
|
|
are copied when modified.
|
|
|
|
Copying <a href='#Path'>Paths</a> by assignment is very efficient and never allocates memory.
|
|
<a href='#Path'>Paths</a> are always copied by value from the interface; the underlying shared
|
|
pointers are not exposed.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_copy_operator_path'><code><strong>path</strong></code></a></td>
|
|
<td><a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, <a href='#Conic_Weight'>Weights</a>, and <a href='#Fill_Type'>Fill Type</a> to copy</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
<a href='#Path'>Path</a> copied by value
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="bba288f5f77fc8e37e89d2ec08e0ac60">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
path1 bounds = 10, 20, 30, 40
|
|
path2 bounds = 10, 20, 30, 40
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_swap'>swap</a> <a href='#SkPath_copy_const_SkPath'>SkPath(const SkPath& path)</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_equal_operator'></a>
|
|
## operator==
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_equal_operator'>operator==(const SkPath& a, const SkPath& b)</a>
|
|
</pre>
|
|
|
|
Compares <a href='#SkPath_equal_operator_a'>a</a> and <a href='#SkPath_equal_operator_b'>b</a>; returns true if <a href='#Fill_Type'>Fill Type</a>, <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Weights</a>
|
|
are equivalent.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_equal_operator_a'><code><strong>a</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> to compare</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_equal_operator_b'><code><strong>b</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> to compare</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Path'>Path</a> pair are equivalent
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="31883f51bb357f2ac5990d88f8b82e02"><div>Rewind removes <a href='#Verb_Array'>Verb Array</a> but leaves storage; since storage is not compared,
|
|
<a href='#Path'>Path</a> pair are equivalent.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
empty one == two
|
|
moveTo one != two
|
|
rewind one == two
|
|
reset one == two
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_notequal_operator'>operator!=(const SkPath& a, const SkPath& b)</a> <a href='#SkPath_copy_operator'>operator=(const SkPath& path)</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_notequal_operator'></a>
|
|
## operator!=
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_notequal_operator'>operator!=(const SkPath& a, const SkPath& b)</a>
|
|
</pre>
|
|
|
|
Compares <a href='#SkPath_notequal_operator_a'>a</a> and <a href='#SkPath_notequal_operator_b'>b</a>; returns true if <a href='#Fill_Type'>Fill Type</a>, <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Weights</a>
|
|
are not equivalent.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_notequal_operator_a'><code><strong>a</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> to compare</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_notequal_operator_b'><code><strong>b</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> to compare</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Path'>Path</a> pair are not equivalent
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="bbbda1cc818d96c9c0d2a06c0c48902b"><div><a href='#Path'>Path</a> pair are equal though their convexity is not equal.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
empty one == two
|
|
add rect one == two
|
|
setConvexity one == two
|
|
convexity !=
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
---
|
|
|
|
## <a name='Property'>Property</a>
|
|
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_IsCubicDegenerate'>IsCubicDegenerate</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='#Cubic'>Cubic</a> is very small</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_IsInverseFillType'>IsInverseFillType</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='#Fill_Type'>Fill Type</a> represents outside geometry</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_IsLineDegenerate'>IsLineDegenerate</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='undocumented#Line'>Line</a> is very small</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_IsQuadDegenerate'>IsQuadDegenerate</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='#Quad'>Quad</a> is very small</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_computeTightBounds'>computeTightBounds</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns extent of geometry</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_conservativelyContainsRect'>conservativelyContainsRect</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns true if <a href='SkRect_Reference#Rect'>Rect</a> may be inside</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_contains'>contains</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='SkPoint_Reference#Point'>Point</a> is in fill area</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_getBounds'>getBounds</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns maximum and minimum of <a href='#Point_Array'>Point Array</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_getLastPt'>getLastPt</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isEmpty'>isEmpty</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if verb count is zero</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isFinite'>isFinite</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if all <a href='SkPoint_Reference#Point'>Point</a> values are finite</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isInterpolatable'>isInterpolatable</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if pair contains equal counts of <a href='#Verb_Array'>Verb Array</a> and <a href='#Conic_Weight'>Weights</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isLastContourClosed'>isLastContourClosed</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if final <a href='#Contour'>Contour</a> forms a loop</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isLine'>isLine</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if describes <a href='undocumented#Line'>Line</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isNestedFillRects'>isNestedFillRects</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if describes <a href='SkRect_Reference#Rect'>Rect</a> pair, one inside the other</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isOval'>isOval</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if describes <a href='undocumented#Oval'>Oval</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isRRect'>isRRect</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if describes <a href='SkRRect_Reference#RRect'>Round Rect</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isRect'>isRect</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if describes <a href='SkRect_Reference#Rect'>Rect</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isValid'>isValid</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if data is internally consistent</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_isVolatile'>isVolatile</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='undocumented#Device'>Device</a> should not cache</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<a name='SkPath_isInterpolatable'></a>
|
|
## isInterpolatable
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_isInterpolatable'>isInterpolatable</a>(const <a href='#SkPath'>SkPath</a>& compare) const
|
|
</pre>
|
|
|
|
Returns true if <a href='#Path'>Paths</a> contain equal <a href='#Verb'>Verbs</a> and equal <a href='#Conic_Weight'>Weights</a>.
|
|
If <a href='#Path'>Paths</a> contain one or more <a href='#Conic'>Conics</a>, the <a href='#Conic_Weight'>Weights</a> must match.
|
|
|
|
<a href='#SkPath_conicTo'>conicTo</a> may add different <a href='#Verb'>Verbs</a> depending on <a href='#Conic_Weight'>Conic Weight</a>, so it is not
|
|
trivial to interpolate a pair of <a href='#Path'>Paths</a> containing <a href='#Conic'>Conics</a> with different
|
|
<a href='#Conic_Weight'>Conic Weight</a> values.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_isInterpolatable_compare'><code><strong>compare</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> to <a href='#SkPath_isInterpolatable_compare'>compare</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Path'>Paths</a> <a href='#Verb_Array'>Verb Array</a> and <a href='#Conic_Weight'>Weights</a> are equivalent
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="c81fc7dfaf785c3fb77209c7f2ebe5b8">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
paths are interpolatable
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_isInterpolatable'>isInterpolatable</a>
|
|
|
|
---
|
|
|
|
## <a name='Interpolate'>Interpolate</a>
|
|
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_interpolate'>interpolate</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>interpolates between <a href='#Path'>Path</a> pair</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<a name='SkPath_interpolate'></a>
|
|
## interpolate
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_interpolate'>interpolate</a>(const <a href='#SkPath'>SkPath</a>& ending, <a href='undocumented#SkScalar'>SkScalar</a> weight, <a href='#SkPath'>SkPath</a>* out) const
|
|
</pre>
|
|
|
|
Interpolates between <a href='#Path'>Paths</a> with <a href='#Point_Array'>Point Array</a> of equal size.
|
|
Copy <a href='#Verb_Array'>Verb Array</a> and <a href='#Conic_Weight'>Weights</a> to <a href='#SkPath_interpolate_out'>out</a>, and set <a href='#SkPath_interpolate_out'>out</a> <a href='#Point_Array'>Point Array</a> to a weighted
|
|
average of this <a href='#Point_Array'>Point Array</a> and <a href='#SkPath_interpolate_ending'>ending</a> <a href='#Point_Array'>Point Array</a>, using the formula:
|
|
(<a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> * <a href='#SkPath_interpolate_weight'>weight</a>) + <a href='#SkPath_interpolate_ending'>ending</a> <a href='SkPoint_Reference#Point'>Point</a> * (1 - <a href='#SkPath_interpolate_weight'>weight</a>)
|
|
.
|
|
|
|
<a href='#SkPath_interpolate_weight'>weight</a> is most useful when between zero (<a href='#SkPath_interpolate_ending'>ending</a> <a href='#Point_Array'>Point Array</a>) and
|
|
one (this <a href='#Point_Array'>Point Array</a>); will work with values outside of this
|
|
range.
|
|
|
|
<a href='#SkPath_interpolate'>interpolate</a> returns false and leaves <a href='#SkPath_interpolate_out'>out</a> unchanged if <a href='#Point_Array'>Point Array</a> is not
|
|
the same size as <a href='#SkPath_interpolate_ending'>ending</a> <a href='#Point_Array'>Point Array</a>. Call <a href='#SkPath_isInterpolatable'>isInterpolatable</a> to check <a href='#Path'>Path</a>
|
|
compatibility prior to calling <a href='#SkPath_interpolate'>interpolate</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_interpolate_ending'><code><strong>ending</strong></code></a></td>
|
|
<td><a href='#Point_Array'>Point Array</a> averaged with this <a href='#Point_Array'>Point Array</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_interpolate_weight'><code><strong>weight</strong></code></a></td>
|
|
<td>contribution of this <a href='#Point_Array'>Point Array</a>, and
|
|
one minus contribution of <a href='#SkPath_interpolate_ending'>ending</a> <a href='#Point_Array'>Point Array</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_interpolate_out'><code><strong>out</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> replaced by interpolated averages</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Path'>Paths</a> contain same number of <a href='SkPoint_Reference#Point'>Points</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="404f11c5c9c9ca8a64822d484552a473"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_isInterpolatable'>isInterpolatable</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_unique'></a>
|
|
## unique
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_unique'>unique</a>() const
|
|
</pre>
|
|
|
|
To be deprecated soon.
|
|
|
|
Only valid for Android framework.
|
|
|
|
---
|
|
|
|
## <a name='Fill_Type'>Fill Type</a>
|
|
|
|
## <a name='SkPath_FillType'>Enum SkPath::FillType</a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
enum <a href='#SkPath_FillType'>FillType</a> {
|
|
<a href='#SkPath_kWinding_FillType'>kWinding FillType</a>,
|
|
<a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a>,
|
|
<a href='#SkPath_kInverseWinding_FillType'>kInverseWinding FillType</a>,
|
|
<a href='#SkPath_kInverseEvenOdd_FillType'>kInverseEvenOdd FillType</a>,
|
|
};
|
|
</pre>
|
|
|
|
<a href='#Fill_Type'>Fill Type</a> selects the rule used to fill <a href='#Path'>Path</a>. <a href='#Path'>Path</a> set to <a href='#SkPath_kWinding_FillType'>kWinding FillType</a>
|
|
fills if the sum of <a href='#Contour'>Contour</a> edges is not zero, where clockwise edges add one, and
|
|
counterclockwise edges subtract one. <a href='#Path'>Path</a> set to <a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a> fills if the
|
|
number of <a href='#Contour'>Contour</a> edges is odd. Each <a href='#Fill_Type'>Fill Type</a> has an inverse variant that
|
|
reverses the rule:
|
|
<a href='#SkPath_kInverseWinding_FillType'>kInverseWinding FillType</a> fills where the sum of <a href='#Contour'>Contour</a> edges is zero;
|
|
<a href='#SkPath_kInverseEvenOdd_FillType'>kInverseEvenOdd FillType</a> fills where the number of <a href='#Contour'>Contour</a> edges is even.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="71fc6c069c377d808799f2453edabaf5"><div>The top row has two clockwise rectangles. The second row has one clockwise and
|
|
one counterclockwise rectangle. The even-odd variants draw the same. The
|
|
winding variants draw the top rectangle overlap, which has a winding of 2, the
|
|
same as the outer parts of the top rectangles, which have a winding of 1.
|
|
</div></fiddle-embed></div>
|
|
|
|
### Constants
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Const</th>
|
|
<th style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>Value</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kWinding_FillType'><code>SkPath::kWinding_FillType</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>0</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
is enclosed by a non-zero sum of Contour Directions</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kEvenOdd_FillType'><code>SkPath::kEvenOdd_FillType</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>1</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
is enclosed by an odd number of Contours</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kInverseWinding_FillType'><code>SkPath::kInverseWinding_FillType</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>2</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
is enclosed by a zero sum of Contour Directions</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kInverseEvenOdd_FillType'><code>SkPath::kInverseEvenOdd_FillType</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>3</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
is enclosed by an even number of Contours</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="d84cd32b0bfd9ad2714f753120ed0ee1"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkPaint_Reference#SkPaint_Style'>SkPaint::Style</a> <a href='#SkPath_Direction'>Direction</a> <a href='#SkPath_getFillType'>getFillType</a> <a href='#SkPath_setFillType'>setFillType</a>
|
|
|
|
<a name='SkPath_getFillType'></a>
|
|
## getFillType
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath_FillType'>FillType</a> <a href='#SkPath_getFillType'>getFillType</a>() const
|
|
</pre>
|
|
|
|
Returns <a href='#SkPath_FillType'>FillType</a>, the rule used to fill <a href='#Path'>Path</a>. <a href='#SkPath_FillType'>FillType</a> of a new <a href='#Path'>Path</a> is
|
|
<a href='#SkPath_kWinding_FillType'>kWinding FillType</a>.
|
|
|
|
### Return Value
|
|
|
|
one of: <a href='#SkPath_kWinding_FillType'>kWinding FillType</a>, <a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a>, <a href='#SkPath_kInverseWinding_FillType'>kInverseWinding FillType</a>,
|
|
<a href='#SkPath_kInverseEvenOdd_FillType'>kInverseEvenOdd FillType</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="019af90e778914e8a109d6305ede4fc4">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
default path fill type is kWinding_FillType
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_FillType'>FillType</a> <a href='#SkPath_setFillType'>setFillType</a> <a href='#SkPath_isInverseFillType'>isInverseFillType</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_setFillType'></a>
|
|
## setFillType
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_setFillType'>setFillType</a>(<a href='#SkPath_FillType'>FillType</a> ft)
|
|
</pre>
|
|
|
|
Sets <a href='#SkPath_FillType'>FillType</a>, the rule used to fill <a href='#Path'>Path</a>. While there is no check
|
|
that <a href='#SkPath_setFillType_ft'>ft</a> is legal, values outside of <a href='#SkPath_FillType'>FillType</a> are not supported.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_setFillType_ft'><code><strong>ft</strong></code></a></td>
|
|
<td>one of: <a href='#SkPath_kWinding_FillType'>kWinding FillType</a>, <a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a>, <a href='#SkPath_kInverseWinding_FillType'>kInverseWinding FillType</a>,
|
|
<a href='#SkPath_kInverseEvenOdd_FillType'>kInverseEvenOdd FillType</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="b4a91cd7f50b2a0a0d1bec6d0ac823d2"><div>If empty <a href='#Path'>Path</a> is set to inverse <a href='#SkPath_FillType'>FillType</a>, it fills all pixels.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_FillType'>FillType</a> <a href='#SkPath_getFillType'>getFillType</a> <a href='#SkPath_toggleInverseFillType'>toggleInverseFillType</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_isInverseFillType'></a>
|
|
## isInverseFillType
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_isInverseFillType'>isInverseFillType</a>() const
|
|
</pre>
|
|
|
|
Returns if <a href='#SkPath_FillType'>FillType</a> describes area outside <a href='#Path'>Path</a> geometry. The inverse fill area
|
|
extends indefinitely.
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#SkPath_FillType'>FillType</a> is <a href='#SkPath_kInverseWinding_FillType'>kInverseWinding FillType</a> or <a href='#SkPath_kInverseEvenOdd_FillType'>kInverseEvenOdd FillType</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="2a2d39f5da611545caa18bbcea873ab2">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
default path fill type is inverse: false
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_FillType'>FillType</a> <a href='#SkPath_getFillType'>getFillType</a> <a href='#SkPath_setFillType'>setFillType</a> <a href='#SkPath_toggleInverseFillType'>toggleInverseFillType</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_toggleInverseFillType'></a>
|
|
## toggleInverseFillType
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_toggleInverseFillType'>toggleInverseFillType</a>()
|
|
</pre>
|
|
|
|
Replaces <a href='#SkPath_FillType'>FillType</a> with its inverse. The inverse of <a href='#SkPath_FillType'>FillType</a> describes the area
|
|
unmodified by the original <a href='#SkPath_FillType'>FillType</a>.
|
|
|
|
| <a href='#SkPath_FillType'>FillType</a> | toggled <a href='#SkPath_FillType'>FillType</a> |
|
|
| --- | --- |
|
|
| <a href='#SkPath_kWinding_FillType'>kWinding FillType</a> | <a href='#SkPath_kInverseWinding_FillType'>kInverseWinding FillType</a> |
|
|
| <a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a> | <a href='#SkPath_kInverseEvenOdd_FillType'>kInverseEvenOdd FillType</a> |
|
|
| <a href='#SkPath_kInverseWinding_FillType'>kInverseWinding FillType</a> | <a href='#SkPath_kWinding_FillType'>kWinding FillType</a> |
|
|
| <a href='#SkPath_kInverseEvenOdd_FillType'>kInverseEvenOdd FillType</a> | <a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a> |
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="400facce23d417bc5043c5f58404afbd"><div><a href='#Path'>Path</a> drawn normally and through its inverse touches every pixel once.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_FillType'>FillType</a> <a href='#SkPath_getFillType'>getFillType</a> <a href='#SkPath_setFillType'>setFillType</a> <a href='#SkPath_isInverseFillType'>isInverseFillType</a>
|
|
|
|
---
|
|
|
|
## <a name='Convexity'>Convexity</a>
|
|
|
|
## <a name='SkPath_Convexity'>Enum SkPath::Convexity</a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
enum <a href='#SkPath_Convexity'>Convexity</a> : uint8_t {
|
|
<a href='#SkPath_kUnknown_Convexity'>kUnknown Convexity</a>,
|
|
<a href='#SkPath_kConvex_Convexity'>kConvex Convexity</a>,
|
|
<a href='#SkPath_kConcave_Convexity'>kConcave Convexity</a>,
|
|
};
|
|
</pre>
|
|
|
|
<a href='#Path'>Path</a> is convex if it contains one <a href='#Contour'>Contour</a> and <a href='#Contour'>Contour</a> loops no more than
|
|
360 degrees, and <a href='#Contour'>Contour</a> angles all have same <a href='#SkPath_Direction'>Direction</a>. Convex <a href='#Path'>Path</a>
|
|
may have better performance and require fewer resources on <a href='undocumented#GPU_Surface'>GPU Surface</a>.
|
|
|
|
<a href='#Path'>Path</a> is concave when either at least one <a href='#SkPath_Direction'>Direction</a> change is clockwise and
|
|
another is counterclockwise, or the sum of the changes in <a href='#SkPath_Direction'>Direction</a> is not 360
|
|
degrees.
|
|
|
|
Initially <a href='#Path'>Path</a> <a href='#SkPath_Convexity'>Convexity</a> is <a href='#SkPath_kUnknown_Convexity'>kUnknown Convexity</a>. <a href='#Path'>Path</a> <a href='#SkPath_Convexity'>Convexity</a> is computed
|
|
if needed by destination <a href='SkSurface_Reference#Surface'>Surface</a>.
|
|
|
|
### Constants
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Const</th>
|
|
<th style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>Value</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kUnknown_Convexity'><code>SkPath::kUnknown_Convexity</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>0</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
indicates Convexity has not been determined</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kConvex_Convexity'><code>SkPath::kConvex_Convexity</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>1</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
one Contour made of a simple geometry without indentations</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kConcave_Convexity'><code>SkPath::kConcave_Convexity</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>2</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
more than one Contour, or a geometry with indentations</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="ac49e8b810bd6ed5d84b4f5a3b40a0ec"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Contour'>Contour</a> <a href='#SkPath_Direction'>Direction</a> <a href='#SkPath_getConvexity'>getConvexity</a> <a href='#SkPath_getConvexityOrUnknown'>getConvexityOrUnknown</a> <a href='#SkPath_setConvexity'>setConvexity</a> <a href='#SkPath_isConvex'>isConvex</a>
|
|
|
|
<a name='SkPath_getConvexity'></a>
|
|
## getConvexity
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath_Convexity'>Convexity</a> <a href='#SkPath_getConvexity'>getConvexity</a>() const
|
|
</pre>
|
|
|
|
Computes <a href='#SkPath_Convexity'>Convexity</a> if required, and returns stored value.
|
|
<a href='#SkPath_Convexity'>Convexity</a> is computed if stored value is <a href='#SkPath_kUnknown_Convexity'>kUnknown Convexity</a>,
|
|
or if <a href='#Path'>Path</a> has been altered since <a href='#SkPath_Convexity'>Convexity</a> was computed or set.
|
|
|
|
### Return Value
|
|
|
|
computed or stored <a href='#SkPath_Convexity'>Convexity</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="a8f36f2fa90003e3691fd0da0bb0c243"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_Convexity'>Convexity</a> <a href='#Contour'>Contour</a> <a href='#SkPath_Direction'>Direction</a> <a href='#SkPath_getConvexityOrUnknown'>getConvexityOrUnknown</a> <a href='#SkPath_setConvexity'>setConvexity</a> <a href='#SkPath_isConvex'>isConvex</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_getConvexityOrUnknown'></a>
|
|
## getConvexityOrUnknown
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath_Convexity'>Convexity</a> <a href='#SkPath_getConvexityOrUnknown'>getConvexityOrUnknown</a>() const
|
|
</pre>
|
|
|
|
Returns last computed <a href='#SkPath_Convexity'>Convexity</a>, or <a href='#SkPath_kUnknown_Convexity'>kUnknown Convexity</a> if
|
|
<a href='#Path'>Path</a> has been altered since <a href='#SkPath_Convexity'>Convexity</a> was computed or set.
|
|
|
|
### Return Value
|
|
|
|
stored <a href='#SkPath_Convexity'>Convexity</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="111c59e9afadb940ab8f41bdc25378a4"><div><a href='#SkPath_Convexity'>Convexity</a> is unknown unless <a href='#SkPath_getConvexity'>getConvexity</a> is called without a subsequent call
|
|
that alters the path.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_Convexity'>Convexity</a> <a href='#Contour'>Contour</a> <a href='#SkPath_Direction'>Direction</a> <a href='#SkPath_getConvexity'>getConvexity</a> <a href='#SkPath_setConvexity'>setConvexity</a> <a href='#SkPath_isConvex'>isConvex</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_setConvexity'></a>
|
|
## setConvexity
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_setConvexity'>setConvexity</a>(<a href='#SkPath_Convexity'>Convexity</a> convexity)
|
|
</pre>
|
|
|
|
Stores <a href='#SkPath_setConvexity_convexity'>convexity</a> so that it is later returned by <a href='#SkPath_getConvexity'>getConvexity</a> or <a href='#SkPath_getConvexityOrUnknown'>getConvexityOrUnknown</a>.
|
|
<a href='#SkPath_setConvexity_convexity'>convexity</a> may differ from <a href='#SkPath_getConvexity'>getConvexity</a>, although setting an incorrect value may
|
|
cause incorrect or inefficient drawing.
|
|
|
|
If <a href='#SkPath_setConvexity_convexity'>convexity</a> is <a href='#SkPath_kUnknown_Convexity'>kUnknown Convexity</a>: <a href='#SkPath_getConvexity'>getConvexity</a> will
|
|
compute <a href='#SkPath_Convexity'>Convexity</a>, and <a href='#SkPath_getConvexityOrUnknown'>getConvexityOrUnknown</a> will return <a href='#SkPath_kUnknown_Convexity'>kUnknown Convexity</a>.
|
|
|
|
If <a href='#SkPath_setConvexity_convexity'>convexity</a> is <a href='#SkPath_kConvex_Convexity'>kConvex Convexity</a> or <a href='#SkPath_kConcave_Convexity'>kConcave Convexity</a>, <a href='#SkPath_getConvexity'>getConvexity</a>
|
|
and <a href='#SkPath_getConvexityOrUnknown'>getConvexityOrUnknown</a> will return <a href='#SkPath_setConvexity_convexity'>convexity</a> until the path is
|
|
altered.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_setConvexity_convexity'><code><strong>convexity</strong></code></a></td>
|
|
<td>one of: <a href='#SkPath_kUnknown_Convexity'>kUnknown Convexity</a>, <a href='#SkPath_kConvex_Convexity'>kConvex Convexity</a>, or <a href='#SkPath_kConcave_Convexity'>kConcave Convexity</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="875e32b4b1cb48d739325705fc0fa42c"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_Convexity'>Convexity</a> <a href='#Contour'>Contour</a> <a href='#SkPath_Direction'>Direction</a> <a href='#SkPath_getConvexity'>getConvexity</a> <a href='#SkPath_getConvexityOrUnknown'>getConvexityOrUnknown</a> <a href='#SkPath_isConvex'>isConvex</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_isConvex'></a>
|
|
## isConvex
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_isConvex'>isConvex</a>() const
|
|
</pre>
|
|
|
|
Computes <a href='#SkPath_Convexity'>Convexity</a> if required, and returns true if value is <a href='#SkPath_kConvex_Convexity'>kConvex Convexity</a>.
|
|
If <a href='#SkPath_setConvexity'>setConvexity</a> was called with <a href='#SkPath_kConvex_Convexity'>kConvex Convexity</a> or <a href='#SkPath_kConcave_Convexity'>kConcave Convexity</a>, and
|
|
the path has not been altered, <a href='#SkPath_Convexity'>Convexity</a> is not recomputed.
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#SkPath_Convexity'>Convexity</a> stored or computed is <a href='#SkPath_kConvex_Convexity'>kConvex Convexity</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="d8be8b6e59de244e4cbf58ec9554557b"><div>Concave shape is erroneously considered convex after a forced call to
|
|
<a href='#SkPath_setConvexity'>setConvexity</a>.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_Convexity'>Convexity</a> <a href='#Contour'>Contour</a> <a href='#SkPath_Direction'>Direction</a> <a href='#SkPath_getConvexity'>getConvexity</a> <a href='#SkPath_getConvexityOrUnknown'>getConvexityOrUnknown</a> <a href='#SkPath_setConvexity'>setConvexity</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_isOval'></a>
|
|
## isOval
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_isOval'>isOval</a>(<a href='SkRect_Reference#SkRect'>SkRect</a>* bounds) const
|
|
</pre>
|
|
|
|
Returns true if this path is recognized as an oval or circle.
|
|
|
|
<a href='#SkPath_isOval_bounds'>bounds</a> receives <a href='#SkPath_isOval_bounds'>bounds</a> of <a href='undocumented#Oval'>Oval</a>.
|
|
|
|
<a href='#SkPath_isOval_bounds'>bounds</a> is unmodified if <a href='undocumented#Oval'>Oval</a> is not found.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_isOval_bounds'><code><strong>bounds</strong></code></a></td>
|
|
<td>storage for bounding <a href='SkRect_Reference#Rect'>Rect</a> of <a href='undocumented#Oval'>Oval</a>; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Path'>Path</a> is recognized as an oval or circle
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="a51256952b183ee0f7004f2c87cbbf5b"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='undocumented#Oval'>Oval</a> <a href='#SkPath_addCircle'>addCircle</a> <a href='#SkPath_addOval'>addOval</a><sup><a href='#SkPath_addOval_2'>[2]</a></sup>
|
|
|
|
---
|
|
|
|
<a name='SkPath_isRRect'></a>
|
|
## isRRect
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_isRRect'>isRRect</a>(<a href='SkRRect_Reference#SkRRect'>SkRRect</a>* rrect) const
|
|
</pre>
|
|
|
|
Returns true if this path is recognized as a <a href='SkRRect_Reference#SkRRect'>SkRRect</a> (but not an oval/circle or rect).
|
|
|
|
<a href='#SkPath_isRRect_rrect'>rrect</a> receives bounds of <a href='SkRRect_Reference#RRect'>Round Rect</a>.
|
|
|
|
<a href='#SkPath_isRRect_rrect'>rrect</a> is unmodified if <a href='SkRRect_Reference#RRect'>Round Rect</a> is not found.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_isRRect_rrect'><code><strong>rrect</strong></code></a></td>
|
|
<td>storage for bounding <a href='SkRect_Reference#Rect'>Rect</a> of <a href='SkRRect_Reference#RRect'>Round Rect</a>; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Path'>Path</a> contains only <a href='SkRRect_Reference#RRect'>Round Rect</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="2aa939b90d96aff436b145a96305132c"><div>Draw rounded rectangle and its bounds.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkRRect_Reference#RRect'>Round Rect</a> <a href='#SkPath_addRoundRect'>addRoundRect</a><sup><a href='#SkPath_addRoundRect_2'>[2]</a></sup> <a href='#SkPath_addRRect'>addRRect</a><sup><a href='#SkPath_addRRect_2'>[2]</a></sup>
|
|
|
|
---
|
|
|
|
<a name='SkPath_reset'></a>
|
|
## reset
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_reset'>reset</a>()
|
|
</pre>
|
|
|
|
Sets <a href='#Path'>Path</a> to its initial state.
|
|
Removes <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Weights</a>, and sets <a href='#SkPath_FillType'>FillType</a> to <a href='#SkPath_kWinding_FillType'>kWinding FillType</a>.
|
|
Internal storage associated with <a href='#Path'>Path</a> is released.
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="8cdca35d2964bbbecb93d79a13f71c65"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_rewind'>rewind</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_rewind'></a>
|
|
## rewind
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_rewind'>rewind</a>()
|
|
</pre>
|
|
|
|
Sets <a href='#Path'>Path</a> to its initial state, preserving internal storage.
|
|
Removes <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Weights</a>, and sets <a href='#SkPath_FillType'>FillType</a> to <a href='#SkPath_kWinding_FillType'>kWinding FillType</a>.
|
|
Internal storage associated with <a href='#Path'>Path</a> is retained.
|
|
|
|
Use <a href='#SkPath_rewind'>rewind</a> instead of <a href='#SkPath_reset'>reset</a> if <a href='#Path'>Path</a> storage will be reused and performance
|
|
is critical.
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="f1fedbb89da9c2a33a91805175663012"><div>Although path1 retains its internal storage, it is indistinguishable from
|
|
a newly initialized path.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_reset'>reset</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_isEmpty'></a>
|
|
## isEmpty
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_isEmpty'>isEmpty</a>() const
|
|
</pre>
|
|
|
|
Returns if <a href='#Path'>Path</a> is empty.
|
|
Empty <a href='#Path'>Path</a> may have <a href='#SkPath_FillType'>FillType</a> but has no <a href='SkPoint_Reference#SkPoint'>SkPoint</a>, <a href='#SkPath_Verb'>Verb</a>, or <a href='#Conic_Weight'>Conic Weight</a>.
|
|
<a href='#SkPath_empty_constructor'>SkPath()</a> constructs empty <a href='#Path'>Path</a>; <a href='#SkPath_reset'>reset</a> and <a href='#SkPath_rewind'>rewind</a> make <a href='#Path'>Path</a> empty.
|
|
|
|
### Return Value
|
|
|
|
true if the path contains no <a href='#SkPath_Verb'>Verb</a> array
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="0b34e6d55d11586744adeb889d2a12f4">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
initial path is empty
|
|
after moveTo path is not empty
|
|
after rewind path is empty
|
|
after lineTo path is not empty
|
|
after reset path is empty
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_empty_constructor'>SkPath()</a> <a href='#SkPath_reset'>reset</a> <a href='#SkPath_rewind'>rewind</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_isLastContourClosed'></a>
|
|
## isLastContourClosed
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_isLastContourClosed'>isLastContourClosed</a>() const
|
|
</pre>
|
|
|
|
Returns if <a href='#Contour'>Contour</a> is closed.
|
|
<a href='#Contour'>Contour</a> is closed if <a href='#Path'>Path</a> <a href='#SkPath_Verb'>Verb</a> array was last modified by <a href='#SkPath_close'>close</a>. When stroked,
|
|
closed <a href='#Contour'>Contour</a> draws <a href='SkPaint_Reference#Stroke_Join'>Paint Stroke Join</a> instead of <a href='SkPaint_Reference#Stroke_Cap'>Paint Stroke Cap</a> at first and last <a href='SkPoint_Reference#Point'>Point</a>.
|
|
|
|
### Return Value
|
|
|
|
true if the last <a href='#Contour'>Contour</a> ends with a <a href='#SkPath_kClose_Verb'>kClose Verb</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="03b740ab94b9017800a52e30b5e7fee7"><div><a href='#SkPath_close'>close</a> has no effect if <a href='#Path'>Path</a> is empty; <a href='#SkPath_isLastContourClosed'>isLastContourClosed</a> returns
|
|
false until <a href='#Path'>Path</a> has geometry followed by <a href='#SkPath_close'>close</a>.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
initial last contour is not closed
|
|
after close last contour is not closed
|
|
after lineTo last contour is not closed
|
|
after close last contour is closed
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_close'>close</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_isFinite'></a>
|
|
## isFinite
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_isFinite'>isFinite</a>() const
|
|
</pre>
|
|
|
|
Returns true for finite <a href='SkPoint_Reference#Point'>Point</a> array values between negative <a href='undocumented#SK_ScalarMax'>SK ScalarMax</a> and
|
|
positive <a href='undocumented#SK_ScalarMax'>SK ScalarMax</a>. Returns false for any <a href='SkPoint_Reference#Point'>Point</a> array value of
|
|
<a href='undocumented#SK_ScalarInfinity'>SK ScalarInfinity</a>, <a href='undocumented#SK_ScalarNegativeInfinity'>SK ScalarNegativeInfinity</a>, or <a href='undocumented#SK_ScalarNaN'>SK ScalarNaN</a>.
|
|
|
|
### Return Value
|
|
|
|
true if all <a href='SkPoint_Reference#Point'>Point</a> values are finite
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="dd4e4dd2aaa8039b2430729c6b3af817">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
initial path is finite
|
|
after line path is finite
|
|
after scale path is not finite
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='undocumented#SkScalar'>SkScalar</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_isVolatile'></a>
|
|
## isVolatile
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_isVolatile'>isVolatile</a>() const
|
|
</pre>
|
|
|
|
Returns true if the path is volatile; it will not be altered or discarded
|
|
by the caller after it is drawn. <a href='#Path'>Paths</a> by default have volatile set false, allowing
|
|
<a href='SkSurface_Reference#Surface'>Surface</a> to attach a cache of data which speeds repeated drawing. If true, <a href='SkSurface_Reference#Surface'>Surface</a>
|
|
may not speed repeated drawing.
|
|
|
|
### Return Value
|
|
|
|
true if caller will alter <a href='#Path'>Path</a> after drawing
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="c722ebe8ac991d77757799ce29e509e1">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
volatile by default is false
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_setIsVolatile'>setIsVolatile</a>
|
|
|
|
---
|
|
|
|
## <a name='Volatile'>Volatile</a>
|
|
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_setIsVolatile'>setIsVolatile</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>sets if <a href='undocumented#Device'>Device</a> should not cache</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<a name='SkPath_setIsVolatile'></a>
|
|
## setIsVolatile
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_setIsVolatile'>setIsVolatile</a>(bool <a href='#SkPath_isVolatile'>isVolatile</a>)
|
|
</pre>
|
|
|
|
Specifies whether <a href='#Path'>Path</a> is volatile; whether it will be altered or discarded
|
|
by the caller after it is drawn. <a href='#Path'>Paths</a> by default have volatile set false, allowing
|
|
<a href='undocumented#Device'>Device</a> to attach a cache of data which speeds repeated drawing.
|
|
|
|
Mark temporary paths, discarded or modified after use, as volatile
|
|
to inform <a href='undocumented#Device'>Device</a> that the path need not be cached.
|
|
|
|
Mark animating <a href='#Path'>Path</a> volatile to improve performance.
|
|
Mark unchanging <a href='#Path'>Path</a> non-volatile to improve repeated rendering.
|
|
|
|
<a href='undocumented#Raster_Surface'>Raster Surface</a> <a href='#Path'>Path</a> draws are affected by volatile for some shadows.
|
|
<a href='undocumented#GPU_Surface'>GPU Surface</a> <a href='#Path'>Path</a> draws are affected by volatile for some shadows and concave geometries.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_setIsVolatile_isVolatile'><code><strong>isVolatile</strong></code></a></td>
|
|
<td>true if caller will alter <a href='#Path'>Path</a> after drawing</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="2049ff5141f0c80aac497618622b28af"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_isVolatile'>isVolatile</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_IsLineDegenerate'></a>
|
|
## IsLineDegenerate
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
static bool <a href='#SkPath_IsLineDegenerate'>IsLineDegenerate</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p1, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p2, bool exact)
|
|
</pre>
|
|
|
|
Tests if <a href='undocumented#Line'>Line</a> between <a href='SkPoint_Reference#Point'>Point</a> pair is degenerate.
|
|
<a href='undocumented#Line'>Line</a> with no length or that moves a very short distance is degenerate; it is
|
|
treated as a point.
|
|
|
|
<a href='#SkPath_IsLineDegenerate_exact'>exact</a> changes the equality test. If true, returns true only if <a href='#SkPath_IsLineDegenerate_p1'>p1</a> equals <a href='#SkPath_IsLineDegenerate_p2'>p2</a>.
|
|
If false, returns true if <a href='#SkPath_IsLineDegenerate_p1'>p1</a> equals or nearly equals <a href='#SkPath_IsLineDegenerate_p2'>p2</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_IsLineDegenerate_p1'><code><strong>p1</strong></code></a></td>
|
|
<td>line start point</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_IsLineDegenerate_p2'><code><strong>p2</strong></code></a></td>
|
|
<td>line end point</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_IsLineDegenerate_exact'><code><strong>exact</strong></code></a></td>
|
|
<td>if false, allow nearly equals</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='undocumented#Line'>Line</a> is degenerate; its length is effectively zero
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="97a031f9186ade586928563840ce9116"><div>As single precision floats, 100 and 100.000001 have the same bit representation,
|
|
and are exactly equal. 100 and 100.0001 have different bit representations, and
|
|
are not exactly equal, but are nearly equal.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
line from (100,100) to (100,100) is degenerate, nearly
|
|
line from (100,100) to (100,100) is degenerate, exactly
|
|
line from (100,100) to (100.0001,100.0001) is degenerate, nearly
|
|
line from (100,100) to (100.0001,100.0001) is not degenerate, exactly
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_IsQuadDegenerate'>IsQuadDegenerate</a> <a href='#SkPath_IsCubicDegenerate'>IsCubicDegenerate</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_IsQuadDegenerate'></a>
|
|
## IsQuadDegenerate
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
static bool <a href='#SkPath_IsQuadDegenerate'>IsQuadDegenerate</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p1, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p2, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p3, bool exact)
|
|
</pre>
|
|
|
|
Tests if <a href='#Quad'>Quad</a> is degenerate.
|
|
<a href='#Quad'>Quad</a> with no length or that moves a very short distance is degenerate; it is
|
|
treated as a point.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_IsQuadDegenerate_p1'><code><strong>p1</strong></code></a></td>
|
|
<td><a href='#Quad'>Quad</a> start point</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_IsQuadDegenerate_p2'><code><strong>p2</strong></code></a></td>
|
|
<td><a href='#Quad'>Quad</a> control point</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_IsQuadDegenerate_p3'><code><strong>p3</strong></code></a></td>
|
|
<td><a href='#Quad'>Quad</a> end point</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_IsQuadDegenerate_exact'><code><strong>exact</strong></code></a></td>
|
|
<td>if true, returns true only if <a href='#SkPath_IsQuadDegenerate_p1'>p1</a>, <a href='#SkPath_IsQuadDegenerate_p2'>p2</a>, and <a href='#SkPath_IsQuadDegenerate_p3'>p3</a> are equal;
|
|
if false, returns true if <a href='#SkPath_IsQuadDegenerate_p1'>p1</a>, <a href='#SkPath_IsQuadDegenerate_p2'>p2</a>, and <a href='#SkPath_IsQuadDegenerate_p3'>p3</a> are equal or nearly equal</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Quad'>Quad</a> is degenerate; its length is effectively zero
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="a2b255a7dac1926cc3a247d318d63c62"><div>As single precision floats: 100, 100.00001, and 100.00002 have different bit representations
|
|
but nearly the same value. Translating all three by 1000 gives them the same bit representation;
|
|
the fractional portion of the number can not be represented by the float and is lost.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
quad (100,100), (100.00001,100.00001), (100.00002,100.00002) is degenerate, nearly
|
|
quad (1100,1100), (1100,1100), (1100,1100) is degenerate, nearly
|
|
quad (100,100), (100.00001,100.00001), (100.00002,100.00002) is not degenerate, exactly
|
|
quad (1100,1100), (1100,1100), (1100,1100) is degenerate, exactly
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_IsLineDegenerate'>IsLineDegenerate</a> <a href='#SkPath_IsCubicDegenerate'>IsCubicDegenerate</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_IsCubicDegenerate'></a>
|
|
## IsCubicDegenerate
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
static bool <a href='#SkPath_IsCubicDegenerate'>IsCubicDegenerate</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p1, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p2, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p3,
|
|
const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p4, bool exact)
|
|
</pre>
|
|
|
|
Tests if <a href='#Cubic'>Cubic</a> is degenerate.
|
|
<a href='#Cubic'>Cubic</a> with no length or that moves a very short distance is degenerate; it is
|
|
treated as a point.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_IsCubicDegenerate_p1'><code><strong>p1</strong></code></a></td>
|
|
<td><a href='#Cubic'>Cubic</a> start point</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_IsCubicDegenerate_p2'><code><strong>p2</strong></code></a></td>
|
|
<td><a href='#Cubic'>Cubic</a> control point 1</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_IsCubicDegenerate_p3'><code><strong>p3</strong></code></a></td>
|
|
<td><a href='#Cubic'>Cubic</a> control point 2</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_IsCubicDegenerate_p4'><code><strong>p4</strong></code></a></td>
|
|
<td><a href='#Cubic'>Cubic</a> end point</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_IsCubicDegenerate_exact'><code><strong>exact</strong></code></a></td>
|
|
<td>if true, returns true only if <a href='#SkPath_IsCubicDegenerate_p1'>p1</a>, <a href='#SkPath_IsCubicDegenerate_p2'>p2</a>, <a href='#SkPath_IsCubicDegenerate_p3'>p3</a>, and <a href='#SkPath_IsCubicDegenerate_p4'>p4</a> are equal;
|
|
if false, returns true if <a href='#SkPath_IsCubicDegenerate_p1'>p1</a>, <a href='#SkPath_IsCubicDegenerate_p2'>p2</a>, <a href='#SkPath_IsCubicDegenerate_p3'>p3</a>, and <a href='#SkPath_IsCubicDegenerate_p4'>p4</a> are equal or nearly equal</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Cubic'>Cubic</a> is degenerate; its length is effectively zero
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="6b97099acdae80b16df0c4241f593991">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
0.00024414062 is degenerate
|
|
0.00024414065 is length
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
---
|
|
|
|
<a name='SkPath_isLine'></a>
|
|
## isLine
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_isLine'>isLine</a>(<a href='SkPoint_Reference#SkPoint'>SkPoint</a> line[2]) const
|
|
</pre>
|
|
|
|
Returns true if <a href='#Path'>Path</a> contains only one <a href='undocumented#Line'>Line</a>;
|
|
<a href='#Verb'>Path Verb</a> array has two entries: <a href='#SkPath_kMove_Verb'>kMove Verb</a>, <a href='#SkPath_kLine_Verb'>kLine Verb</a>.
|
|
If <a href='#Path'>Path</a> contains one <a href='undocumented#Line'>Line</a> and <a href='#SkPath_isLine_line'>line</a> is not nullptr, <a href='#SkPath_isLine_line'>line</a> is set to
|
|
<a href='undocumented#Line'>Line</a> start point and <a href='undocumented#Line'>Line</a> end point.
|
|
Returns false if <a href='#Path'>Path</a> is not one <a href='undocumented#Line'>Line</a>; <a href='#SkPath_isLine_line'>line</a> is unaltered.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_isLine_line'><code><strong>line</strong></code></a></td>
|
|
<td>storage for <a href='undocumented#Line'>Line</a>. May be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Path'>Path</a> contains exactly one <a href='undocumented#Line'>Line</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="1ad07d56e4258e041606d50cad969392">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
empty is not line
|
|
zero line is line (0,0) (0,0)
|
|
line is line (10,10) (20,20)
|
|
second move is not line
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
---
|
|
|
|
## <a name='Point_Array'>Point Array</a>
|
|
|
|
<a href='#Point_Array'>Point Array</a> contains <a href='SkPoint_Reference#Point'>Points</a> satisfying the allocated <a href='SkPoint_Reference#Point'>Points</a> for
|
|
each <a href='#SkPath_Verb'>Verb</a> in <a href='#Verb_Array'>Verb Array</a>. For instance, <a href='#Path'>Path</a> containing one <a href='#Contour'>Contour</a> with <a href='undocumented#Line'>Line</a>
|
|
and <a href='#Quad'>Quad</a> is described by <a href='#Verb_Array'>Verb Array</a>: Verb::kMoveTo, Verb::kLineTo, Verb::kQuadTo; and
|
|
one <a href='SkPoint_Reference#Point'>Point</a> for move, one <a href='SkPoint_Reference#Point'>Point</a> for <a href='undocumented#Line'>Line</a>, two <a href='SkPoint_Reference#Point'>Points</a> for <a href='#Quad'>Quad</a>; totaling four <a href='SkPoint_Reference#Point'>Points</a>.
|
|
|
|
<a href='#Point_Array'>Point Array</a> may be read directly from <a href='#Path'>Path</a> with <a href='#SkPath_getPoints'>getPoints</a>, or inspected with
|
|
<a href='#SkPath_getPoint'>getPoint</a>, with <a href='#SkPath_Iter'>Iter</a>, or with <a href='#SkPath_RawIter'>RawIter</a>.
|
|
|
|
<a name='SkPath_getPoints'></a>
|
|
## getPoints
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
int <a href='#SkPath_getPoints'>getPoints</a>(<a href='SkPoint_Reference#SkPoint'>SkPoint</a> points[], int max) const
|
|
</pre>
|
|
|
|
Returns number of <a href='#SkPath_getPoints_points'>points</a> in <a href='#Path'>Path</a>. Up to max <a href='#SkPath_getPoints_points'>points</a> are copied.
|
|
<a href='#SkPath_getPoints_points'>points</a> may be nullptr; then, max must be zero.
|
|
If max is greater than number of <a href='#SkPath_getPoints_points'>points</a>, excess <a href='#SkPath_getPoints_points'>points</a> storage is unaltered.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_getPoints_points'><code><strong>points</strong></code></a></td>
|
|
<td>storage for <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> array. May be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_getPoints_max'><code><strong>max</strong></code></a></td>
|
|
<td>maximum to copy; must be greater than or equal to zero</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
<a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> array length
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="9bc86efda08cbcd9c6f7c5f220294a24">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
no points point count: 3
|
|
zero max point count: 3
|
|
too small point count: 3 (0,0) (20,20)
|
|
just right point count: 3 (0,0) (20,20) (-10,-10)
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_countPoints'>countPoints</a> <a href='#SkPath_getPoint'>getPoint</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_countPoints'></a>
|
|
## countPoints
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
int <a href='#SkPath_countPoints'>countPoints</a>() const
|
|
</pre>
|
|
|
|
Returns the number of points in <a href='#Path'>Path</a>.
|
|
<a href='SkPoint_Reference#Point'>Point</a> count is initially zero.
|
|
|
|
### Return Value
|
|
|
|
<a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> array length
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="bca6379ccef62cb081b10db7381deb27">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
empty point count: 0
|
|
zero line point count: 2
|
|
line point count: 2
|
|
second move point count: 3
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_getPoints'>getPoints</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_getPoint'></a>
|
|
## getPoint
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='SkPoint_Reference#SkPoint'>SkPoint</a> <a href='#SkPath_getPoint'>getPoint</a>(int index) const
|
|
</pre>
|
|
|
|
Returns <a href='SkPoint_Reference#Point'>Point</a> at <a href='#SkPath_getPoint_index'>index</a> in <a href='#Point_Array'>Point Array</a>. Valid range for <a href='#SkPath_getPoint_index'>index</a> is
|
|
0 to <a href='#SkPath_countPoints'>countPoints</a> - 1.
|
|
Returns (0, 0) if <a href='#SkPath_getPoint_index'>index</a> is out of range.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_getPoint_index'><code><strong>index</strong></code></a></td>
|
|
<td><a href='SkPoint_Reference#Point'>Point</a> array element selector</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
<a href='SkPoint_Reference#Point'>Point</a> array value or (0, 0)
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="42885f1df13de109adccc5d531f62111">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
point 0: (-10,-10)
|
|
point 1: (10,10)
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_countPoints'>countPoints</a> <a href='#SkPath_getPoints'>getPoints</a>
|
|
|
|
---
|
|
|
|
## <a name='Verb_Array'>Verb Array</a>
|
|
|
|
<a href='#Verb_Array'>Verb Array</a> always starts with <a href='#SkPath_kMove_Verb'>kMove Verb</a>.
|
|
If <a href='#SkPath_kClose_Verb'>kClose Verb</a> is not the last entry, it is always followed by <a href='#SkPath_kMove_Verb'>kMove Verb</a>;
|
|
the quantity of <a href='#SkPath_kMove_Verb'>kMove Verb</a> equals the <a href='#Contour'>Contour</a> count.
|
|
<a href='#Verb_Array'>Verb Array</a> does not include or count <a href='#SkPath_kDone_Verb'>kDone Verb</a>; it is a convenience
|
|
returned when iterating through <a href='#Verb_Array'>Verb Array</a>.
|
|
|
|
<a href='#Verb_Array'>Verb Array</a> may be read directly from <a href='#Path'>Path</a> with <a href='#SkPath_getVerbs'>getVerbs</a>, or inspected with <a href='#SkPath_Iter'>Iter</a>,
|
|
or with <a href='#SkPath_RawIter'>RawIter</a>.
|
|
|
|
<a name='SkPath_countVerbs'></a>
|
|
## countVerbs
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
int <a href='#SkPath_countVerbs'>countVerbs</a>() const
|
|
</pre>
|
|
|
|
Returns the number of <a href='#Verb'>Verbs</a>: <a href='#SkPath_kMove_Verb'>kMove Verb</a>, <a href='#SkPath_kLine_Verb'>kLine Verb</a>, <a href='#SkPath_kQuad_Verb'>kQuad Verb</a>, <a href='#SkPath_kConic_Verb'>kConic Verb</a>,
|
|
<a href='#SkPath_kCubic_Verb'>kCubic Verb</a>, and <a href='#SkPath_kClose_Verb'>kClose Verb</a>; added to <a href='#Path'>Path</a>.
|
|
|
|
### Return Value
|
|
|
|
length of <a href='#Verb_Array'>Verb Array</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="af0c66aea3ef81b709664c7007f48aae">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
empty verb count: 0
|
|
round rect verb count: 10
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_getVerbs'>getVerbs</a> <a href='#SkPath_Iter'>Iter</a> <a href='#SkPath_RawIter'>RawIter</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_getVerbs'></a>
|
|
## getVerbs
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
int <a href='#SkPath_getVerbs'>getVerbs</a>(uint8_t verbs[], int max) const
|
|
</pre>
|
|
|
|
Returns the number of <a href='#SkPath_getVerbs_verbs'>verbs</a> in the path. Up to max <a href='#SkPath_getVerbs_verbs'>verbs</a> are copied. The
|
|
<a href='#SkPath_getVerbs_verbs'>verbs</a> are copied as one byte per verb.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_getVerbs_verbs'><code><strong>verbs</strong></code></a></td>
|
|
<td>storage for <a href='#SkPath_getVerbs_verbs'>verbs</a>, may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_getVerbs_max'><code><strong>max</strong></code></a></td>
|
|
<td>maximum number to copy into <a href='#SkPath_getVerbs_verbs'>verbs</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
the actual number of <a href='#SkPath_getVerbs_verbs'>verbs</a> in the path
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="2ec66880966a6133ddd9331ce7323438">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
no verbs verb count: 3
|
|
zero max verb count: 3
|
|
too small verb count: 3 move line
|
|
just right verb count: 3 move line line
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_countVerbs'>countVerbs</a> <a href='#SkPath_getPoints'>getPoints</a> <a href='#SkPath_Iter'>Iter</a> <a href='#SkPath_RawIter'>RawIter</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_swap'></a>
|
|
## swap
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_swap'>swap</a>(<a href='#SkPath'>SkPath</a>& other)
|
|
</pre>
|
|
|
|
Exchanges the <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, <a href='#Conic_Weight'>Weights</a>, and <a href='#Fill_Type'>Fill Type</a> with <a href='#SkPath_swap_other'>other</a>.
|
|
Cached state is also exchanged. <a href='#SkPath_swap'>swap</a> internally exchanges pointers, so
|
|
it is lightweight and does not allocate memory.
|
|
|
|
<a href='#SkPath_swap'>swap</a> usage has largely been replaced by <a href='#SkPath_copy_operator'>operator=(const SkPath& path)</a>.
|
|
<a href='#Path'>Paths</a> do not copy their content on assignment until they are written to,
|
|
making assignment as efficient as <a href='#SkPath_swap'>swap</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_swap_other'><code><strong>other</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> exchanged by value</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="4c5ebee2b5039e5faefa07ae63a15467">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
path1 bounds = 0, 0, 0, 0
|
|
path2 bounds = 10, 20, 30, 40
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_copy_operator'>operator=(const SkPath& path)</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_getBounds'></a>
|
|
## getBounds
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='#SkPath_getBounds'>getBounds</a>() const
|
|
</pre>
|
|
|
|
Returns minimum and maximum axes values of <a href='#Point_Array'>Point Array</a>.
|
|
Returns (0, 0, 0, 0) if <a href='#Path'>Path</a> contains no points. Returned bounds width and height may
|
|
be larger or smaller than area affected when <a href='#Path'>Path</a> is drawn.
|
|
|
|
<a href='SkRect_Reference#Rect'>Rect</a> returned includes all <a href='SkPoint_Reference#Point'>Points</a> added to <a href='#Path'>Path</a>, including <a href='SkPoint_Reference#Point'>Points</a> associated with
|
|
<a href='#SkPath_kMove_Verb'>kMove Verb</a> that define empty <a href='#Contour'>Contours</a>.
|
|
|
|
### Return Value
|
|
|
|
bounds of all <a href='SkPoint_Reference#Point'>Points</a> in <a href='#Point_Array'>Point Array</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="45c0fc3acb74fab99d544b80eadd10ad"><div>Bounds of upright <a href='undocumented#Circle'>Circle</a> can be predicted from center and radius.
|
|
Bounds of rotated <a href='undocumented#Circle'>Circle</a> includes control <a href='SkPoint_Reference#Point'>Points</a> outside of filled area.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
empty bounds = 0, 0, 0, 0
|
|
circle bounds = 25, 20, 75, 70
|
|
rotated circle bounds = 14.6447, 9.64466, 85.3553, 80.3553
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_computeTightBounds'>computeTightBounds</a> <a href='#SkPath_updateBoundsCache'>updateBoundsCache</a>
|
|
|
|
---
|
|
|
|
## <a name='Utility'>Utility</a>
|
|
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_ConvertConicToQuads'>ConvertConicToQuads</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>approximates <a href='#Conic'>Conic</a> with <a href='#Quad'>Quad</a> array</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_ConvertToNonInverseFillType'>ConvertToNonInverseFillType</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns <a href='#Fill_Type'>Fill Type</a> representing inside geometry</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_dump_2'>dump</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>sends text representation to stream</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_dump'>dump(SkWStream* stream, bool forceClose, bool dumpAsHex)</a> const</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_dump_2'>dump</a> const</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_dumpHex'>dumpHex</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>sends text representation using hexadecimal to standard output</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_getSegmentMasks'>getSegmentMasks</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns types in <a href='#Verb_Array'>Verb Array</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_incReserve'>incReserve</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>reserves space for additional data</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_readFromMemory'>readFromMemory</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>initializes from buffer</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_serialize'>serialize</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>copies data to buffer</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_setLastPt'>setLastPt</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>replaces <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_setLastPt'>setLastPt(SkScalar x, SkScalar y)</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_shrinkToFit'>shrinkToFit</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>removes unused reserved space</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_updateBoundsCache'>updateBoundsCache</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>refreshes result of <a href='#SkPath_getBounds'>getBounds</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_writeToMemory'>writeToMemory</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>copies data to buffer</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<a name='SkPath_updateBoundsCache'></a>
|
|
## updateBoundsCache
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_updateBoundsCache'>updateBoundsCache</a>() const
|
|
</pre>
|
|
|
|
Updates internal bounds so that subsequent calls to <a href='#SkPath_getBounds'>getBounds</a> are instantaneous.
|
|
Unaltered copies of <a href='#Path'>Path</a> may also access cached bounds through <a href='#SkPath_getBounds'>getBounds</a>.
|
|
|
|
For now, identical to calling <a href='#SkPath_getBounds'>getBounds</a> and ignoring the returned value.
|
|
|
|
Call to prepare <a href='#Path'>Path</a> subsequently drawn from multiple threads,
|
|
to avoid a race condition where each draw separately computes the bounds.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="bb761cd858e6d0ca05627262cd22ff5e">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
#Volatile
|
|
uncached avg: 0.18048 ms
|
|
cached avg: 0.182784 ms
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_getBounds'>getBounds</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_computeTightBounds'></a>
|
|
## computeTightBounds
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkPath_computeTightBounds'>computeTightBounds</a>() const
|
|
</pre>
|
|
|
|
Returns minimum and maximum axes values of the lines and curves in <a href='#Path'>Path</a>.
|
|
Returns (0, 0, 0, 0) if <a href='#Path'>Path</a> contains no points.
|
|
Returned bounds width and height may be larger or smaller than area affected
|
|
when <a href='#Path'>Path</a> is drawn.
|
|
|
|
Includes <a href='SkPoint_Reference#Point'>Points</a> associated with <a href='#SkPath_kMove_Verb'>kMove Verb</a> that define empty
|
|
<a href='#Contour'>Contours</a>.
|
|
|
|
Behaves identically to <a href='#SkPath_getBounds'>getBounds</a> when <a href='#Path'>Path</a> contains
|
|
only lines. If <a href='#Path'>Path</a> contains curves, computed bounds includes
|
|
the maximum extent of the <a href='#Quad'>Quad</a>, <a href='#Conic'>Conic</a>, or <a href='#Cubic'>Cubic</a>; is slower than <a href='#SkPath_getBounds'>getBounds</a>;
|
|
and unlike <a href='#SkPath_getBounds'>getBounds</a>, does not cache the result.
|
|
|
|
### Return Value
|
|
|
|
tight bounds of curves in <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="9a39c56e95b19a657133b7ad1fe0cf03">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
empty bounds = 0, 0, 0, 0
|
|
circle bounds = 25, 20, 75, 70
|
|
rotated circle bounds = 25, 20, 75, 70
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_getBounds'>getBounds</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_conservativelyContainsRect'></a>
|
|
## conservativelyContainsRect
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_conservativelyContainsRect'>conservativelyContainsRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& rect) const
|
|
</pre>
|
|
|
|
Returns true if <a href='#SkPath_conservativelyContainsRect_rect'>rect</a> is contained by <a href='#Path'>Path</a>.
|
|
May return false when <a href='#SkPath_conservativelyContainsRect_rect'>rect</a> is contained by <a href='#Path'>Path</a>.
|
|
|
|
For now, only returns true if <a href='#Path'>Path</a> has one <a href='#Contour'>Contour</a> and is convex.
|
|
<a href='#SkPath_conservativelyContainsRect_rect'>rect</a> may share points and edges with <a href='#Path'>Path</a> and be contained.
|
|
Returns true if <a href='#SkPath_conservativelyContainsRect_rect'>rect</a> is empty, that is, it has zero width or height; and
|
|
the <a href='SkPoint_Reference#Point'>Point</a> or <a href='undocumented#Line'>Line</a> described by <a href='#SkPath_conservativelyContainsRect_rect'>rect</a> is contained by <a href='#Path'>Path</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_conservativelyContainsRect_rect'><code><strong>rect</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#Rect'>Rect</a>, <a href='undocumented#Line'>Line</a>, or <a href='SkPoint_Reference#Point'>Point</a> checked for containment</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#SkPath_conservativelyContainsRect_rect'>rect</a> is contained
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="41638d13e40fa449ece354dde5fb1941"><div><a href='SkRect_Reference#Rect'>Rect</a> is drawn in blue if it is contained by red <a href='#Path'>Path</a>.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_contains'>contains</a> <a href='undocumented#Op'>Op</a> <a href='SkRect_Reference#Rect'>Rect</a> <a href='#SkPath_Convexity'>Convexity</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_incReserve'></a>
|
|
## incReserve
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_incReserve'>incReserve</a>(unsigned extraPtCount)
|
|
</pre>
|
|
|
|
Grows <a href='#Path'>Path</a> <a href='#Verb_Array'>Verb Array</a> and <a href='#Point_Array'>Point Array</a> to contain <a href='#SkPath_incReserve_extraPtCount'>extraPtCount</a> additional <a href='SkPoint_Reference#Point'>Points</a>.
|
|
May improve performance and use less memory by
|
|
reducing the number and size of allocations when creating <a href='#Path'>Path</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_incReserve_extraPtCount'><code><strong>extraPtCount</strong></code></a></td>
|
|
<td>number of additional <a href='SkPoint_Reference#Point'>Points</a> to allocate</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="f2260f2a170a54aef5bafe5b91c121b3"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Point_Array'>Point Array</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_shrinkToFit'></a>
|
|
## shrinkToFit
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_shrinkToFit'>shrinkToFit</a>()
|
|
</pre>
|
|
|
|
Removes unused space in <a href='#Path'>Path</a> <a href='#Verb_Array'>Verb Array</a> and <a href='#Point_Array'>Point Array</a>.
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_incReserve'>incReserve</a>
|
|
|
|
---
|
|
|
|
## <a name='Build'>Build</a>
|
|
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addArc'>addArc</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds one <a href='#Contour'>Contour</a> containing <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addCircle'>addCircle</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds one <a href='#Contour'>Contour</a> containing <a href='undocumented#Circle'>Circle</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addOval'>addOval</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds one <a href='#Contour'>Contour</a> containing <a href='undocumented#Oval'>Oval</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addOval'>addOval(const SkRect& oval, Direction dir = kCW Direction)</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addOval_2'>addOval(const SkRect& oval, Direction dir, unsigned start)</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addPath'>addPath</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds contents of <a href='#Path'>Path</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addPath'>addPath(const SkPath& src, SkScalar dx, SkScalar dy, AddPathMode mode = kAppend AddPathMode)</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addPath_2'>addPath(const SkPath& src, AddPathMode mode = kAppend AddPathMode)</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addPath_3'>addPath(const SkPath& src, const SkMatrix& matrix, AddPathMode mode = kAppend AddPathMode)</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addPoly'>addPoly</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds one <a href='#Contour'>Contour</a> containing connected lines</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addPoly'>addPoly(const SkPoint pts[], int count, bool close)</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addPoly_2'>addPoly(const std::initializer list<SkPoint>& list, bool close)</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addRRect'>addRRect</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds one <a href='#Contour'>Contour</a> containing <a href='SkRRect_Reference#RRect'>Round Rect</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addRRect'>addRRect(const SkRRect& rrect, Direction dir = kCW Direction)</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addRRect_2'>addRRect(const SkRRect& rrect, Direction dir, unsigned start)</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addRect'>addRect</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds one <a href='#Contour'>Contour</a> containing <a href='SkRect_Reference#Rect'>Rect</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addRect'>addRect(const SkRect& rect, Direction dir = kCW Direction)</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addRect_2'>addRect(const SkRect& rect, Direction dir, unsigned start)</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addRect_3'>addRect(SkScalar left, SkScalar top, SkScalar right, SkScalar bottom, Direction dir = kCW Direction)</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addRoundRect'>addRoundRect</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds one <a href='#Contour'>Contour</a> containing <a href='SkRRect_Reference#RRect'>Round Rect</a> with common corner radii</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addRoundRect'>addRoundRect(const SkRect& rect, SkScalar rx, SkScalar ry, Direction dir = kCW Direction)</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_addRoundRect_2'>addRoundRect(const SkRect& rect, const SkScalar radii[], Direction dir = kCW Direction)</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_arcTo'>arcTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_arcTo'>arcTo(const SkRect& oval, SkScalar startAngle, SkScalar sweepAngle, bool forceMoveTo)</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_close'>close</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>makes last <a href='#Contour'>Contour</a> a loop</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_cubicTo'>cubicTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='#Cubic'>Cubic</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_cubicTo'>cubicTo(SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2, SkScalar x3, SkScalar y3)</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_lineTo'>lineTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='undocumented#Line'>Line</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_lineTo'>lineTo(SkScalar x, SkScalar y)</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_lineTo_2'>lineTo(const SkPoint& p)</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_moveTo'>moveTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>starts <a href='#Contour'>Contour</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_moveTo'>moveTo(SkScalar x, SkScalar y)</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_moveTo_2'>moveTo(const SkPoint& p)</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_rArcTo'>rArcTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='#Arc'>Arc</a> relative to <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_rConicTo'>rConicTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='#Conic'>Conic</a> relative to <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_rCubicTo'>rCubicTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='#Cubic'>Cubic</a> relative to <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_rLineTo'>rLineTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='undocumented#Line'>Line</a> relative to <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_rMoveTo'>rMoveTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>starts <a href='#Contour'>Contour</a> relative to <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_rQuadTo'>rQuadTo</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>appends <a href='#Quad'>Quad</a> relative to <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_reverseAddPath'>reverseAddPath</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>adds contents of <a href='#Path'>Path</a> back to front</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<a name='SkPath_moveTo'></a>
|
|
## moveTo
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_moveTo'>moveTo</a>(<a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y)
|
|
</pre>
|
|
|
|
Adds beginning of <a href='#Contour'>Contour</a> at <a href='SkPoint_Reference#Point'>Point</a> (<a href='#SkPath_moveTo_x'>x</a>, <a href='#SkPath_moveTo_y'>y</a>).
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_moveTo_x'><code><strong>x</strong></code></a></td>
|
|
<td><a href='#SkPath_moveTo_x'>x</a>-axis value of <a href='#Contour'>Contour</a> start</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_moveTo_y'><code><strong>y</strong></code></a></td>
|
|
<td><a href='#SkPath_moveTo_y'>y</a>-axis value of <a href='#Contour'>Contour</a> start</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="84101d341e934a535a41ad6cf42218ce"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Contour'>Contour</a> <a href='#SkPath_lineTo'>lineTo</a><sup><a href='#SkPath_lineTo_2'>[2]</a></sup> <a href='#SkPath_rMoveTo'>rMoveTo</a> <a href='#SkPath_quadTo'>quadTo</a><sup><a href='#SkPath_quadTo_2'>[2]</a></sup> <a href='#SkPath_conicTo'>conicTo</a><sup><a href='#SkPath_conicTo_2'>[2]</a></sup> <a href='#SkPath_cubicTo'>cubicTo</a><sup><a href='#SkPath_cubicTo_2'>[2]</a></sup> <a href='#SkPath_close'>close</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_moveTo_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_moveTo'>moveTo</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p)
|
|
</pre>
|
|
|
|
Adds beginning of <a href='#Contour'>Contour</a> at <a href='SkPoint_Reference#Point'>Point</a> <a href='#SkPath_moveTo_2_p'>p</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_moveTo_2_p'><code><strong>p</strong></code></a></td>
|
|
<td>contour start</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="cb8d37990f6e7df3bcc85e7240c81274"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Contour'>Contour</a> <a href='#SkPath_lineTo'>lineTo</a><sup><a href='#SkPath_lineTo_2'>[2]</a></sup> <a href='#SkPath_rMoveTo'>rMoveTo</a> <a href='#SkPath_quadTo'>quadTo</a><sup><a href='#SkPath_quadTo_2'>[2]</a></sup> <a href='#SkPath_conicTo'>conicTo</a><sup><a href='#SkPath_conicTo_2'>[2]</a></sup> <a href='#SkPath_cubicTo'>cubicTo</a><sup><a href='#SkPath_cubicTo_2'>[2]</a></sup> <a href='#SkPath_close'>close</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_rMoveTo'></a>
|
|
## rMoveTo
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_rMoveTo'>rMoveTo</a>(<a href='undocumented#SkScalar'>SkScalar</a> dx, <a href='undocumented#SkScalar'>SkScalar</a> dy)
|
|
</pre>
|
|
|
|
Adds beginning of <a href='#Contour'>Contour</a> relative to <a href='#Last_Point'>Last Point</a>.
|
|
If <a href='#Path'>Path</a> is empty, starts <a href='#Contour'>Contour</a> at (<a href='#SkPath_rMoveTo_dx'>dx</a>, <a href='#SkPath_rMoveTo_dy'>dy</a>).
|
|
Otherwise, start <a href='#Contour'>Contour</a> at <a href='#Last_Point'>Last Point</a> offset by (<a href='#SkPath_rMoveTo_dx'>dx</a>, <a href='#SkPath_rMoveTo_dy'>dy</a>).
|
|
Function name stands for "relative move to".
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_rMoveTo_dx'><code><strong>dx</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to <a href='#Contour'>Contour</a> start on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rMoveTo_dy'><code><strong>dy</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to <a href='#Contour'>Contour</a> start on y-axis</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="63e32dec4b2d8440b427f368bf8313a4"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Contour'>Contour</a> <a href='#SkPath_lineTo'>lineTo</a><sup><a href='#SkPath_lineTo_2'>[2]</a></sup> <a href='#SkPath_moveTo'>moveTo</a><sup><a href='#SkPath_moveTo_2'>[2]</a></sup> <a href='#SkPath_quadTo'>quadTo</a><sup><a href='#SkPath_quadTo_2'>[2]</a></sup> <a href='#SkPath_conicTo'>conicTo</a><sup><a href='#SkPath_conicTo_2'>[2]</a></sup> <a href='#SkPath_cubicTo'>cubicTo</a><sup><a href='#SkPath_cubicTo_2'>[2]</a></sup> <a href='#SkPath_close'>close</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_lineTo'></a>
|
|
## lineTo
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_lineTo'>lineTo</a>(<a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y)
|
|
</pre>
|
|
|
|
Adds <a href='undocumented#Line'>Line</a> from <a href='#Last_Point'>Last Point</a> to (<a href='#SkPath_lineTo_x'>x</a>, <a href='#SkPath_lineTo_y'>y</a>). If <a href='#Path'>Path</a> is empty, or last <a href='#SkPath_Verb'>Verb</a> is
|
|
<a href='#SkPath_kClose_Verb'>kClose Verb</a>, <a href='#Last_Point'>Last Point</a> is set to (0, 0) before adding <a href='undocumented#Line'>Line</a>.
|
|
|
|
<a href='#SkPath_lineTo'>lineTo</a> appends <a href='#SkPath_kMove_Verb'>kMove Verb</a> to <a href='#Verb_Array'>Verb Array</a> and (0, 0) to <a href='#Point_Array'>Point Array</a>, if needed.
|
|
<a href='#SkPath_lineTo'>lineTo</a> then appends <a href='#SkPath_kLine_Verb'>kLine Verb</a> to <a href='#Verb_Array'>Verb Array</a> and (<a href='#SkPath_lineTo_x'>x</a>, <a href='#SkPath_lineTo_y'>y</a>) to <a href='#Point_Array'>Point Array</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_lineTo_x'><code><strong>x</strong></code></a></td>
|
|
<td>end of added <a href='undocumented#Line'>Line</a> in <a href='#SkPath_lineTo_x'>x</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_lineTo_y'><code><strong>y</strong></code></a></td>
|
|
<td>end of added <a href='undocumented#Line'>Line</a> in <a href='#SkPath_lineTo_y'>y</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="e311cdd451edacec33b50cc22a4dd5dc"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Contour'>Contour</a> <a href='#SkPath_moveTo'>moveTo</a><sup><a href='#SkPath_moveTo_2'>[2]</a></sup> <a href='#SkPath_rLineTo'>rLineTo</a> <a href='#SkPath_addRect'>addRect</a><sup><a href='#SkPath_addRect_2'>[2]</a></sup><sup><a href='#SkPath_addRect_3'>[3]</a></sup>
|
|
|
|
---
|
|
|
|
<a name='SkPath_lineTo_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_lineTo'>lineTo</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p)
|
|
</pre>
|
|
|
|
Adds <a href='undocumented#Line'>Line</a> from <a href='#Last_Point'>Last Point</a> to <a href='SkPoint_Reference#Point'>Point</a> <a href='#SkPath_lineTo_2_p'>p</a>. If <a href='#Path'>Path</a> is empty, or last <a href='#SkPath_Verb'>Verb</a> is
|
|
<a href='#SkPath_kClose_Verb'>kClose Verb</a>, <a href='#Last_Point'>Last Point</a> is set to (0, 0) before adding <a href='undocumented#Line'>Line</a>.
|
|
|
|
<a href='#SkPath_lineTo'>lineTo</a> first appends <a href='#SkPath_kMove_Verb'>kMove Verb</a> to <a href='#Verb_Array'>Verb Array</a> and (0, 0) to <a href='#Point_Array'>Point Array</a>, if needed.
|
|
<a href='#SkPath_lineTo'>lineTo</a> then appends <a href='#SkPath_kLine_Verb'>kLine Verb</a> to <a href='#Verb_Array'>Verb Array</a> and <a href='SkPoint_Reference#Point'>Point</a> <a href='#SkPath_lineTo_2_p'>p</a> to <a href='#Point_Array'>Point Array</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_lineTo_2_p'><code><strong>p</strong></code></a></td>
|
|
<td>end <a href='SkPoint_Reference#Point'>Point</a> of added <a href='undocumented#Line'>Line</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="41001546a7f7927d08e5a818bcc304f5"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Contour'>Contour</a> <a href='#SkPath_moveTo'>moveTo</a><sup><a href='#SkPath_moveTo_2'>[2]</a></sup> <a href='#SkPath_rLineTo'>rLineTo</a> <a href='#SkPath_addRect'>addRect</a><sup><a href='#SkPath_addRect_2'>[2]</a></sup><sup><a href='#SkPath_addRect_3'>[3]</a></sup>
|
|
|
|
---
|
|
|
|
<a name='SkPath_rLineTo'></a>
|
|
## rLineTo
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_rLineTo'>rLineTo</a>(<a href='undocumented#SkScalar'>SkScalar</a> dx, <a href='undocumented#SkScalar'>SkScalar</a> dy)
|
|
</pre>
|
|
|
|
Adds <a href='undocumented#Line'>Line</a> from <a href='#Last_Point'>Last Point</a> to <a href='SkPoint_Reference#Vector'>Vector</a> (<a href='#SkPath_rLineTo_dx'>dx</a>, <a href='#SkPath_rLineTo_dy'>dy</a>). If <a href='#Path'>Path</a> is empty, or last <a href='#SkPath_Verb'>Verb</a> is
|
|
<a href='#SkPath_kClose_Verb'>kClose Verb</a>, <a href='#Last_Point'>Last Point</a> is set to (0, 0) before adding <a href='undocumented#Line'>Line</a>.
|
|
|
|
Appends <a href='#SkPath_kMove_Verb'>kMove Verb</a> to <a href='#Verb_Array'>Verb Array</a> and (0, 0) to <a href='#Point_Array'>Point Array</a>, if needed;
|
|
then appends <a href='#SkPath_kLine_Verb'>kLine Verb</a> to <a href='#Verb_Array'>Verb Array</a> and <a href='undocumented#Line'>Line</a> end to <a href='#Point_Array'>Point Array</a>.
|
|
<a href='undocumented#Line'>Line</a> end is <a href='#Last_Point'>Last Point</a> plus <a href='SkPoint_Reference#Vector'>Vector</a> (<a href='#SkPath_rLineTo_dx'>dx</a>, <a href='#SkPath_rLineTo_dy'>dy</a>).
|
|
Function name stands for "relative line to".
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_rLineTo_dx'><code><strong>dx</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to <a href='undocumented#Line'>Line</a> end on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rLineTo_dy'><code><strong>dy</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to <a href='undocumented#Line'>Line</a> end on y-axis</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="6e0be0766b8ca320da51640326e608b3"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Contour'>Contour</a> <a href='#SkPath_moveTo'>moveTo</a><sup><a href='#SkPath_moveTo_2'>[2]</a></sup> <a href='#SkPath_lineTo'>lineTo</a><sup><a href='#SkPath_lineTo_2'>[2]</a></sup> <a href='#SkPath_addRect'>addRect</a><sup><a href='#SkPath_addRect_2'>[2]</a></sup><sup><a href='#SkPath_addRect_3'>[3]</a></sup>
|
|
|
|
---
|
|
|
|
## <a name='Quad'>Quad</a>
|
|
|
|
<a href='#Quad'>Quad</a> describes a quadratic Bezier, a second-order curve identical to a section
|
|
of a parabola. <a href='#Quad'>Quad</a> begins at a start <a href='SkPoint_Reference#Point'>Point</a>, curves towards a control <a href='SkPoint_Reference#Point'>Point</a>,
|
|
and then curves to an end <a href='SkPoint_Reference#Point'>Point</a>.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="78ad51fa1cd33eb84a6f99061e56e067"></fiddle-embed></div>
|
|
|
|
<a href='#Quad'>Quad</a> is a special case of <a href='#Conic'>Conic</a> where <a href='#Conic_Weight'>Conic Weight</a> is set to one.
|
|
|
|
<a href='#Quad'>Quad</a> is always contained by the triangle connecting its three <a href='SkPoint_Reference#Point'>Points</a>. <a href='#Quad'>Quad</a>
|
|
begins tangent to the line between start <a href='SkPoint_Reference#Point'>Point</a> and control <a href='SkPoint_Reference#Point'>Point</a>, and ends
|
|
tangent to the line between control <a href='SkPoint_Reference#Point'>Point</a> and end <a href='SkPoint_Reference#Point'>Point</a>.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="4082f66a42df11bb20462b232b156bb6"></fiddle-embed></div>
|
|
|
|
<a name='SkPath_quadTo'></a>
|
|
## quadTo
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_quadTo'>quadTo</a>(<a href='undocumented#SkScalar'>SkScalar</a> x1, <a href='undocumented#SkScalar'>SkScalar</a> y1, <a href='undocumented#SkScalar'>SkScalar</a> x2, <a href='undocumented#SkScalar'>SkScalar</a> y2)
|
|
</pre>
|
|
|
|
Adds <a href='#Quad'>Quad</a> from <a href='#Last_Point'>Last Point</a> towards (<a href='#SkPath_quadTo_x1'>x1</a>, <a href='#SkPath_quadTo_y1'>y1</a>), to (<a href='#SkPath_quadTo_x2'>x2</a>, <a href='#SkPath_quadTo_y2'>y2</a>).
|
|
If <a href='#Path'>Path</a> is empty, or last <a href='#SkPath_Verb'>Verb</a> is <a href='#SkPath_kClose_Verb'>kClose Verb</a>, <a href='#Last_Point'>Last Point</a> is set to (0, 0)
|
|
before adding <a href='#Quad'>Quad</a>.
|
|
|
|
Appends <a href='#SkPath_kMove_Verb'>kMove Verb</a> to <a href='#Verb_Array'>Verb Array</a> and (0, 0) to <a href='#Point_Array'>Point Array</a>, if needed;
|
|
then appends <a href='#SkPath_kQuad_Verb'>kQuad Verb</a> to <a href='#Verb_Array'>Verb Array</a>; and (<a href='#SkPath_quadTo_x1'>x1</a>, <a href='#SkPath_quadTo_y1'>y1</a>), (<a href='#SkPath_quadTo_x2'>x2</a>, <a href='#SkPath_quadTo_y2'>y2</a>)
|
|
to <a href='#Point_Array'>Point Array</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_quadTo_x1'><code><strong>x1</strong></code></a></td>
|
|
<td>control <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Quad'>Quad</a> in x</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_quadTo_y1'><code><strong>y1</strong></code></a></td>
|
|
<td>control <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Quad'>Quad</a> in y</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_quadTo_x2'><code><strong>x2</strong></code></a></td>
|
|
<td>end <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Quad'>Quad</a> in x</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_quadTo_y2'><code><strong>y2</strong></code></a></td>
|
|
<td>end <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Quad'>Quad</a> in y</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="60ee3eb747474f5781b0f0dd3a17a866"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Contour'>Contour</a> <a href='#SkPath_moveTo'>moveTo</a><sup><a href='#SkPath_moveTo_2'>[2]</a></sup> <a href='#SkPath_conicTo'>conicTo</a><sup><a href='#SkPath_conicTo_2'>[2]</a></sup> <a href='#SkPath_rQuadTo'>rQuadTo</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_quadTo_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_quadTo'>quadTo</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p1, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p2)
|
|
</pre>
|
|
|
|
Adds <a href='#Quad'>Quad</a> from <a href='#Last_Point'>Last Point</a> towards <a href='SkPoint_Reference#Point'>Point</a> <a href='#SkPath_quadTo_2_p1'>p1</a>, to <a href='SkPoint_Reference#Point'>Point</a> <a href='#SkPath_quadTo_2_p2'>p2</a>.
|
|
If <a href='#Path'>Path</a> is empty, or last <a href='#SkPath_Verb'>Verb</a> is <a href='#SkPath_kClose_Verb'>kClose Verb</a>, <a href='#Last_Point'>Last Point</a> is set to (0, 0)
|
|
before adding <a href='#Quad'>Quad</a>.
|
|
|
|
Appends <a href='#SkPath_kMove_Verb'>kMove Verb</a> to <a href='#Verb_Array'>Verb Array</a> and (0, 0) to <a href='#Point_Array'>Point Array</a>, if needed;
|
|
then appends <a href='#SkPath_kQuad_Verb'>kQuad Verb</a> to <a href='#Verb_Array'>Verb Array</a>; and <a href='SkPoint_Reference#Point'>Points</a> <a href='#SkPath_quadTo_2_p1'>p1</a>, <a href='#SkPath_quadTo_2_p2'>p2</a>
|
|
to <a href='#Point_Array'>Point Array</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_quadTo_2_p1'><code><strong>p1</strong></code></a></td>
|
|
<td>control <a href='SkPoint_Reference#Point'>Point</a> of added <a href='#Quad'>Quad</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_quadTo_2_p2'><code><strong>p2</strong></code></a></td>
|
|
<td>end <a href='SkPoint_Reference#Point'>Point</a> of added <a href='#Quad'>Quad</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="82621c4df8da1e589d9e627494067826"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Contour'>Contour</a> <a href='#SkPath_moveTo'>moveTo</a><sup><a href='#SkPath_moveTo_2'>[2]</a></sup> <a href='#SkPath_conicTo'>conicTo</a><sup><a href='#SkPath_conicTo_2'>[2]</a></sup> <a href='#SkPath_rQuadTo'>rQuadTo</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_rQuadTo'></a>
|
|
## rQuadTo
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_rQuadTo'>rQuadTo</a>(<a href='undocumented#SkScalar'>SkScalar</a> dx1, <a href='undocumented#SkScalar'>SkScalar</a> dy1, <a href='undocumented#SkScalar'>SkScalar</a> dx2, <a href='undocumented#SkScalar'>SkScalar</a> dy2)
|
|
</pre>
|
|
|
|
Adds <a href='#Quad'>Quad</a> from <a href='#Last_Point'>Last Point</a> towards <a href='SkPoint_Reference#Vector'>Vector</a> (<a href='#SkPath_rQuadTo_dx1'>dx1</a>, <a href='#SkPath_rQuadTo_dy1'>dy1</a>), to <a href='SkPoint_Reference#Vector'>Vector</a> (<a href='#SkPath_rQuadTo_dx2'>dx2</a>, <a href='#SkPath_rQuadTo_dy2'>dy2</a>).
|
|
If <a href='#Path'>Path</a> is empty, or last <a href='#SkPath_Verb'>Verb</a>
|
|
is <a href='#SkPath_kClose_Verb'>kClose Verb</a>, <a href='#Last_Point'>Last Point</a> is set to (0, 0) before adding <a href='#Quad'>Quad</a>.
|
|
|
|
Appends <a href='#SkPath_kMove_Verb'>kMove Verb</a> to <a href='#Verb_Array'>Verb Array</a> and (0, 0) to <a href='#Point_Array'>Point Array</a>,
|
|
if needed; then appends <a href='#SkPath_kQuad_Verb'>kQuad Verb</a> to <a href='#Verb_Array'>Verb Array</a>; and appends <a href='#Quad'>Quad</a>
|
|
control and <a href='#Quad'>Quad</a> end to <a href='#Point_Array'>Point Array</a>.
|
|
<a href='#Quad'>Quad</a> control is <a href='#Last_Point'>Last Point</a> plus <a href='SkPoint_Reference#Vector'>Vector</a> (<a href='#SkPath_rQuadTo_dx1'>dx1</a>, <a href='#SkPath_rQuadTo_dy1'>dy1</a>).
|
|
<a href='#Quad'>Quad</a> end is <a href='#Last_Point'>Last Point</a> plus <a href='SkPoint_Reference#Vector'>Vector</a> (<a href='#SkPath_rQuadTo_dx2'>dx2</a>, <a href='#SkPath_rQuadTo_dy2'>dy2</a>).
|
|
Function name stands for "relative quad to".
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_rQuadTo_dx1'><code><strong>dx1</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to <a href='#Quad'>Quad</a> control on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rQuadTo_dy1'><code><strong>dy1</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to <a href='#Quad'>Quad</a> control on y-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rQuadTo_dx2'><code><strong>dx2</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to <a href='#Quad'>Quad</a> end on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rQuadTo_dy2'><code><strong>dy2</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to <a href='#Quad'>Quad</a> end on y-axis</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="1c1f4cdef1c572c9aa8fdf3e461191d0"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Contour'>Contour</a> <a href='#SkPath_moveTo'>moveTo</a><sup><a href='#SkPath_moveTo_2'>[2]</a></sup> <a href='#SkPath_conicTo'>conicTo</a><sup><a href='#SkPath_conicTo_2'>[2]</a></sup> <a href='#SkPath_quadTo'>quadTo</a><sup><a href='#SkPath_quadTo_2'>[2]</a></sup>
|
|
|
|
---
|
|
|
|
## <a name='Conic'>Conic</a>
|
|
|
|
<a href='#Conic'>Conic</a> describes a conical section: a piece of an ellipse, or a piece of a
|
|
parabola, or a piece of a hyperbola. <a href='#Conic'>Conic</a> begins at a start <a href='SkPoint_Reference#Point'>Point</a>,
|
|
curves towards a control <a href='SkPoint_Reference#Point'>Point</a>, and then curves to an end <a href='SkPoint_Reference#Point'>Point</a>. The influence
|
|
of the control <a href='SkPoint_Reference#Point'>Point</a> is determined by <a href='#Conic_Weight'>Conic Weight</a>.
|
|
|
|
Each <a href='#Conic'>Conic</a> in <a href='#Path'>Path</a> adds two <a href='SkPoint_Reference#Point'>Points</a> and one <a href='#Conic_Weight'>Conic Weight</a>. <a href='#Conic_Weight'>Conic Weights</a> in <a href='#Path'>Path</a>
|
|
may be inspected with <a href='#SkPath_Iter'>Iter</a>, or with <a href='#SkPath_RawIter'>RawIter</a>.
|
|
|
|
## <a name='Conic_Weight'>Conic Weight</a>
|
|
|
|
<a href='#Conic_Weight'>Weight</a> determines both the strength of the control <a href='SkPoint_Reference#Point'>Point</a> and the type of <a href='#Conic'>Conic</a>.
|
|
<a href='#Conic_Weight'>Weight</a> varies from zero to infinity. At zero, <a href='#Conic_Weight'>Weight</a> causes the control <a href='SkPoint_Reference#Point'>Point</a> to
|
|
have no effect; <a href='#Conic'>Conic</a> is identical to a line segment from start <a href='SkPoint_Reference#Point'>Point</a> to end
|
|
point. If <a href='#Conic_Weight'>Weight</a> is less than one, <a href='#Conic'>Conic</a> follows an elliptical arc.
|
|
If <a href='#Conic_Weight'>Weight</a> is exactly one, then <a href='#Conic'>Conic</a> is identical to <a href='#Quad'>Quad</a>; <a href='#Conic'>Conic</a> follows a
|
|
parabolic arc. If <a href='#Conic_Weight'>Weight</a> is greater than one, <a href='#Conic'>Conic</a> follows a hyperbolic
|
|
arc. If <a href='#Conic_Weight'>Weight</a> is infinity, <a href='#Conic'>Conic</a> is identical to two line segments, connecting
|
|
start <a href='SkPoint_Reference#Point'>Point</a> to control <a href='SkPoint_Reference#Point'>Point</a>, and control <a href='SkPoint_Reference#Point'>Point</a> to end <a href='SkPoint_Reference#Point'>Point</a>.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="2aadded3d20dfef34d1c8abe28c7bc8d"><div>When <a href='#Conic_Weight'>Conic Weight</a> is one, <a href='#Quad'>Quad</a> is added to path; the two are identical.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
move {0, 0},
|
|
quad {0, 0}, {20, 30}, {50, 60},
|
|
done
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
If weight is less than one, <a href='#Conic'>Conic</a> is an elliptical segment.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="e88f554efacfa9f75f270fb1c0add5b4"><div>A 90 degree circular arc has the weight1 / sqrt(2).
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
move {0, 0},
|
|
conic {0, 0}, {20, 0}, {20, 20}, weight = 0.707107
|
|
done
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
If weight is greater than one, <a href='#Conic'>Conic</a> is a hyperbolic segment. As weight gets large,
|
|
a hyperbolic segment can be approximated by straight lines connecting the
|
|
control <a href='SkPoint_Reference#Point'>Point</a> with the end <a href='SkPoint_Reference#Point'>Points</a>.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="6fb11419e99297fe2fe666c296117fb9">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
move {0, 0},
|
|
line {0, 0}, {20, 0},
|
|
line {20, 0}, {20, 20},
|
|
done
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
<a name='SkPath_conicTo'></a>
|
|
## conicTo
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_conicTo'>conicTo</a>(<a href='undocumented#SkScalar'>SkScalar</a> x1, <a href='undocumented#SkScalar'>SkScalar</a> y1, <a href='undocumented#SkScalar'>SkScalar</a> x2, <a href='undocumented#SkScalar'>SkScalar</a> y2, <a href='undocumented#SkScalar'>SkScalar</a> w)
|
|
</pre>
|
|
|
|
Adds <a href='#Conic'>Conic</a> from <a href='#Last_Point'>Last Point</a> towards (<a href='#SkPath_conicTo_x1'>x1</a>, <a href='#SkPath_conicTo_y1'>y1</a>), to (<a href='#SkPath_conicTo_x2'>x2</a>, <a href='#SkPath_conicTo_y2'>y2</a>), weighted by <a href='#SkPath_conicTo_w'>w</a>.
|
|
If <a href='#Path'>Path</a> is empty, or last <a href='#SkPath_Verb'>Verb</a> is <a href='#SkPath_kClose_Verb'>kClose Verb</a>, <a href='#Last_Point'>Last Point</a> is set to (0, 0)
|
|
before adding <a href='#Conic'>Conic</a>.
|
|
|
|
Appends <a href='#SkPath_kMove_Verb'>kMove Verb</a> to <a href='#Verb_Array'>Verb Array</a> and (0, 0) to <a href='#Point_Array'>Point Array</a>, if needed.
|
|
|
|
If <a href='#SkPath_conicTo_w'>w</a> is finite and not one, appends <a href='#SkPath_kConic_Verb'>kConic Verb</a> to <a href='#Verb_Array'>Verb Array</a>;
|
|
and (<a href='#SkPath_conicTo_x1'>x1</a>, <a href='#SkPath_conicTo_y1'>y1</a>), (<a href='#SkPath_conicTo_x2'>x2</a>, <a href='#SkPath_conicTo_y2'>y2</a>) to <a href='#Point_Array'>Point Array</a>; and <a href='#SkPath_conicTo_w'>w</a> to <a href='#Conic_Weight'>Conic Weights</a>.
|
|
|
|
If <a href='#SkPath_conicTo_w'>w</a> is one, appends <a href='#SkPath_kQuad_Verb'>kQuad Verb</a> to <a href='#Verb_Array'>Verb Array</a>, and
|
|
(<a href='#SkPath_conicTo_x1'>x1</a>, <a href='#SkPath_conicTo_y1'>y1</a>), (<a href='#SkPath_conicTo_x2'>x2</a>, <a href='#SkPath_conicTo_y2'>y2</a>) to <a href='#Point_Array'>Point Array</a>.
|
|
|
|
If <a href='#SkPath_conicTo_w'>w</a> is not finite, appends <a href='#SkPath_kLine_Verb'>kLine Verb</a> twice to <a href='#Verb_Array'>Verb Array</a>, and
|
|
(<a href='#SkPath_conicTo_x1'>x1</a>, <a href='#SkPath_conicTo_y1'>y1</a>), (<a href='#SkPath_conicTo_x2'>x2</a>, <a href='#SkPath_conicTo_y2'>y2</a>) to <a href='#Point_Array'>Point Array</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_conicTo_x1'><code><strong>x1</strong></code></a></td>
|
|
<td>control <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Conic'>Conic</a> in x</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_conicTo_y1'><code><strong>y1</strong></code></a></td>
|
|
<td>control <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Conic'>Conic</a> in y</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_conicTo_x2'><code><strong>x2</strong></code></a></td>
|
|
<td>end <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Conic'>Conic</a> in x</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_conicTo_y2'><code><strong>y2</strong></code></a></td>
|
|
<td>end <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Conic'>Conic</a> in y</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_conicTo_w'><code><strong>w</strong></code></a></td>
|
|
<td>weight of added <a href='#Conic'>Conic</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="358d9b6060b528b0923c007420f09c13"><div>As weight increases, curve is pulled towards control point.
|
|
The bottom two curves are elliptical; the next is parabolic; the
|
|
top curve is hyperbolic.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_rConicTo'>rConicTo</a> <a href='#SkPath_arcTo'>arcTo</a><sup><a href='#SkPath_arcTo_2'>[2]</a></sup><sup><a href='#SkPath_arcTo_3'>[3]</a></sup><sup><a href='#SkPath_arcTo_4'>[4]</a></sup><sup><a href='#SkPath_arcTo_5'>[5]</a></sup> <a href='#SkPath_addArc'>addArc</a> <a href='#SkPath_quadTo'>quadTo</a><sup><a href='#SkPath_quadTo_2'>[2]</a></sup>
|
|
|
|
---
|
|
|
|
<a name='SkPath_conicTo_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_conicTo'>conicTo</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p1, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p2, <a href='undocumented#SkScalar'>SkScalar</a> w)
|
|
</pre>
|
|
|
|
Adds <a href='#Conic'>Conic</a> from <a href='#Last_Point'>Last Point</a> towards <a href='SkPoint_Reference#Point'>Point</a> <a href='#SkPath_conicTo_2_p1'>p1</a>, to <a href='SkPoint_Reference#Point'>Point</a> <a href='#SkPath_conicTo_2_p2'>p2</a>, weighted by <a href='#SkPath_conicTo_2_w'>w</a>.
|
|
If <a href='#Path'>Path</a> is empty, or last <a href='#SkPath_Verb'>Verb</a> is <a href='#SkPath_kClose_Verb'>kClose Verb</a>, <a href='#Last_Point'>Last Point</a> is set to (0, 0)
|
|
before adding <a href='#Conic'>Conic</a>.
|
|
|
|
Appends <a href='#SkPath_kMove_Verb'>kMove Verb</a> to <a href='#Verb_Array'>Verb Array</a> and (0, 0) to <a href='#Point_Array'>Point Array</a>, if needed.
|
|
|
|
If <a href='#SkPath_conicTo_2_w'>w</a> is finite and not one, appends <a href='#SkPath_kConic_Verb'>kConic Verb</a> to <a href='#Verb_Array'>Verb Array</a>;
|
|
and <a href='SkPoint_Reference#Point'>Points</a> <a href='#SkPath_conicTo_2_p1'>p1</a>, <a href='#SkPath_conicTo_2_p2'>p2</a> to <a href='#Point_Array'>Point Array</a>; and <a href='#SkPath_conicTo_2_w'>w</a> to <a href='#Conic_Weight'>Conic Weights</a>.
|
|
|
|
If <a href='#SkPath_conicTo_2_w'>w</a> is one, appends <a href='#SkPath_kQuad_Verb'>kQuad Verb</a> to <a href='#Verb_Array'>Verb Array</a>, and <a href='SkPoint_Reference#Point'>Points</a> <a href='#SkPath_conicTo_2_p1'>p1</a>, <a href='#SkPath_conicTo_2_p2'>p2</a>
|
|
to <a href='#Point_Array'>Point Array</a>.
|
|
|
|
If <a href='#SkPath_conicTo_2_w'>w</a> is not finite, appends <a href='#SkPath_kLine_Verb'>kLine Verb</a> twice to <a href='#Verb_Array'>Verb Array</a>, and
|
|
<a href='SkPoint_Reference#Point'>Points</a> <a href='#SkPath_conicTo_2_p1'>p1</a>, <a href='#SkPath_conicTo_2_p2'>p2</a> to <a href='#Point_Array'>Point Array</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_conicTo_2_p1'><code><strong>p1</strong></code></a></td>
|
|
<td>control <a href='SkPoint_Reference#Point'>Point</a> of added <a href='#Conic'>Conic</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_conicTo_2_p2'><code><strong>p2</strong></code></a></td>
|
|
<td>end <a href='SkPoint_Reference#Point'>Point</a> of added <a href='#Conic'>Conic</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_conicTo_2_w'><code><strong>w</strong></code></a></td>
|
|
<td>weight of added <a href='#Conic'>Conic</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="22d25e03b19d5bae92118877e462361b"><div><a href='#Conic'>Conics</a> and arcs use identical representations. As the arc sweep increases
|
|
the <a href='#Conic_Weight'>Conic Weight</a> also increases, but remains smaller than one.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_rConicTo'>rConicTo</a> <a href='#SkPath_arcTo'>arcTo</a><sup><a href='#SkPath_arcTo_2'>[2]</a></sup><sup><a href='#SkPath_arcTo_3'>[3]</a></sup><sup><a href='#SkPath_arcTo_4'>[4]</a></sup><sup><a href='#SkPath_arcTo_5'>[5]</a></sup> <a href='#SkPath_addArc'>addArc</a> <a href='#SkPath_quadTo'>quadTo</a><sup><a href='#SkPath_quadTo_2'>[2]</a></sup>
|
|
|
|
---
|
|
|
|
<a name='SkPath_rConicTo'></a>
|
|
## rConicTo
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_rConicTo'>rConicTo</a>(<a href='undocumented#SkScalar'>SkScalar</a> dx1, <a href='undocumented#SkScalar'>SkScalar</a> dy1, <a href='undocumented#SkScalar'>SkScalar</a> dx2, <a href='undocumented#SkScalar'>SkScalar</a> dy2, <a href='undocumented#SkScalar'>SkScalar</a> w)
|
|
</pre>
|
|
|
|
Adds <a href='#Conic'>Conic</a> from <a href='#Last_Point'>Last Point</a> towards <a href='SkPoint_Reference#Vector'>Vector</a> (<a href='#SkPath_rConicTo_dx1'>dx1</a>, <a href='#SkPath_rConicTo_dy1'>dy1</a>), to <a href='SkPoint_Reference#Vector'>Vector</a> (<a href='#SkPath_rConicTo_dx2'>dx2</a>, <a href='#SkPath_rConicTo_dy2'>dy2</a>),
|
|
weighted by <a href='#SkPath_rConicTo_w'>w</a>. If <a href='#Path'>Path</a> is empty, or last <a href='#SkPath_Verb'>Verb</a>
|
|
is <a href='#SkPath_kClose_Verb'>kClose Verb</a>, <a href='#Last_Point'>Last Point</a> is set to (0, 0) before adding <a href='#Conic'>Conic</a>.
|
|
|
|
Appends <a href='#SkPath_kMove_Verb'>kMove Verb</a> to <a href='#Verb_Array'>Verb Array</a> and (0, 0) to <a href='#Point_Array'>Point Array</a>,
|
|
if needed.
|
|
|
|
If <a href='#SkPath_rConicTo_w'>w</a> is finite and not one, next appends <a href='#SkPath_kConic_Verb'>kConic Verb</a> to <a href='#Verb_Array'>Verb Array</a>,
|
|
and <a href='#SkPath_rConicTo_w'>w</a> is recorded as <a href='#Conic_Weight'>Conic Weight</a>; otherwise, if <a href='#SkPath_rConicTo_w'>w</a> is one, appends
|
|
<a href='#SkPath_kQuad_Verb'>kQuad Verb</a> to <a href='#Verb_Array'>Verb Array</a>; or if <a href='#SkPath_rConicTo_w'>w</a> is not finite, appends <a href='#SkPath_kLine_Verb'>kLine Verb</a>
|
|
twice to <a href='#Verb_Array'>Verb Array</a>.
|
|
|
|
In all cases appends <a href='SkPoint_Reference#Point'>Points</a> control and end to <a href='#Point_Array'>Point Array</a>.
|
|
control is <a href='#Last_Point'>Last Point</a> plus <a href='SkPoint_Reference#Vector'>Vector</a> (<a href='#SkPath_rConicTo_dx1'>dx1</a>, <a href='#SkPath_rConicTo_dy1'>dy1</a>).
|
|
end is <a href='#Last_Point'>Last Point</a> plus <a href='SkPoint_Reference#Vector'>Vector</a> (<a href='#SkPath_rConicTo_dx2'>dx2</a>, <a href='#SkPath_rConicTo_dy2'>dy2</a>).
|
|
|
|
Function name stands for "relative conic to".
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_rConicTo_dx1'><code><strong>dx1</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to <a href='#Conic'>Conic</a> control on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rConicTo_dy1'><code><strong>dy1</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to <a href='#Conic'>Conic</a> control on y-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rConicTo_dx2'><code><strong>dx2</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to <a href='#Conic'>Conic</a> end on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rConicTo_dy2'><code><strong>dy2</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to <a href='#Conic'>Conic</a> end on y-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rConicTo_w'><code><strong>w</strong></code></a></td>
|
|
<td>weight of added <a href='#Conic'>Conic</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="3d52763e7c0e20c0b1d484a0afa622d2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_conicTo'>conicTo</a><sup><a href='#SkPath_conicTo_2'>[2]</a></sup> <a href='#SkPath_arcTo'>arcTo</a><sup><a href='#SkPath_arcTo_2'>[2]</a></sup><sup><a href='#SkPath_arcTo_3'>[3]</a></sup><sup><a href='#SkPath_arcTo_4'>[4]</a></sup><sup><a href='#SkPath_arcTo_5'>[5]</a></sup> <a href='#SkPath_addArc'>addArc</a> <a href='#SkPath_quadTo'>quadTo</a><sup><a href='#SkPath_quadTo_2'>[2]</a></sup>
|
|
|
|
---
|
|
|
|
## <a name='Cubic'>Cubic</a>
|
|
|
|
<a href='#Cubic'>Cubic</a> describes a <a href='undocumented#Bezier_Curve'>Bezier Curve</a> segment described by a third-order polynomial.
|
|
<a href='#Cubic'>Cubic</a> begins at a start <a href='SkPoint_Reference#Point'>Point</a>, curving towards the first control <a href='SkPoint_Reference#Point'>Point</a>;
|
|
and curves from the end <a href='SkPoint_Reference#Point'>Point</a> towards the second control <a href='SkPoint_Reference#Point'>Point</a>.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="466445ed991d86de08587066392d654a"></fiddle-embed></div>
|
|
|
|
<a name='SkPath_cubicTo'></a>
|
|
## cubicTo
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_cubicTo'>cubicTo</a>(<a href='undocumented#SkScalar'>SkScalar</a> x1, <a href='undocumented#SkScalar'>SkScalar</a> y1, <a href='undocumented#SkScalar'>SkScalar</a> x2, <a href='undocumented#SkScalar'>SkScalar</a> y2, <a href='undocumented#SkScalar'>SkScalar</a> x3, <a href='undocumented#SkScalar'>SkScalar</a> y3)
|
|
</pre>
|
|
|
|
Adds <a href='#Cubic'>Cubic</a> from <a href='#Last_Point'>Last Point</a> towards (<a href='#SkPath_cubicTo_x1'>x1</a>, <a href='#SkPath_cubicTo_y1'>y1</a>), then towards (<a href='#SkPath_cubicTo_x2'>x2</a>, <a href='#SkPath_cubicTo_y2'>y2</a>), ending at
|
|
(<a href='#SkPath_cubicTo_x3'>x3</a>, <a href='#SkPath_cubicTo_y3'>y3</a>). If <a href='#Path'>Path</a> is empty, or last <a href='#SkPath_Verb'>Verb</a> is <a href='#SkPath_kClose_Verb'>kClose Verb</a>, <a href='#Last_Point'>Last Point</a> is set to
|
|
(0, 0) before adding <a href='#Cubic'>Cubic</a>.
|
|
|
|
Appends <a href='#SkPath_kMove_Verb'>kMove Verb</a> to <a href='#Verb_Array'>Verb Array</a> and (0, 0) to <a href='#Point_Array'>Point Array</a>, if needed;
|
|
then appends <a href='#SkPath_kCubic_Verb'>kCubic Verb</a> to <a href='#Verb_Array'>Verb Array</a>; and (<a href='#SkPath_cubicTo_x1'>x1</a>, <a href='#SkPath_cubicTo_y1'>y1</a>), (<a href='#SkPath_cubicTo_x2'>x2</a>, <a href='#SkPath_cubicTo_y2'>y2</a>), (<a href='#SkPath_cubicTo_x3'>x3</a>, <a href='#SkPath_cubicTo_y3'>y3</a>)
|
|
to <a href='#Point_Array'>Point Array</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_cubicTo_x1'><code><strong>x1</strong></code></a></td>
|
|
<td>first control <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Cubic'>Cubic</a> in x</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_cubicTo_y1'><code><strong>y1</strong></code></a></td>
|
|
<td>first control <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Cubic'>Cubic</a> in y</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_cubicTo_x2'><code><strong>x2</strong></code></a></td>
|
|
<td>second control <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Cubic'>Cubic</a> in x</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_cubicTo_y2'><code><strong>y2</strong></code></a></td>
|
|
<td>second control <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Cubic'>Cubic</a> in y</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_cubicTo_x3'><code><strong>x3</strong></code></a></td>
|
|
<td>end <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Cubic'>Cubic</a> in x</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_cubicTo_y3'><code><strong>y3</strong></code></a></td>
|
|
<td>end <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Cubic'>Cubic</a> in y</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="3e476378e3e0550ab134bbaf61112d98"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Contour'>Contour</a> <a href='#SkPath_moveTo'>moveTo</a><sup><a href='#SkPath_moveTo_2'>[2]</a></sup> <a href='#SkPath_rCubicTo'>rCubicTo</a> <a href='#SkPath_quadTo'>quadTo</a><sup><a href='#SkPath_quadTo_2'>[2]</a></sup>
|
|
|
|
---
|
|
|
|
<a name='SkPath_cubicTo_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_cubicTo'>cubicTo</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p1, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p2, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p3)
|
|
</pre>
|
|
|
|
Adds <a href='#Cubic'>Cubic</a> from <a href='#Last_Point'>Last Point</a> towards <a href='SkPoint_Reference#Point'>Point</a> <a href='#SkPath_cubicTo_2_p1'>p1</a>, then towards <a href='SkPoint_Reference#Point'>Point</a> <a href='#SkPath_cubicTo_2_p2'>p2</a>, ending at
|
|
<a href='SkPoint_Reference#Point'>Point</a> <a href='#SkPath_cubicTo_2_p3'>p3</a>. If <a href='#Path'>Path</a> is empty, or last <a href='#SkPath_Verb'>Verb</a> is <a href='#SkPath_kClose_Verb'>kClose Verb</a>, <a href='#Last_Point'>Last Point</a> is set to
|
|
(0, 0) before adding <a href='#Cubic'>Cubic</a>.
|
|
|
|
Appends <a href='#SkPath_kMove_Verb'>kMove Verb</a> to <a href='#Verb_Array'>Verb Array</a> and (0, 0) to <a href='#Point_Array'>Point Array</a>, if needed;
|
|
then appends <a href='#SkPath_kCubic_Verb'>kCubic Verb</a> to <a href='#Verb_Array'>Verb Array</a>; and <a href='SkPoint_Reference#Point'>Points</a> <a href='#SkPath_cubicTo_2_p1'>p1</a>, <a href='#SkPath_cubicTo_2_p2'>p2</a>, <a href='#SkPath_cubicTo_2_p3'>p3</a>
|
|
to <a href='#Point_Array'>Point Array</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_cubicTo_2_p1'><code><strong>p1</strong></code></a></td>
|
|
<td>first control <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Cubic'>Cubic</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_cubicTo_2_p2'><code><strong>p2</strong></code></a></td>
|
|
<td>second control <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Cubic'>Cubic</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_cubicTo_2_p3'><code><strong>p3</strong></code></a></td>
|
|
<td>end <a href='SkPoint_Reference#Point'>Point</a> of <a href='#Cubic'>Cubic</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="d38aaf12c6ff5b8d901a2201bcee5476"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Contour'>Contour</a> <a href='#SkPath_moveTo'>moveTo</a><sup><a href='#SkPath_moveTo_2'>[2]</a></sup> <a href='#SkPath_rCubicTo'>rCubicTo</a> <a href='#SkPath_quadTo'>quadTo</a><sup><a href='#SkPath_quadTo_2'>[2]</a></sup>
|
|
|
|
---
|
|
|
|
<a name='SkPath_rCubicTo'></a>
|
|
## rCubicTo
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_rCubicTo'>rCubicTo</a>(<a href='undocumented#SkScalar'>SkScalar</a> x1, <a href='undocumented#SkScalar'>SkScalar</a> y1, <a href='undocumented#SkScalar'>SkScalar</a> x2, <a href='undocumented#SkScalar'>SkScalar</a> y2, <a href='undocumented#SkScalar'>SkScalar</a> x3, <a href='undocumented#SkScalar'>SkScalar</a> y3)
|
|
</pre>
|
|
|
|
Adds <a href='#Cubic'>Cubic</a> from <a href='#Last_Point'>Last Point</a> towards <a href='SkPoint_Reference#Vector'>Vector</a> (dx1, dy1), then towards
|
|
<a href='SkPoint_Reference#Vector'>Vector</a> (dx2, dy2), to <a href='SkPoint_Reference#Vector'>Vector</a> (dx3, dy3).
|
|
If <a href='#Path'>Path</a> is empty, or last <a href='#SkPath_Verb'>Verb</a>
|
|
is <a href='#SkPath_kClose_Verb'>kClose Verb</a>, <a href='#Last_Point'>Last Point</a> is set to (0, 0) before adding <a href='#Cubic'>Cubic</a>.
|
|
|
|
Appends <a href='#SkPath_kMove_Verb'>kMove Verb</a> to <a href='#Verb_Array'>Verb Array</a> and (0, 0) to <a href='#Point_Array'>Point Array</a>,
|
|
if needed; then appends <a href='#SkPath_kCubic_Verb'>kCubic Verb</a> to <a href='#Verb_Array'>Verb Array</a>; and appends <a href='#Cubic'>Cubic</a>
|
|
control and <a href='#Cubic'>Cubic</a> end to <a href='#Point_Array'>Point Array</a>.
|
|
<a href='#Cubic'>Cubic</a> control is <a href='#Last_Point'>Last Point</a> plus <a href='SkPoint_Reference#Vector'>Vector</a> (dx1, dy1).
|
|
<a href='#Cubic'>Cubic</a> end is <a href='#Last_Point'>Last Point</a> plus <a href='SkPoint_Reference#Vector'>Vector</a> (dx2, dy2).
|
|
Function name stands for "relative cubic to".
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_rCubicTo_x1'><code><strong>x1</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to first <a href='#Cubic'>Cubic</a> control on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rCubicTo_y1'><code><strong>y1</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to first <a href='#Cubic'>Cubic</a> control on y-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rCubicTo_x2'><code><strong>x2</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to second <a href='#Cubic'>Cubic</a> control on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rCubicTo_y2'><code><strong>y2</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to second <a href='#Cubic'>Cubic</a> control on y-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rCubicTo_x3'><code><strong>x3</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to <a href='#Cubic'>Cubic</a> end on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rCubicTo_y3'><code><strong>y3</strong></code></a></td>
|
|
<td>offset from <a href='#Last_Point'>Last Point</a> to <a href='#Cubic'>Cubic</a> end on y-axis</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="19f0cfc7eeba8937fe19446ec0b5f932"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Contour'>Contour</a> <a href='#SkPath_moveTo'>moveTo</a><sup><a href='#SkPath_moveTo_2'>[2]</a></sup> <a href='#SkPath_cubicTo'>cubicTo</a><sup><a href='#SkPath_cubicTo_2'>[2]</a></sup> <a href='#SkPath_quadTo'>quadTo</a><sup><a href='#SkPath_quadTo_2'>[2]</a></sup>
|
|
|
|
---
|
|
|
|
## <a name='Arc'>Arc</a>
|
|
|
|
<a href='#Arc'>Arc</a> can be constructed in a number of ways. <a href='#Arc'>Arc</a> may be described by part of <a href='undocumented#Oval'>Oval</a> and angles,
|
|
by start point and end point, and by radius and tangent lines. Each construction has advantages,
|
|
and some constructions correspond to <a href='#Arc'>Arc</a> drawing in graphics standards.
|
|
|
|
All <a href='#Arc'>Arc</a> draws are implemented by one or more <a href='#Conic'>Conic</a> draws. When <a href='#Conic_Weight'>Conic Weight</a> is less than one,
|
|
<a href='#Conic'>Conic</a> describes an <a href='#Arc'>Arc</a> of some <a href='undocumented#Oval'>Oval</a> or <a href='undocumented#Circle'>Circle</a>.
|
|
|
|
<a href='#SkPath_arcTo'>arcTo(const SkRect& oval, SkScalar startAngle, SkScalar sweepAngle, bool forceMoveTo)</a>
|
|
describes <a href='#Arc'>Arc</a> as a piece of <a href='undocumented#Oval'>Oval</a>, beginning at start angle, sweeping clockwise or counterclockwise,
|
|
which may continue <a href='#Contour'>Contour</a> or start a new one. This construction is similar to <a href='undocumented#PostScript'>PostScript</a> and
|
|
<a href='undocumented#HTML_Canvas'>HTML Canvas</a> arcs. Variation <a href='#SkPath_addArc'>addArc</a> always starts new <a href='#Contour'>Contour</a>. Canvas::drawArc draws without
|
|
requiring <a href='#Path'>Path</a>.
|
|
|
|
<a href='#SkPath_arcTo_2'>arcTo(SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2, SkScalar radius)</a>
|
|
describes <a href='#Arc'>Arc</a> as tangent to the line (x0, y0), (x1, y1) and tangent to the line (x1, y1), (x2, y2)
|
|
where (x0, y0) is the last <a href='SkPoint_Reference#Point'>Point</a> added to <a href='#Path'>Path</a>. This construction is similar to <a href='undocumented#PostScript'>PostScript</a> and
|
|
<a href='undocumented#HTML_Canvas'>HTML Canvas</a> arcs.
|
|
|
|
<a href='#SkPath_arcTo_4'>arcTo(SkScalar rx, SkScalar ry, SkScalar xAxisRotate, ArcSize largeArc, Direction sweep,
|
|
SkScalar x, SkScalar y)</a>
|
|
describes <a href='#Arc'>Arc</a> as part of <a href='undocumented#Oval'>Oval</a> with radii (rx, ry), beginning at
|
|
last <a href='SkPoint_Reference#Point'>Point</a> added to <a href='#Path'>Path</a> and ending at (x, y). More than one <a href='#Arc'>Arc</a> satisfies this criteria,
|
|
so additional values choose a single solution. This construction is similar to <a href='undocumented#SVG'>SVG</a> arcs.
|
|
|
|
<a href='#SkPath_conicTo'>conicTo</a> describes <a href='#Arc'>Arc</a> of less than 180 degrees as a pair of tangent lines and <a href='#Conic_Weight'>Conic Weight</a>.
|
|
<a href='#SkPath_conicTo'>conicTo</a> can represent any <a href='#Arc'>Arc</a> with a sweep less than 180 degrees at any rotation. All <a href='#SkPath_arcTo'>arcTo</a>
|
|
constructions are converted to <a href='#Conic'>Conic</a> data when added to <a href='#Path'>Path</a>.
|
|
|
|
|
|
|
|
<table> <tr>
|
|
<td><sup>1</sup> <a href='#SkPath_arcTo'>arcTo(const SkRect& oval, SkScalar startAngle, SkScalar sweepAngle, bool forceMoveTo)</a></td>
|
|
</tr> <tr>
|
|
<td><sup>2</sup> parameter sets force MoveTo</td>
|
|
</tr> <tr>
|
|
<td><sup>3</sup> start angle must be multiple of 90 degrees</td>
|
|
</tr> <tr>
|
|
<td><sup>4</sup> <a href='#SkPath_arcTo_2'>arcTo(SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2, SkScalar radius)</a></td>
|
|
</tr> <tr>
|
|
<td><sup>5</sup> <a href='#SkPath_arcTo_4'>arcTo(SkScalar rx, SkScalar ry, SkScalar xAxisRotate, ArcSize largeArc,
|
|
Direction sweep, SkScalar x, SkScalar y)</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="5acc77eba0cb4d00bbf3a8f4db0c0aee"></fiddle-embed></div>
|
|
|
|
In the example above:
|
|
|
|
<table> <tr>
|
|
<td>1 describes an arc from an oval, a starting angle, and a sweep angle.</td>
|
|
</tr> <tr>
|
|
<td>2 is similar to 1, but does not require building a path to draw.</td>
|
|
</tr> <tr>
|
|
<td>3 is similar to 1, but always begins new <a href='#Contour'>Contour</a>.</td>
|
|
</tr> <tr>
|
|
<td>4 describes an arc from a pair of tangent lines and a radius.</td>
|
|
</tr> <tr>
|
|
<td>5 describes an arc from <a href='undocumented#Oval'>Oval</a> center, arc start <a href='SkPoint_Reference#Point'>Point</a> and arc end <a href='SkPoint_Reference#Point'>Point</a>.</td>
|
|
</tr> <tr>
|
|
<td>6 describes an arc from a pair of tangent lines and a <a href='#Conic_Weight'>Conic Weight</a>.</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<a name='SkPath_arcTo'></a>
|
|
## arcTo
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_arcTo'>arcTo</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& oval, <a href='undocumented#SkScalar'>SkScalar</a> startAngle, <a href='undocumented#SkScalar'>SkScalar</a> sweepAngle, bool forceMoveTo)
|
|
</pre>
|
|
|
|
Appends <a href='#Arc'>Arc</a> to <a href='#Path'>Path</a>. <a href='#Arc'>Arc</a> added is part of ellipse
|
|
bounded by <a href='#SkPath_arcTo_oval'>oval</a>, from <a href='#SkPath_arcTo_startAngle'>startAngle</a> through <a href='#SkPath_arcTo_sweepAngle'>sweepAngle</a>. Both <a href='#SkPath_arcTo_startAngle'>startAngle</a> and
|
|
<a href='#SkPath_arcTo_sweepAngle'>sweepAngle</a> are measured in degrees, where zero degrees is aligned with the
|
|
positive x-axis, and positive sweeps extends <a href='#Arc'>Arc</a> clockwise.
|
|
|
|
<a href='#SkPath_arcTo'>arcTo</a> adds <a href='undocumented#Line'>Line</a> connecting <a href='#Path'>Path</a> last <a href='SkPoint_Reference#Point'>Point</a> to initial <a href='#Arc'>Arc</a> <a href='SkPoint_Reference#Point'>Point</a> if <a href='#SkPath_arcTo_forceMoveTo'>forceMoveTo</a>
|
|
is false and <a href='#Path'>Path</a> is not empty. Otherwise, added <a href='#Contour'>Contour</a> begins with first point
|
|
of <a href='#Arc'>Arc</a>. Angles greater than -360 and less than 360 are treated modulo 360.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_arcTo_oval'><code><strong>oval</strong></code></a></td>
|
|
<td>bounds of ellipse containing <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_startAngle'><code><strong>startAngle</strong></code></a></td>
|
|
<td>starting angle of <a href='#Arc'>Arc</a> in degrees</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_sweepAngle'><code><strong>sweepAngle</strong></code></a></td>
|
|
<td>sweep, in degrees. Positive is clockwise; treated modulo 360</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_forceMoveTo'><code><strong>forceMoveTo</strong></code></a></td>
|
|
<td>true to start a new contour with <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="5f02890edaa10cb5e1a4243a82b6a382"><div><a href='#SkPath_arcTo'>arcTo</a> continues a previous contour when <a href='#SkPath_arcTo_forceMoveTo'>forceMoveTo</a> is false and when <a href='#Path'>Path</a>
|
|
is not empty.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_addArc'>addArc</a> <a href='SkCanvas_Reference#SkCanvas_drawArc'>SkCanvas::drawArc</a> <a href='#SkPath_conicTo'>conicTo</a><sup><a href='#SkPath_conicTo_2'>[2]</a></sup>
|
|
|
|
---
|
|
|
|
<a name='SkPath_arcTo_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_arcTo'>arcTo</a>(<a href='undocumented#SkScalar'>SkScalar</a> x1, <a href='undocumented#SkScalar'>SkScalar</a> y1, <a href='undocumented#SkScalar'>SkScalar</a> x2, <a href='undocumented#SkScalar'>SkScalar</a> y2, <a href='undocumented#SkScalar'>SkScalar</a> radius)
|
|
</pre>
|
|
|
|
Appends <a href='#Arc'>Arc</a> to <a href='#Path'>Path</a>, after appending <a href='undocumented#Line'>Line</a> if needed. <a href='#Arc'>Arc</a> is implemented by <a href='#Conic'>Conic</a>
|
|
weighted to describe part of <a href='undocumented#Circle'>Circle</a>. <a href='#Arc'>Arc</a> is contained by tangent from
|
|
last <a href='#Path'>Path</a> point (x0, y0) to (<a href='#SkPath_arcTo_2_x1'>x1</a>, <a href='#SkPath_arcTo_2_y1'>y1</a>), and tangent from (<a href='#SkPath_arcTo_2_x1'>x1</a>, <a href='#SkPath_arcTo_2_y1'>y1</a>) to (<a href='#SkPath_arcTo_2_x2'>x2</a>, <a href='#SkPath_arcTo_2_y2'>y2</a>). <a href='#Arc'>Arc</a>
|
|
is part of <a href='undocumented#Circle'>Circle</a> sized to <a href='#SkPath_arcTo_2_radius'>radius</a>, positioned so it touches both tangent lines.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="d9c6435f26f37b3d63c664a99028f77f"></fiddle-embed></div>
|
|
|
|
If last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> does not start <a href='#Arc'>Arc</a>, <a href='#SkPath_arcTo'>arcTo</a> appends connecting <a href='undocumented#Line'>Line</a> to <a href='#Path'>Path</a>.
|
|
The length of <a href='SkPoint_Reference#Vector'>Vector</a> from (<a href='#SkPath_arcTo_2_x1'>x1</a>, <a href='#SkPath_arcTo_2_y1'>y1</a>) to (<a href='#SkPath_arcTo_2_x2'>x2</a>, <a href='#SkPath_arcTo_2_y2'>y2</a>) does not affect <a href='#Arc'>Arc</a>.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="01d2ddfd539ab86a86989e210640dffc"></fiddle-embed></div>
|
|
|
|
<a href='#Arc'>Arc</a> sweep is always less than 180 degrees. If <a href='#SkPath_arcTo_2_radius'>radius</a> is zero, or if
|
|
tangents are nearly parallel, <a href='#SkPath_arcTo'>arcTo</a> appends <a href='undocumented#Line'>Line</a> from last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> to (<a href='#SkPath_arcTo_2_x1'>x1</a>, <a href='#SkPath_arcTo_2_y1'>y1</a>).
|
|
|
|
<a href='#SkPath_arcTo'>arcTo</a> appends at most one <a href='undocumented#Line'>Line</a> and one <a href='#Conic'>Conic</a>.
|
|
<a href='#SkPath_arcTo'>arcTo</a> implements the functionality of <a href='undocumented#Arct'>PostScript Arct</a> and <a href='undocumented#ArcTo'>HTML Canvas ArcTo</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_arcTo_2_x1'><code><strong>x1</strong></code></a></td>
|
|
<td>x-axis value common to pair of tangents</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_2_y1'><code><strong>y1</strong></code></a></td>
|
|
<td>y-axis value common to pair of tangents</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_2_x2'><code><strong>x2</strong></code></a></td>
|
|
<td>x-axis value end of second tangent</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_2_y2'><code><strong>y2</strong></code></a></td>
|
|
<td>y-axis value end of second tangent</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_2_radius'><code><strong>radius</strong></code></a></td>
|
|
<td>distance from <a href='#Arc'>Arc</a> to <a href='undocumented#Circle'>Circle</a> center</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="498360fa0a201cc5db04b1c27256358f"><div><a href='#SkPath_arcTo'>arcTo</a> is represented by <a href='undocumented#Line'>Line</a> and circular <a href='#Conic'>Conic</a> in <a href='#Path'>Path</a>.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
move to (156,20)
|
|
line (156,20),(79.2893,20)
|
|
conic (79.2893,20),(200,20),(114.645,105.355) weight 0.382683
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_conicTo'>conicTo</a><sup><a href='#SkPath_conicTo_2'>[2]</a></sup>
|
|
|
|
---
|
|
|
|
<a name='SkPath_arcTo_3'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_arcTo'>arcTo</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> p1, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> p2, <a href='undocumented#SkScalar'>SkScalar</a> radius)
|
|
</pre>
|
|
|
|
Appends <a href='#Arc'>Arc</a> to <a href='#Path'>Path</a>, after appending <a href='undocumented#Line'>Line</a> if needed. <a href='#Arc'>Arc</a> is implemented by <a href='#Conic'>Conic</a>
|
|
weighted to describe part of <a href='undocumented#Circle'>Circle</a>. <a href='#Arc'>Arc</a> is contained by tangent from
|
|
last <a href='#Path'>Path</a> point to <a href='#SkPath_arcTo_3_p1'>p1</a>, and tangent from <a href='#SkPath_arcTo_3_p1'>p1</a> to <a href='#SkPath_arcTo_3_p2'>p2</a>. <a href='#Arc'>Arc</a>
|
|
is part of <a href='undocumented#Circle'>Circle</a> sized to <a href='#SkPath_arcTo_3_radius'>radius</a>, positioned so it touches both tangent lines.
|
|
|
|
If last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> does not start <a href='#Arc'>Arc</a>, <a href='#SkPath_arcTo'>arcTo</a> appends connecting <a href='undocumented#Line'>Line</a> to <a href='#Path'>Path</a>.
|
|
The length of <a href='SkPoint_Reference#Vector'>Vector</a> from <a href='#SkPath_arcTo_3_p1'>p1</a> to <a href='#SkPath_arcTo_3_p2'>p2</a> does not affect <a href='#Arc'>Arc</a>.
|
|
|
|
<a href='#Arc'>Arc</a> sweep is always less than 180 degrees. If <a href='#SkPath_arcTo_3_radius'>radius</a> is zero, or if
|
|
tangents are nearly parallel, <a href='#SkPath_arcTo'>arcTo</a> appends <a href='undocumented#Line'>Line</a> from last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> to <a href='#SkPath_arcTo_3_p1'>p1</a>.
|
|
|
|
<a href='#SkPath_arcTo'>arcTo</a> appends at most one <a href='undocumented#Line'>Line</a> and one <a href='#Conic'>Conic</a>.
|
|
<a href='#SkPath_arcTo'>arcTo</a> implements the functionality of <a href='undocumented#Arct'>PostScript Arct</a> and <a href='undocumented#ArcTo'>HTML Canvas ArcTo</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_arcTo_3_p1'><code><strong>p1</strong></code></a></td>
|
|
<td><a href='SkPoint_Reference#Point'>Point</a> common to pair of tangents</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_3_p2'><code><strong>p2</strong></code></a></td>
|
|
<td>end of second tangent</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_3_radius'><code><strong>radius</strong></code></a></td>
|
|
<td>distance from <a href='#Arc'>Arc</a> to <a href='undocumented#Circle'>Circle</a> center</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="0c056264a361579c18e5d02d3172d4d4"><div>Because tangent lines are parallel, <a href='#SkPath_arcTo'>arcTo</a> appends line from last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> to
|
|
<a href='#SkPath_arcTo_3_p1'>p1</a>, but does not append a circular <a href='#Conic'>Conic</a>.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
move to (156,20)
|
|
line (156,20),(200,20)
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_conicTo'>conicTo</a><sup><a href='#SkPath_conicTo_2'>[2]</a></sup>
|
|
|
|
---
|
|
|
|
## <a name='SkPath_ArcSize'>Enum SkPath::ArcSize</a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
enum <a href='#SkPath_ArcSize'>ArcSize</a> {
|
|
<a href='#SkPath_kSmall_ArcSize'>kSmall ArcSize</a>,
|
|
<a href='#SkPath_kLarge_ArcSize'>kLarge ArcSize</a>,
|
|
};
|
|
</pre>
|
|
|
|
Four <a href='undocumented#Oval'>Oval</a> parts with radii (rx, ry) start at last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> and ends at (x, y).
|
|
<a href='#SkPath_ArcSize'>ArcSize</a> and <a href='#SkPath_Direction'>Direction</a> select one of the four <a href='undocumented#Oval'>Oval</a> parts.
|
|
|
|
### Constants
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Const</th>
|
|
<th style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>Value</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kSmall_ArcSize'><code>SkPath::kSmall_ArcSize</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>0</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
smaller of Arc pair</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kLarge_ArcSize'><code>SkPath::kLarge_ArcSize</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>1</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
larger of Arc pair</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="8e40c546eecd9cc213200717240898ba"><div><a href='#Arc'>Arc</a> begins at top of <a href='undocumented#Oval'>Oval</a> pair and ends at bottom. <a href='#Arc'>Arc</a> can take four routes to get there.
|
|
Two routes are large, and two routes are counterclockwise. The one route both large
|
|
and counterclockwise is blue.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_arcTo'>arcTo</a><sup><a href='#SkPath_arcTo_2'>[2]</a></sup><sup><a href='#SkPath_arcTo_3'>[3]</a></sup><sup><a href='#SkPath_arcTo_4'>[4]</a></sup><sup><a href='#SkPath_arcTo_5'>[5]</a></sup> <a href='#SkPath_Direction'>Direction</a>
|
|
|
|
<a name='SkPath_arcTo_4'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_arcTo'>arcTo</a>(<a href='undocumented#SkScalar'>SkScalar</a> rx, <a href='undocumented#SkScalar'>SkScalar</a> ry, <a href='undocumented#SkScalar'>SkScalar</a> xAxisRotate, <a href='#SkPath_ArcSize'>ArcSize</a> largeArc, <a href='#SkPath_Direction'>Direction</a> sweep,
|
|
<a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y)
|
|
</pre>
|
|
|
|
Appends <a href='#Arc'>Arc</a> to <a href='#Path'>Path</a>. <a href='#Arc'>Arc</a> is implemented by one or more <a href='#Conic'>Conics</a> weighted to
|
|
describe part of <a href='undocumented#Oval'>Oval</a> with radii (<a href='#SkPath_arcTo_4_rx'>rx</a>, <a href='#SkPath_arcTo_4_ry'>ry</a>) rotated by <a href='#SkPath_arcTo_4_xAxisRotate'>xAxisRotate</a> degrees. <a href='#Arc'>Arc</a>
|
|
curves from last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> to (<a href='#SkPath_arcTo_4_x'>x</a>, <a href='#SkPath_arcTo_4_y'>y</a>), choosing one of four possible routes:
|
|
clockwise or counterclockwise, and smaller or larger.
|
|
|
|
<a href='#Arc'>Arc</a> <a href='#SkPath_arcTo_4_sweep'>sweep</a> is always less than 360 degrees. <a href='#SkPath_arcTo'>arcTo</a> appends <a href='undocumented#Line'>Line</a> to (<a href='#SkPath_arcTo_4_x'>x</a>, <a href='#SkPath_arcTo_4_y'>y</a>) if
|
|
either radii are zero, or if last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> equals (<a href='#SkPath_arcTo_4_x'>x</a>, <a href='#SkPath_arcTo_4_y'>y</a>). <a href='#SkPath_arcTo'>arcTo</a> scales radii
|
|
(<a href='#SkPath_arcTo_4_rx'>rx</a>, <a href='#SkPath_arcTo_4_ry'>ry</a>) to fit last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> and (<a href='#SkPath_arcTo_4_x'>x</a>, <a href='#SkPath_arcTo_4_y'>y</a>) if both are greater than zero but
|
|
too small.
|
|
|
|
<a href='#SkPath_arcTo'>arcTo</a> appends up to four <a href='#Conic'>Conic</a> curves.
|
|
<a href='#SkPath_arcTo'>arcTo</a> implements the functionality of <a href='undocumented#Arc'>SVG Arc</a>, although <a href='undocumented#SVG'>SVG</a> "<a href='#SkPath_arcTo_4_sweep'>sweep</a>-flag" value
|
|
is opposite the integer value of <a href='#SkPath_arcTo_4_sweep'>sweep</a>; <a href='undocumented#SVG'>SVG</a> "<a href='#SkPath_arcTo_4_sweep'>sweep</a>-flag" uses 1 for clockwise,
|
|
while <a href='#SkPath_kCW_Direction'>kCW Direction</a> cast to int is zero.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_arcTo_4_rx'><code><strong>rx</strong></code></a></td>
|
|
<td>radius in <a href='#SkPath_arcTo_4_x'>x</a> before <a href='#SkPath_arcTo_4_x'>x</a>-axis rotation</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_4_ry'><code><strong>ry</strong></code></a></td>
|
|
<td>radius in <a href='#SkPath_arcTo_4_y'>y</a> before <a href='#SkPath_arcTo_4_x'>x</a>-axis rotation</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_4_xAxisRotate'><code><strong>xAxisRotate</strong></code></a></td>
|
|
<td><a href='#SkPath_arcTo_4_x'>x</a>-axis rotation in degrees; positive values are clockwise</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_4_largeArc'><code><strong>largeArc</strong></code></a></td>
|
|
<td>chooses smaller or larger <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_4_sweep'><code><strong>sweep</strong></code></a></td>
|
|
<td>chooses clockwise or counterclockwise <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_4_x'><code><strong>x</strong></code></a></td>
|
|
<td>end of <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_4_y'><code><strong>y</strong></code></a></td>
|
|
<td>end of <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="6b6ea44f659b27918f3a6fa621bf6173"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_rArcTo'>rArcTo</a> <a href='#SkPath_ArcSize'>ArcSize</a> <a href='#SkPath_Direction'>Direction</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_arcTo_5'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_arcTo'>arcTo</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> r, <a href='undocumented#SkScalar'>SkScalar</a> xAxisRotate, <a href='#SkPath_ArcSize'>ArcSize</a> largeArc, <a href='#SkPath_Direction'>Direction</a> sweep,
|
|
const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> xy)
|
|
</pre>
|
|
|
|
Appends <a href='#Arc'>Arc</a> to <a href='#Path'>Path</a>. <a href='#Arc'>Arc</a> is implemented by one or more <a href='#Conic'>Conic</a> weighted to describe part of <a href='undocumented#Oval'>Oval</a>
|
|
with radii (<a href='#SkPath_arcTo_5_r'>r</a>.fX, <a href='#SkPath_arcTo_5_r'>r</a>.fY) rotated by <a href='#SkPath_arcTo_5_xAxisRotate'>xAxisRotate</a> degrees. <a href='#Arc'>Arc</a> curves from last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> to
|
|
(<a href='#SkPath_arcTo_5_xy'>xy</a>.fX, <a href='#SkPath_arcTo_5_xy'>xy</a>.fY), choosing one of four possible routes: clockwise or counterclockwise,
|
|
and smaller or larger.
|
|
|
|
<a href='#Arc'>Arc</a> <a href='#SkPath_arcTo_5_sweep'>sweep</a> is always less than 360 degrees. <a href='#SkPath_arcTo'>arcTo</a> appends <a href='undocumented#Line'>Line</a> to <a href='#SkPath_arcTo_5_xy'>xy</a> if either radii are zero,
|
|
or if last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> equals (x, y). <a href='#SkPath_arcTo'>arcTo</a> scales radii <a href='#SkPath_arcTo_5_r'>r</a> to fit last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> and
|
|
<a href='#SkPath_arcTo_5_xy'>xy</a> if both are greater than zero but too small to describe an arc.
|
|
|
|
<a href='#SkPath_arcTo'>arcTo</a> appends up to four <a href='#Conic'>Conic</a> curves.
|
|
<a href='#SkPath_arcTo'>arcTo</a> implements the functionality of <a href='undocumented#Arc'>SVG Arc</a>, although <a href='undocumented#SVG'>SVG</a> "<a href='#SkPath_arcTo_5_sweep'>sweep</a>-flag" value is
|
|
opposite the integer value of <a href='#SkPath_arcTo_5_sweep'>sweep</a>; <a href='undocumented#SVG'>SVG</a> "<a href='#SkPath_arcTo_5_sweep'>sweep</a>-flag" uses 1 for clockwise, while
|
|
<a href='#SkPath_kCW_Direction'>kCW Direction</a> cast to int is zero.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_arcTo_5_r'><code><strong>r</strong></code></a></td>
|
|
<td>radii on axes before x-axis rotation</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_5_xAxisRotate'><code><strong>xAxisRotate</strong></code></a></td>
|
|
<td>x-axis rotation in degrees; positive values are clockwise</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_5_largeArc'><code><strong>largeArc</strong></code></a></td>
|
|
<td>chooses smaller or larger <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_5_sweep'><code><strong>sweep</strong></code></a></td>
|
|
<td>chooses clockwise or counterclockwise <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_arcTo_5_xy'><code><strong>xy</strong></code></a></td>
|
|
<td>end of <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="3f76a1007416181a4848c1a87fc81dbd"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_rArcTo'>rArcTo</a> <a href='#SkPath_ArcSize'>ArcSize</a> <a href='#SkPath_Direction'>Direction</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_rArcTo'></a>
|
|
## rArcTo
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_rArcTo'>rArcTo</a>(<a href='undocumented#SkScalar'>SkScalar</a> rx, <a href='undocumented#SkScalar'>SkScalar</a> ry, <a href='undocumented#SkScalar'>SkScalar</a> xAxisRotate, <a href='#SkPath_ArcSize'>ArcSize</a> largeArc, <a href='#SkPath_Direction'>Direction</a> sweep,
|
|
<a href='undocumented#SkScalar'>SkScalar</a> dx, <a href='undocumented#SkScalar'>SkScalar</a> dy)
|
|
</pre>
|
|
|
|
Appends <a href='#Arc'>Arc</a> to <a href='#Path'>Path</a>, relative to last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a>. <a href='#Arc'>Arc</a> is implemented by one or
|
|
more <a href='#Conic'>Conic</a>, weighted to describe part of <a href='undocumented#Oval'>Oval</a> with radii (<a href='#SkPath_rArcTo_rx'>rx</a>, <a href='#SkPath_rArcTo_ry'>ry</a>) rotated by
|
|
<a href='#SkPath_rArcTo_xAxisRotate'>xAxisRotate</a> degrees. <a href='#Arc'>Arc</a> curves from last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> (x0, y0) to end <a href='SkPoint_Reference#Point'>Point</a>:
|
|
|
|
(x0 + <a href='#SkPath_rArcTo_dx'>dx</a>, y0 + <a href='#SkPath_rArcTo_dy'>dy</a>)
|
|
,
|
|
choosing one of four possible routes: clockwise or
|
|
counterclockwise, and smaller or larger. If <a href='#Path'>Path</a> is empty, the start <a href='#Arc'>Arc</a> <a href='SkPoint_Reference#Point'>Point</a>
|
|
is (0, 0).
|
|
|
|
<a href='#Arc'>Arc</a> <a href='#SkPath_rArcTo_sweep'>sweep</a> is always less than 360 degrees. <a href='#SkPath_arcTo'>arcTo</a> appends <a href='undocumented#Line'>Line</a> to end <a href='SkPoint_Reference#Point'>Point</a>
|
|
if either radii are zero, or if last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> equals end <a href='SkPoint_Reference#Point'>Point</a>.
|
|
<a href='#SkPath_arcTo'>arcTo</a> scales radii (<a href='#SkPath_rArcTo_rx'>rx</a>, <a href='#SkPath_rArcTo_ry'>ry</a>) to fit last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a> and end <a href='SkPoint_Reference#Point'>Point</a> if both are
|
|
greater than zero but too small to describe an arc.
|
|
|
|
<a href='#SkPath_arcTo'>arcTo</a> appends up to four <a href='#Conic'>Conic</a> curves.
|
|
<a href='#SkPath_arcTo'>arcTo</a> implements the functionality of <a href='undocumented#Arc'>SVG Arc</a>, although <a href='undocumented#SVG'>SVG</a> "<a href='#SkPath_rArcTo_sweep'>sweep</a>-flag" value is
|
|
opposite the integer value of <a href='#SkPath_rArcTo_sweep'>sweep</a>; <a href='undocumented#SVG'>SVG</a> "<a href='#SkPath_rArcTo_sweep'>sweep</a>-flag" uses 1 for clockwise, while
|
|
<a href='#SkPath_kCW_Direction'>kCW Direction</a> cast to int is zero.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_rArcTo_rx'><code><strong>rx</strong></code></a></td>
|
|
<td>radius before x-axis rotation</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rArcTo_ry'><code><strong>ry</strong></code></a></td>
|
|
<td>radius before x-axis rotation</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rArcTo_xAxisRotate'><code><strong>xAxisRotate</strong></code></a></td>
|
|
<td>x-axis rotation in degrees; positive values are clockwise</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rArcTo_largeArc'><code><strong>largeArc</strong></code></a></td>
|
|
<td>chooses smaller or larger <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rArcTo_sweep'><code><strong>sweep</strong></code></a></td>
|
|
<td>chooses clockwise or counterclockwise <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rArcTo_dx'><code><strong>dx</strong></code></a></td>
|
|
<td>x-axis offset end of <a href='#Arc'>Arc</a> from last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_rArcTo_dy'><code><strong>dy</strong></code></a></td>
|
|
<td>y-axis offset end of <a href='#Arc'>Arc</a> from last <a href='#Path'>Path</a> <a href='SkPoint_Reference#Point'>Point</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="3f76a1007416181a4848c1a87fc81dbd"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_arcTo'>arcTo</a><sup><a href='#SkPath_arcTo_2'>[2]</a></sup><sup><a href='#SkPath_arcTo_3'>[3]</a></sup><sup><a href='#SkPath_arcTo_4'>[4]</a></sup><sup><a href='#SkPath_arcTo_5'>[5]</a></sup> <a href='#SkPath_ArcSize'>ArcSize</a> <a href='#SkPath_Direction'>Direction</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_close'></a>
|
|
## close
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_close'>close</a>()
|
|
</pre>
|
|
|
|
Appends <a href='#SkPath_kClose_Verb'>kClose Verb</a> to <a href='#Path'>Path</a>. A closed <a href='#Contour'>Contour</a> connects the first and last <a href='SkPoint_Reference#Point'>Point</a>
|
|
with <a href='undocumented#Line'>Line</a>, forming a continuous loop. Open and closed <a href='#Contour'>Contour</a> draw the same
|
|
with <a href='SkPaint_Reference#SkPaint_kFill_Style'>SkPaint::kFill Style</a>. With <a href='SkPaint_Reference#SkPaint_kStroke_Style'>SkPaint::kStroke Style</a>, open <a href='#Contour'>Contour</a> draws
|
|
<a href='SkPaint_Reference#Stroke_Cap'>Paint Stroke Cap</a> at <a href='#Contour'>Contour</a> start and end; closed <a href='#Contour'>Contour</a> draws
|
|
<a href='SkPaint_Reference#Stroke_Join'>Paint Stroke Join</a> at <a href='#Contour'>Contour</a> start and end.
|
|
|
|
<a href='#SkPath_close'>close</a> has no effect if <a href='#Path'>Path</a> is empty or last <a href='#Path'>Path</a> <a href='#SkPath_Verb'>Verb</a> is <a href='#SkPath_kClose_Verb'>kClose Verb</a>.
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="9235f6309271d6420fa5c45dc28664c5"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
---
|
|
|
|
<a name='SkPath_IsInverseFillType'></a>
|
|
## IsInverseFillType
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
static bool <a href='#SkPath_IsInverseFillType'>IsInverseFillType</a>(<a href='#SkPath_FillType'>FillType</a> fill)
|
|
</pre>
|
|
|
|
Returns true if <a href='#SkPath_IsInverseFillType_fill'>fill</a> is inverted and <a href='#Path'>Path</a> with <a href='#SkPath_IsInverseFillType_fill'>fill</a> represents area outside
|
|
of its geometric bounds.
|
|
|
|
| <a href='#SkPath_FillType'>FillType</a> | is inverse |
|
|
| --- | --- |
|
|
| <a href='#SkPath_kWinding_FillType'>kWinding FillType</a> | false |
|
|
| <a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a> | false |
|
|
| <a href='#SkPath_kInverseWinding_FillType'>kInverseWinding FillType</a> | true |
|
|
| <a href='#SkPath_kInverseEvenOdd_FillType'>kInverseEvenOdd FillType</a> | true |
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_IsInverseFillType_fill'><code><strong>fill</strong></code></a></td>
|
|
<td>one of: <a href='#SkPath_kWinding_FillType'>kWinding FillType</a>, <a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a>,
|
|
<a href='#SkPath_kInverseWinding_FillType'>kInverseWinding FillType</a>, <a href='#SkPath_kInverseEvenOdd_FillType'>kInverseEvenOdd FillType</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Path'>Path</a> fills outside its bounds
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="1453856a9d0c73e8192bf298c4143563">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
IsInverseFillType(kWinding_FillType) == false
|
|
IsInverseFillType(kEvenOdd_FillType) == false
|
|
IsInverseFillType(kInverseWinding_FillType) == true
|
|
IsInverseFillType(kInverseEvenOdd_FillType) == true
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_FillType'>FillType</a> <a href='#SkPath_getFillType'>getFillType</a> <a href='#SkPath_setFillType'>setFillType</a> <a href='#SkPath_ConvertToNonInverseFillType'>ConvertToNonInverseFillType</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_ConvertToNonInverseFillType'></a>
|
|
## ConvertToNonInverseFillType
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
static <a href='#SkPath_FillType'>FillType</a> <a href='#SkPath_ConvertToNonInverseFillType'>ConvertToNonInverseFillType</a>(<a href='#SkPath_FillType'>FillType</a> fill)
|
|
</pre>
|
|
|
|
Returns equivalent <a href='#Fill_Type'>Fill Type</a> representing <a href='#Path'>Path</a> <a href='#SkPath_ConvertToNonInverseFillType_fill'>fill</a> inside its bounds.
|
|
.
|
|
|
|
| <a href='#SkPath_FillType'>FillType</a> | inside <a href='#SkPath_FillType'>FillType</a> |
|
|
| --- | --- |
|
|
| <a href='#SkPath_kWinding_FillType'>kWinding FillType</a> | <a href='#SkPath_kWinding_FillType'>kWinding FillType</a> |
|
|
| <a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a> | <a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a> |
|
|
| <a href='#SkPath_kInverseWinding_FillType'>kInverseWinding FillType</a> | <a href='#SkPath_kWinding_FillType'>kWinding FillType</a> |
|
|
| <a href='#SkPath_kInverseEvenOdd_FillType'>kInverseEvenOdd FillType</a> | <a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a> |
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_ConvertToNonInverseFillType_fill'><code><strong>fill</strong></code></a></td>
|
|
<td>one of: <a href='#SkPath_kWinding_FillType'>kWinding FillType</a>, <a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a>,
|
|
<a href='#SkPath_kInverseWinding_FillType'>kInverseWinding FillType</a>, <a href='#SkPath_kInverseEvenOdd_FillType'>kInverseEvenOdd FillType</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
<a href='#SkPath_ConvertToNonInverseFillType_fill'>fill</a>, or <a href='#SkPath_kWinding_FillType'>kWinding FillType</a> or <a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a> if <a href='#SkPath_ConvertToNonInverseFillType_fill'>fill</a> is inverted
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="319f6b124458dcc0f9ce4d7bbde65810">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
ConvertToNonInverseFillType(kWinding_FillType) == kWinding_FillType
|
|
ConvertToNonInverseFillType(kEvenOdd_FillType) == kEvenOdd_FillType
|
|
ConvertToNonInverseFillType(kInverseWinding_FillType) == kWinding_FillType
|
|
ConvertToNonInverseFillType(kInverseEvenOdd_FillType) == kEvenOdd_FillType
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_FillType'>FillType</a> <a href='#SkPath_getFillType'>getFillType</a> <a href='#SkPath_setFillType'>setFillType</a> <a href='#SkPath_IsInverseFillType'>IsInverseFillType</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_ConvertConicToQuads'></a>
|
|
## ConvertConicToQuads
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
static int <a href='#SkPath_ConvertConicToQuads'>ConvertConicToQuads</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p0, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p1, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p2, <a href='undocumented#SkScalar'>SkScalar</a> w,
|
|
<a href='SkPoint_Reference#SkPoint'>SkPoint</a> pts[], int pow2)
|
|
</pre>
|
|
|
|
Approximates <a href='#Conic'>Conic</a> with <a href='#Quad'>Quad</a> array. <a href='#Conic'>Conic</a> is constructed from start <a href='SkPoint_Reference#Point'>Point</a> <a href='#SkPath_ConvertConicToQuads_p0'>p0</a>,
|
|
control <a href='SkPoint_Reference#Point'>Point</a> <a href='#SkPath_ConvertConicToQuads_p1'>p1</a>, end <a href='SkPoint_Reference#Point'>Point</a> <a href='#SkPath_ConvertConicToQuads_p2'>p2</a>, and weight <a href='#SkPath_ConvertConicToQuads_w'>w</a>.
|
|
<a href='#Quad'>Quad</a> array is stored in <a href='#SkPath_ConvertConicToQuads_pts'>pts</a>; this storage is supplied by caller.
|
|
Maximum <a href='#Quad'>Quad</a> count is 2 to the <a href='#SkPath_ConvertConicToQuads_pow2'>pow2</a>.
|
|
Every third point in array shares last <a href='SkPoint_Reference#Point'>Point</a> of previous <a href='#Quad'>Quad</a> and first <a href='SkPoint_Reference#Point'>Point</a> of
|
|
next <a href='#Quad'>Quad</a>. Maximum <a href='#SkPath_ConvertConicToQuads_pts'>pts</a> storage size is given by:
|
|
(1 + 2 * (1 << <a href='#SkPath_ConvertConicToQuads_pow2'>pow2</a>)) * sizeof(SkPoint).
|
|
|
|
Returns <a href='#Quad'>Quad</a> count used the approximation, which may be smaller
|
|
than the number requested.
|
|
|
|
<a href='#Conic_Weight'>Conic Weight</a> determines the amount of influence <a href='#Conic'>Conic</a> control point has on the curve.
|
|
<a href='#SkPath_ConvertConicToQuads_w'>w</a> less than one represents an elliptical section. <a href='#SkPath_ConvertConicToQuads_w'>w</a> greater than one represents
|
|
a hyperbolic section. <a href='#SkPath_ConvertConicToQuads_w'>w</a> equal to one represents a parabolic section.
|
|
|
|
Two <a href='#Quad'>Quad</a> curves are sufficient to approximate an elliptical <a href='#Conic'>Conic</a> with a sweep
|
|
of up to 90 degrees; in this case, set <a href='#SkPath_ConvertConicToQuads_pow2'>pow2</a> to one.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_ConvertConicToQuads_p0'><code><strong>p0</strong></code></a></td>
|
|
<td><a href='#Conic'>Conic</a> start <a href='SkPoint_Reference#Point'>Point</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_ConvertConicToQuads_p1'><code><strong>p1</strong></code></a></td>
|
|
<td><a href='#Conic'>Conic</a> control <a href='SkPoint_Reference#Point'>Point</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_ConvertConicToQuads_p2'><code><strong>p2</strong></code></a></td>
|
|
<td><a href='#Conic'>Conic</a> end <a href='SkPoint_Reference#Point'>Point</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_ConvertConicToQuads_w'><code><strong>w</strong></code></a></td>
|
|
<td><a href='#Conic'>Conic</a> weight</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_ConvertConicToQuads_pts'><code><strong>pts</strong></code></a></td>
|
|
<td>storage for <a href='#Quad'>Quad</a> array</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_ConvertConicToQuads_pow2'><code><strong>pow2</strong></code></a></td>
|
|
<td><a href='#Quad'>Quad</a> count, as power of two, normally 0 to 5 (1 to 32 <a href='#Quad'>Quad</a> curves)</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
number of <a href='#Quad'>Quad</a> curves written to <a href='#SkPath_ConvertConicToQuads_pts'>pts</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="3ba94448a4ba48f926e643baeb5b1016"><div>A pair of <a href='#Quad'>Quad</a> curves are drawn in red on top of the elliptical <a href='#Conic'>Conic</a> curve in black.
|
|
The middle curve is nearly circular. The top-right curve is parabolic, which can
|
|
be drawn exactly with a single <a href='#Quad'>Quad</a>.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Conic'>Conic</a> <a href='#Quad'>Quad</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_isRect'></a>
|
|
## isRect
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_isRect'>isRect</a>(<a href='SkRect_Reference#SkRect'>SkRect</a>* rect, bool* isClosed = nullptr, <a href='#SkPath_Direction'>Direction</a>* direction = nullptr) const
|
|
</pre>
|
|
|
|
Returns true if <a href='#Path'>Path</a> is equivalent to <a href='SkRect_Reference#Rect'>Rect</a> when filled.
|
|
If false: <a href='#SkPath_isRect_rect'>rect</a>, <a href='#SkPath_isRect_isClosed'>isClosed</a>, and <a href='#SkPath_isRect_direction'>direction</a> are unchanged.
|
|
If true: <a href='#SkPath_isRect_rect'>rect</a>, <a href='#SkPath_isRect_isClosed'>isClosed</a>, and <a href='#SkPath_isRect_direction'>direction</a> are written to if not nullptr.
|
|
|
|
<a href='#SkPath_isRect_rect'>rect</a> may be smaller than the <a href='#Path'>Path</a> bounds. <a href='#Path'>Path</a> bounds may include <a href='#SkPath_kMove_Verb'>kMove Verb</a> points
|
|
that do not alter the area drawn by the returned <a href='#SkPath_isRect_rect'>rect</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_isRect_rect'><code><strong>rect</strong></code></a></td>
|
|
<td>storage for bounds of <a href='SkRect_Reference#Rect'>Rect</a>; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_isRect_isClosed'><code><strong>isClosed</strong></code></a></td>
|
|
<td>storage set to true if <a href='#Path'>Path</a> is closed; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_isRect_direction'><code><strong>direction</strong></code></a></td>
|
|
<td>storage set to <a href='SkRect_Reference#Rect'>Rect</a> <a href='#SkPath_isRect_direction'>direction</a>; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Path'>Path</a> contains <a href='SkRect_Reference#Rect'>Rect</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="81a2aac1b8f0ff3d4c8d35ccb9149b16"><div>After <a href='#SkPath_addRect'>addRect</a>, <a href='#SkPath_isRect'>isRect</a> returns true. Following <a href='#SkPath_moveTo'>moveTo</a> permits <a href='#SkPath_isRect'>isRect</a> to return true, but
|
|
following <a href='#SkPath_lineTo'>lineTo</a> does not. <a href='#SkPath_addPoly'>addPoly</a> returns true even though <a href='#SkPath_isRect_rect'>rect</a> is not closed, and one
|
|
side of <a href='#SkPath_isRect_rect'>rect</a> is made up of consecutive line segments.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
empty is not rect
|
|
addRect is rect (10, 20, 30, 40); is closed; direction CW
|
|
moveTo is rect (10, 20, 30, 40); is closed; direction CW
|
|
lineTo is not rect
|
|
addPoly is rect (0, 0, 80, 80); is not closed; direction CCW
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_computeTightBounds'>computeTightBounds</a> <a href='#SkPath_conservativelyContainsRect'>conservativelyContainsRect</a> <a href='#SkPath_getBounds'>getBounds</a> <a href='#SkPath_isConvex'>isConvex</a> <a href='#SkPath_isLastContourClosed'>isLastContourClosed</a> <a href='#SkPath_isNestedFillRects'>isNestedFillRects</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_isNestedFillRects'></a>
|
|
## isNestedFillRects
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_isNestedFillRects'>isNestedFillRects</a>(<a href='SkRect_Reference#SkRect'>SkRect</a> rect[2], <a href='#SkPath_Direction'>Direction</a> dirs[2] = nullptr) const
|
|
</pre>
|
|
|
|
Returns true if <a href='#Path'>Path</a> is equivalent to nested <a href='SkRect_Reference#Rect'>Rect</a> pair when filled.
|
|
If false, <a href='#SkPath_isNestedFillRects_rect'>rect</a> and <a href='#SkPath_isNestedFillRects_dirs'>dirs</a> are unchanged.
|
|
If true, <a href='#SkPath_isNestedFillRects_rect'>rect</a> and <a href='#SkPath_isNestedFillRects_dirs'>dirs</a> are written to if not nullptr:
|
|
setting <a href='#SkPath_isNestedFillRects_rect'>rect</a>[0] to outer <a href='SkRect_Reference#Rect'>Rect</a>, and <a href='#SkPath_isNestedFillRects_rect'>rect</a>[1] to inner <a href='SkRect_Reference#Rect'>Rect</a>;
|
|
setting <a href='#SkPath_isNestedFillRects_dirs'>dirs</a>[0] to <a href='#SkPath_Direction'>Direction</a> of outer <a href='SkRect_Reference#Rect'>Rect</a>, and <a href='#SkPath_isNestedFillRects_dirs'>dirs</a>[1] to <a href='#SkPath_Direction'>Direction</a> of inner
|
|
<a href='SkRect_Reference#Rect'>Rect</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_isNestedFillRects_rect'><code><strong>rect</strong></code></a></td>
|
|
<td>storage for <a href='SkRect_Reference#Rect'>Rect</a> pair; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_isNestedFillRects_dirs'><code><strong>dirs</strong></code></a></td>
|
|
<td>storage for <a href='#SkPath_Direction'>Direction</a> pair; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Path'>Path</a> contains nested <a href='SkRect_Reference#Rect'>Rect</a> pair
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="77e4394caf9fa083c19c21c2462efe14">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
outer (7.5, 17.5, 32.5, 42.5); direction CW
|
|
inner (12.5, 22.5, 27.5, 37.5); direction CCW
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_computeTightBounds'>computeTightBounds</a> <a href='#SkPath_conservativelyContainsRect'>conservativelyContainsRect</a> <a href='#SkPath_getBounds'>getBounds</a> <a href='#SkPath_isConvex'>isConvex</a> <a href='#SkPath_isLastContourClosed'>isLastContourClosed</a> <a href='#SkPath_isRect'>isRect</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addRect'></a>
|
|
## addRect
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addRect'>addRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& rect, <a href='#SkPath_Direction'>Direction</a> dir = <a href='#SkPath_kCW_Direction'>kCW Direction</a>)
|
|
</pre>
|
|
|
|
Adds <a href='SkRect_Reference#Rect'>Rect</a> to <a href='#Path'>Path</a>, appending <a href='#SkPath_kMove_Verb'>kMove Verb</a>, three <a href='#SkPath_kLine_Verb'>kLine Verb</a>, and <a href='#SkPath_kClose_Verb'>kClose Verb</a>,
|
|
starting with top-left corner of <a href='SkRect_Reference#Rect'>Rect</a>; followed by top-right, bottom-right,
|
|
and bottom-left if <a href='#SkPath_addRect_dir'>dir</a> is <a href='#SkPath_kCW_Direction'>kCW Direction</a>; or followed by bottom-left,
|
|
bottom-right, and top-right if <a href='#SkPath_addRect_dir'>dir</a> is <a href='#SkPath_kCCW_Direction'>kCCW Direction</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addRect_rect'><code><strong>rect</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#Rect'>Rect</a> to add as a closed contour</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRect_dir'><code><strong>dir</strong></code></a></td>
|
|
<td><a href='#SkPath_Direction'>Direction</a> to wind added contour</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="0f841e4eaebb613b5069800567917c2d"><div>The left <a href='SkRect_Reference#Rect'>Rect</a> dashes starting at the top-left corner, to the right.
|
|
The right <a href='SkRect_Reference#Rect'>Rect</a> dashes starting at the top-left corner, towards the bottom.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas_drawRect'>SkCanvas::drawRect</a> <a href='#SkPath_Direction'>Direction</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addRect_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addRect'>addRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& rect, <a href='#SkPath_Direction'>Direction</a> dir, unsigned start)
|
|
</pre>
|
|
|
|
Adds <a href='SkRect_Reference#Rect'>Rect</a> to <a href='#Path'>Path</a>, appending <a href='#SkPath_kMove_Verb'>kMove Verb</a>, three <a href='#SkPath_kLine_Verb'>kLine Verb</a>, and <a href='#SkPath_kClose_Verb'>kClose Verb</a>.
|
|
If <a href='#SkPath_addRect_2_dir'>dir</a> is <a href='#SkPath_kCW_Direction'>kCW Direction</a>, <a href='SkRect_Reference#Rect'>Rect</a> corners are added clockwise; if <a href='#SkPath_addRect_2_dir'>dir</a> is
|
|
<a href='#SkPath_kCCW_Direction'>kCCW Direction</a>, <a href='SkRect_Reference#Rect'>Rect</a> corners are added counterclockwise.
|
|
<a href='#SkPath_addRect_2_start'>start</a> determines the first corner added.
|
|
|
|
| <a href='#SkPath_addRect_2_start'>start</a> | first corner |
|
|
| --- | --- |
|
|
| 0 | top-left |
|
|
| 1 | top-right |
|
|
| 2 | bottom-right |
|
|
| 3 | bottom-left |
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addRect_2_rect'><code><strong>rect</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#Rect'>Rect</a> to add as a closed contour</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRect_2_dir'><code><strong>dir</strong></code></a></td>
|
|
<td><a href='#SkPath_Direction'>Direction</a> to wind added contour</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRect_2_start'><code><strong>start</strong></code></a></td>
|
|
<td>initial corner of <a href='SkRect_Reference#Rect'>Rect</a> to add</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="9202430b3f4f5275af8eec5cc9d7baa8"><div>The arrow is just after the initial corner and points towards the next
|
|
corner appended to <a href='#Path'>Path</a>.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas_drawRect'>SkCanvas::drawRect</a> <a href='#SkPath_Direction'>Direction</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addRect_3'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addRect'>addRect</a>(<a href='undocumented#SkScalar'>SkScalar</a> left, <a href='undocumented#SkScalar'>SkScalar</a> top, <a href='undocumented#SkScalar'>SkScalar</a> right, <a href='undocumented#SkScalar'>SkScalar</a> bottom,
|
|
<a href='#SkPath_Direction'>Direction</a> dir = <a href='#SkPath_kCW_Direction'>kCW Direction</a>)
|
|
</pre>
|
|
|
|
Adds <a href='SkRect_Reference#Rect'>Rect</a> (<a href='#SkPath_addRect_3_left'>left</a>, <a href='#SkPath_addRect_3_top'>top</a>, <a href='#SkPath_addRect_3_right'>right</a>, <a href='#SkPath_addRect_3_bottom'>bottom</a>) to <a href='#Path'>Path</a>,
|
|
appending <a href='#SkPath_kMove_Verb'>kMove Verb</a>, three <a href='#SkPath_kLine_Verb'>kLine Verb</a>, and <a href='#SkPath_kClose_Verb'>kClose Verb</a>,
|
|
starting with <a href='#SkPath_addRect_3_top'>top</a>-<a href='#SkPath_addRect_3_left'>left</a> corner of <a href='SkRect_Reference#Rect'>Rect</a>; followed by <a href='#SkPath_addRect_3_top'>top</a>-<a href='#SkPath_addRect_3_right'>right</a>, <a href='#SkPath_addRect_3_bottom'>bottom</a>-<a href='#SkPath_addRect_3_right'>right</a>,
|
|
and <a href='#SkPath_addRect_3_bottom'>bottom</a>-<a href='#SkPath_addRect_3_left'>left</a> if <a href='#SkPath_addRect_3_dir'>dir</a> is <a href='#SkPath_kCW_Direction'>kCW Direction</a>; or followed by <a href='#SkPath_addRect_3_bottom'>bottom</a>-<a href='#SkPath_addRect_3_left'>left</a>,
|
|
<a href='#SkPath_addRect_3_bottom'>bottom</a>-<a href='#SkPath_addRect_3_right'>right</a>, and <a href='#SkPath_addRect_3_top'>top</a>-<a href='#SkPath_addRect_3_right'>right</a> if <a href='#SkPath_addRect_3_dir'>dir</a> is <a href='#SkPath_kCCW_Direction'>kCCW Direction</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addRect_3_left'><code><strong>left</strong></code></a></td>
|
|
<td>smaller x-axis value of <a href='SkRect_Reference#Rect'>Rect</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRect_3_top'><code><strong>top</strong></code></a></td>
|
|
<td>smaller y-axis value of <a href='SkRect_Reference#Rect'>Rect</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRect_3_right'><code><strong>right</strong></code></a></td>
|
|
<td>larger x-axis value of <a href='SkRect_Reference#Rect'>Rect</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRect_3_bottom'><code><strong>bottom</strong></code></a></td>
|
|
<td>larger y-axis value of <a href='SkRect_Reference#Rect'>Rect</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRect_3_dir'><code><strong>dir</strong></code></a></td>
|
|
<td><a href='#SkPath_Direction'>Direction</a> to wind added contour</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="3837827310e8b88b8c2e128ef9fbbd65"><div>The <a href='#SkPath_addRect_3_left'>left</a> <a href='SkRect_Reference#Rect'>Rect</a> dashes start at the <a href='#SkPath_addRect_3_top'>top</a>-<a href='#SkPath_addRect_3_left'>left</a> corner, and continue to the <a href='#SkPath_addRect_3_right'>right</a>.
|
|
The <a href='#SkPath_addRect_3_right'>right</a> <a href='SkRect_Reference#Rect'>Rect</a> dashes start at the <a href='#SkPath_addRect_3_top'>top</a>-<a href='#SkPath_addRect_3_left'>left</a> corner, and continue down.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas_drawRect'>SkCanvas::drawRect</a> <a href='#SkPath_Direction'>Direction</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addOval'></a>
|
|
## addOval
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addOval'>addOval</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& oval, <a href='#SkPath_Direction'>Direction</a> dir = <a href='#SkPath_kCW_Direction'>kCW Direction</a>)
|
|
</pre>
|
|
|
|
Adds <a href='undocumented#Oval'>Oval</a> to path, appending <a href='#SkPath_kMove_Verb'>kMove Verb</a>, four <a href='#SkPath_kConic_Verb'>kConic Verb</a>, and <a href='#SkPath_kClose_Verb'>kClose Verb</a>.
|
|
<a href='undocumented#Oval'>Oval</a> is upright ellipse bounded by <a href='SkRect_Reference#Rect'>Rect</a> <a href='#SkPath_addOval_oval'>oval</a> with radii equal to half <a href='#SkPath_addOval_oval'>oval</a> width
|
|
and half <a href='#SkPath_addOval_oval'>oval</a> height. <a href='undocumented#Oval'>Oval</a> begins at (<a href='#SkPath_addOval_oval'>oval</a>.fRight, <a href='#SkPath_addOval_oval'>oval</a>.centerY()) and continues
|
|
clockwise if <a href='#SkPath_addOval_dir'>dir</a> is <a href='#SkPath_kCW_Direction'>kCW Direction</a>, counterclockwise if <a href='#SkPath_addOval_dir'>dir</a> is <a href='#SkPath_kCCW_Direction'>kCCW Direction</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addOval_oval'><code><strong>oval</strong></code></a></td>
|
|
<td>bounds of ellipse added</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addOval_dir'><code><strong>dir</strong></code></a></td>
|
|
<td><a href='#SkPath_Direction'>Direction</a> to wind ellipse</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="cac84cf68e63a453c2a8b64c91537704"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas_drawOval'>SkCanvas::drawOval</a> <a href='#SkPath_Direction'>Direction</a> <a href='undocumented#Oval'>Oval</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addOval_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addOval'>addOval</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& oval, <a href='#SkPath_Direction'>Direction</a> dir, unsigned start)
|
|
</pre>
|
|
|
|
Adds <a href='undocumented#Oval'>Oval</a> to <a href='#Path'>Path</a>, appending <a href='#SkPath_kMove_Verb'>kMove Verb</a>, four <a href='#SkPath_kConic_Verb'>kConic Verb</a>, and <a href='#SkPath_kClose_Verb'>kClose Verb</a>.
|
|
<a href='undocumented#Oval'>Oval</a> is upright ellipse bounded by <a href='SkRect_Reference#Rect'>Rect</a> <a href='#SkPath_addOval_2_oval'>oval</a> with radii equal to half <a href='#SkPath_addOval_2_oval'>oval</a> width
|
|
and half <a href='#SkPath_addOval_2_oval'>oval</a> height. <a href='undocumented#Oval'>Oval</a> begins at <a href='#SkPath_addOval_2_start'>start</a> and continues
|
|
clockwise if <a href='#SkPath_addOval_2_dir'>dir</a> is <a href='#SkPath_kCW_Direction'>kCW Direction</a>, counterclockwise if <a href='#SkPath_addOval_2_dir'>dir</a> is <a href='#SkPath_kCCW_Direction'>kCCW Direction</a>.
|
|
|
|
| <a href='#SkPath_addOval_2_start'>start</a> | <a href='SkPoint_Reference#Point'>Point</a> |
|
|
| --- | --- |
|
|
| 0 | <a href='#SkPath_addOval_2_oval'>oval</a>.centerX(), <a href='#SkPath_addOval_2_oval'>oval</a>.fTop |
|
|
| 1 | <a href='#SkPath_addOval_2_oval'>oval</a>.fRight, <a href='#SkPath_addOval_2_oval'>oval</a>.centerY() |
|
|
| 2 | <a href='#SkPath_addOval_2_oval'>oval</a>.centerX(), <a href='#SkPath_addOval_2_oval'>oval</a>.fBottom |
|
|
| 3 | <a href='#SkPath_addOval_2_oval'>oval</a>.fLeft, <a href='#SkPath_addOval_2_oval'>oval</a>.centerY() |
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addOval_2_oval'><code><strong>oval</strong></code></a></td>
|
|
<td>bounds of ellipse added</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addOval_2_dir'><code><strong>dir</strong></code></a></td>
|
|
<td><a href='#SkPath_Direction'>Direction</a> to wind ellipse</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addOval_2_start'><code><strong>start</strong></code></a></td>
|
|
<td>index of initial point of ellipse</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="ab9753174060e4a551727ef3af12924d"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas_drawOval'>SkCanvas::drawOval</a> <a href='#SkPath_Direction'>Direction</a> <a href='undocumented#Oval'>Oval</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addCircle'></a>
|
|
## addCircle
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addCircle'>addCircle</a>(<a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y, <a href='undocumented#SkScalar'>SkScalar</a> radius, <a href='#SkPath_Direction'>Direction</a> dir = <a href='#SkPath_kCW_Direction'>kCW Direction</a>)
|
|
</pre>
|
|
|
|
Adds <a href='undocumented#Circle'>Circle</a> centered at (<a href='#SkPath_addCircle_x'>x</a>, <a href='#SkPath_addCircle_y'>y</a>) of size <a href='#SkPath_addCircle_radius'>radius</a> to <a href='#Path'>Path</a>, appending <a href='#SkPath_kMove_Verb'>kMove Verb</a>,
|
|
four <a href='#SkPath_kConic_Verb'>kConic Verb</a>, and <a href='#SkPath_kClose_Verb'>kClose Verb</a>. <a href='undocumented#Circle'>Circle</a> begins at:
|
|
(<a href='#SkPath_addCircle_x'>x</a> + <a href='#SkPath_addCircle_radius'>radius</a>, <a href='#SkPath_addCircle_y'>y</a>)
|
|
,
|
|
continuing
|
|
clockwise if <a href='#SkPath_addCircle_dir'>dir</a> is <a href='#SkPath_kCW_Direction'>kCW Direction</a>, and counterclockwise if <a href='#SkPath_addCircle_dir'>dir</a> is <a href='#SkPath_kCCW_Direction'>kCCW Direction</a>.
|
|
|
|
Has no effect if <a href='#SkPath_addCircle_radius'>radius</a> is zero or negative.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addCircle_x'><code><strong>x</strong></code></a></td>
|
|
<td>center of <a href='undocumented#Circle'>Circle</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addCircle_y'><code><strong>y</strong></code></a></td>
|
|
<td>center of <a href='undocumented#Circle'>Circle</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addCircle_radius'><code><strong>radius</strong></code></a></td>
|
|
<td>distance from center to edge</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addCircle_dir'><code><strong>dir</strong></code></a></td>
|
|
<td><a href='#SkPath_Direction'>Direction</a> to wind <a href='undocumented#Circle'>Circle</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="bd5286cb9a5e5c32cd980f72b8f400fb"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas_drawCircle'>SkCanvas::drawCircle</a><sup><a href='SkCanvas_Reference#SkCanvas_drawCircle_2'>[2]</a></sup> <a href='#SkPath_Direction'>Direction</a> <a href='undocumented#Circle'>Circle</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addArc'></a>
|
|
## addArc
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addArc'>addArc</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& oval, <a href='undocumented#SkScalar'>SkScalar</a> startAngle, <a href='undocumented#SkScalar'>SkScalar</a> sweepAngle)
|
|
</pre>
|
|
|
|
Appends <a href='#Arc'>Arc</a> to <a href='#Path'>Path</a>, as the start of new <a href='#Contour'>Contour</a>. <a href='#Arc'>Arc</a> added is part of ellipse
|
|
bounded by <a href='#SkPath_addArc_oval'>oval</a>, from <a href='#SkPath_addArc_startAngle'>startAngle</a> through <a href='#SkPath_addArc_sweepAngle'>sweepAngle</a>. Both <a href='#SkPath_addArc_startAngle'>startAngle</a> and
|
|
<a href='#SkPath_addArc_sweepAngle'>sweepAngle</a> are measured in degrees, where zero degrees is aligned with the
|
|
positive x-axis, and positive sweeps extends <a href='#Arc'>Arc</a> clockwise.
|
|
|
|
If <a href='#SkPath_addArc_sweepAngle'>sweepAngle</a> <= -360, or <a href='#SkPath_addArc_sweepAngle'>sweepAngle</a> >= 360; and <a href='#SkPath_addArc_startAngle'>startAngle</a> modulo 90 is nearly
|
|
zero, append <a href='undocumented#Oval'>Oval</a> instead of <a href='#Arc'>Arc</a>. Otherwise, <a href='#SkPath_addArc_sweepAngle'>sweepAngle</a> values are treated
|
|
modulo 360, and <a href='#Arc'>Arc</a> may or may not draw depending on numeric rounding.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addArc_oval'><code><strong>oval</strong></code></a></td>
|
|
<td>bounds of ellipse containing <a href='#Arc'>Arc</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addArc_startAngle'><code><strong>startAngle</strong></code></a></td>
|
|
<td>starting angle of <a href='#Arc'>Arc</a> in degrees</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addArc_sweepAngle'><code><strong>sweepAngle</strong></code></a></td>
|
|
<td>sweep, in degrees. Positive is clockwise; treated modulo 360</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="9cf5122475624e4cf39f06c698f80b1a"><div>The middle row of the left and right columns draw differently from the entries
|
|
above and below because <a href='#SkPath_addArc_sweepAngle'>sweepAngle</a> is outside of the range of +/-360,
|
|
and <a href='#SkPath_addArc_startAngle'>startAngle</a> modulo 90 is not zero.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Arc'>Arc</a> <a href='#SkPath_arcTo'>arcTo</a><sup><a href='#SkPath_arcTo_2'>[2]</a></sup><sup><a href='#SkPath_arcTo_3'>[3]</a></sup><sup><a href='#SkPath_arcTo_4'>[4]</a></sup><sup><a href='#SkPath_arcTo_5'>[5]</a></sup> <a href='SkCanvas_Reference#SkCanvas_drawArc'>SkCanvas::drawArc</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addRoundRect'></a>
|
|
## addRoundRect
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addRoundRect'>addRoundRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& rect, <a href='undocumented#SkScalar'>SkScalar</a> rx, <a href='undocumented#SkScalar'>SkScalar</a> ry, <a href='#SkPath_Direction'>Direction</a> dir = <a href='#SkPath_kCW_Direction'>kCW Direction</a>)
|
|
</pre>
|
|
|
|
Appends <a href='SkRRect_Reference#RRect'>Round Rect</a> to <a href='#Path'>Path</a>, creating a new closed <a href='#Contour'>Contour</a>. <a href='SkRRect_Reference#RRect'>Round Rect</a> has bounds
|
|
equal to <a href='#SkPath_addRoundRect_rect'>rect</a>; each corner is 90 degrees of an ellipse with radii (<a href='#SkPath_addRoundRect_rx'>rx</a>, <a href='#SkPath_addRoundRect_ry'>ry</a>). If
|
|
<a href='#SkPath_addRoundRect_dir'>dir</a> is <a href='#SkPath_kCW_Direction'>kCW Direction</a>, <a href='SkRRect_Reference#RRect'>Round Rect</a> starts at top-left of the lower-left corner and
|
|
winds clockwise. If <a href='#SkPath_addRoundRect_dir'>dir</a> is <a href='#SkPath_kCCW_Direction'>kCCW Direction</a>, <a href='SkRRect_Reference#RRect'>Round Rect</a> starts at the bottom-left
|
|
of the upper-left corner and winds counterclockwise.
|
|
|
|
If either <a href='#SkPath_addRoundRect_rx'>rx</a> or <a href='#SkPath_addRoundRect_ry'>ry</a> is too large, <a href='#SkPath_addRoundRect_rx'>rx</a> and <a href='#SkPath_addRoundRect_ry'>ry</a> are scaled uniformly until the
|
|
corners fit. If <a href='#SkPath_addRoundRect_rx'>rx</a> or <a href='#SkPath_addRoundRect_ry'>ry</a> is less than or equal to zero, <a href='#SkPath_addRoundRect'>addRoundRect</a> appends
|
|
<a href='SkRect_Reference#Rect'>Rect</a> <a href='#SkPath_addRoundRect_rect'>rect</a> to <a href='#Path'>Path</a>.
|
|
|
|
After appending, <a href='#Path'>Path</a> may be empty, or may contain: <a href='SkRect_Reference#Rect'>Rect</a>, <a href='undocumented#Oval'>Oval</a>, or RoundRect.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addRoundRect_rect'><code><strong>rect</strong></code></a></td>
|
|
<td>bounds of <a href='SkRRect_Reference#RRect'>Round Rect</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRoundRect_rx'><code><strong>rx</strong></code></a></td>
|
|
<td>x-axis radius of rounded corners on the <a href='SkRRect_Reference#RRect'>Round Rect</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRoundRect_ry'><code><strong>ry</strong></code></a></td>
|
|
<td>y-axis radius of rounded corners on the <a href='SkRRect_Reference#RRect'>Round Rect</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRoundRect_dir'><code><strong>dir</strong></code></a></td>
|
|
<td><a href='#SkPath_Direction'>Direction</a> to wind <a href='SkRRect_Reference#RRect'>Round Rect</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="24736f685f265cf533f1700c042db353"><div>If either radius is zero, path contains <a href='SkRect_Reference#Rect'>Rect</a> and is drawn red.
|
|
If sides are only radii, path contains <a href='undocumented#Oval'>Oval</a> and is drawn blue.
|
|
All remaining path draws are convex, and are drawn in gray; no
|
|
paths constructed from <a href='#SkPath_addRoundRect'>addRoundRect</a> are concave, so none are
|
|
drawn in green.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_addRRect'>addRRect</a><sup><a href='#SkPath_addRRect_2'>[2]</a></sup> <a href='SkCanvas_Reference#SkCanvas_drawRoundRect'>SkCanvas::drawRoundRect</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addRoundRect_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addRoundRect'>addRoundRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& rect, const <a href='undocumented#SkScalar'>SkScalar</a> radii[], <a href='#SkPath_Direction'>Direction</a> dir = <a href='#SkPath_kCW_Direction'>kCW Direction</a>)
|
|
</pre>
|
|
|
|
Appends <a href='SkRRect_Reference#RRect'>Round Rect</a> to <a href='#Path'>Path</a>, creating a new closed <a href='#Contour'>Contour</a>. <a href='SkRRect_Reference#RRect'>Round Rect</a> has bounds
|
|
equal to <a href='#SkPath_addRoundRect_2_rect'>rect</a>; each corner is 90 degrees of an ellipse with <a href='#SkPath_addRoundRect_2_radii'>radii</a> from the
|
|
array.
|
|
|
|
| <a href='#SkPath_addRoundRect_2_radii'>radii</a> index | location |
|
|
| --- | --- |
|
|
| 0 | x-axis radius of top-left corner |
|
|
| 1 | y-axis radius of top-left corner |
|
|
| 2 | x-axis radius of top-right corner |
|
|
| 3 | y-axis radius of top-right corner |
|
|
| 4 | x-axis radius of bottom-right corner |
|
|
| 5 | y-axis radius of bottom-right corner |
|
|
| 6 | x-axis radius of bottom-left corner |
|
|
| 7 | y-axis radius of bottom-left corner |
|
|
|
|
If <a href='#SkPath_addRoundRect_2_dir'>dir</a> is <a href='#SkPath_kCW_Direction'>kCW Direction</a>, <a href='SkRRect_Reference#RRect'>Round Rect</a> starts at top-left of the lower-left corner
|
|
and winds clockwise. If <a href='#SkPath_addRoundRect_2_dir'>dir</a> is <a href='#SkPath_kCCW_Direction'>kCCW Direction</a>, <a href='SkRRect_Reference#RRect'>Round Rect</a> starts at the
|
|
bottom-left of the upper-left corner and winds counterclockwise.
|
|
|
|
If both <a href='#SkPath_addRoundRect_2_radii'>radii</a> on any side of <a href='#SkPath_addRoundRect_2_rect'>rect</a> exceed its length, all <a href='#SkPath_addRoundRect_2_radii'>radii</a> are scaled
|
|
uniformly until the corners fit. If either radius of a corner is less than or
|
|
equal to zero, both are treated as zero.
|
|
|
|
After appending, <a href='#Path'>Path</a> may be empty, or may contain: <a href='SkRect_Reference#Rect'>Rect</a>, <a href='undocumented#Oval'>Oval</a>, or RoundRect.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addRoundRect_2_rect'><code><strong>rect</strong></code></a></td>
|
|
<td>bounds of <a href='SkRRect_Reference#RRect'>Round Rect</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRoundRect_2_radii'><code><strong>radii</strong></code></a></td>
|
|
<td>array of 8 <a href='undocumented#SkScalar'>SkScalar</a> values, a radius pair for each corner</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRoundRect_2_dir'><code><strong>dir</strong></code></a></td>
|
|
<td><a href='#SkPath_Direction'>Direction</a> to wind <a href='SkRRect_Reference#RRect'>Round Rect</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="c43d70606b4ee464d2befbcf448c5e73"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_addRRect'>addRRect</a><sup><a href='#SkPath_addRRect_2'>[2]</a></sup> <a href='SkCanvas_Reference#SkCanvas_drawRoundRect'>SkCanvas::drawRoundRect</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addRRect'></a>
|
|
## addRRect
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addRRect'>addRRect</a>(const <a href='SkRRect_Reference#SkRRect'>SkRRect</a>& rrect, <a href='#SkPath_Direction'>Direction</a> dir = <a href='#SkPath_kCW_Direction'>kCW Direction</a>)
|
|
</pre>
|
|
|
|
Adds <a href='#SkPath_addRRect_rrect'>rrect</a> to <a href='#Path'>Path</a>, creating a new closed <a href='#Contour'>Contour</a>. If
|
|
<a href='#SkPath_addRRect_dir'>dir</a> is <a href='#SkPath_kCW_Direction'>kCW Direction</a>, <a href='#SkPath_addRRect_rrect'>rrect</a> starts at top-left of the lower-left corner and
|
|
winds clockwise. If <a href='#SkPath_addRRect_dir'>dir</a> is <a href='#SkPath_kCCW_Direction'>kCCW Direction</a>, <a href='#SkPath_addRRect_rrect'>rrect</a> starts at the bottom-left
|
|
of the upper-left corner and winds counterclockwise.
|
|
|
|
After appending, <a href='#Path'>Path</a> may be empty, or may contain: <a href='SkRect_Reference#Rect'>Rect</a>, <a href='undocumented#Oval'>Oval</a>, or <a href='SkRRect_Reference#RRect'>Round Rect</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addRRect_rrect'><code><strong>rrect</strong></code></a></td>
|
|
<td>bounds and radii of rounded rectangle</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRRect_dir'><code><strong>dir</strong></code></a></td>
|
|
<td><a href='#SkPath_Direction'>Direction</a> to wind <a href='SkRRect_Reference#RRect'>Round Rect</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="d9ecd58081b5bc77a157636fcb345dc6"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_addRoundRect'>addRoundRect</a><sup><a href='#SkPath_addRoundRect_2'>[2]</a></sup> <a href='SkCanvas_Reference#SkCanvas_drawRRect'>SkCanvas::drawRRect</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addRRect_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addRRect'>addRRect</a>(const <a href='SkRRect_Reference#SkRRect'>SkRRect</a>& rrect, <a href='#SkPath_Direction'>Direction</a> dir, unsigned start)
|
|
</pre>
|
|
|
|
Adds <a href='#SkPath_addRRect_2_rrect'>rrect</a> to <a href='#Path'>Path</a>, creating a new closed <a href='#Contour'>Contour</a>. If <a href='#SkPath_addRRect_2_dir'>dir</a> is <a href='#SkPath_kCW_Direction'>kCW Direction</a>, <a href='#SkPath_addRRect_2_rrect'>rrect</a>
|
|
winds clockwise; if <a href='#SkPath_addRRect_2_dir'>dir</a> is <a href='#SkPath_kCCW_Direction'>kCCW Direction</a>, <a href='#SkPath_addRRect_2_rrect'>rrect</a> winds counterclockwise.
|
|
<a href='#SkPath_addRRect_2_start'>start</a> determines the first point of <a href='#SkPath_addRRect_2_rrect'>rrect</a> to add.
|
|
|
|
| <a href='#SkPath_addRRect_2_start'>start</a> | location |
|
|
| --- | --- |
|
|
| 0 | right of top-left corner |
|
|
| 1 | left of top-right corner |
|
|
| 2 | bottom of top-right corner |
|
|
| 3 | top of bottom-right corner |
|
|
| 4 | left of bottom-right corner |
|
|
| 5 | right of bottom-left corner |
|
|
| 6 | top of bottom-left corner |
|
|
| 7 | bottom of top-left corner |
|
|
|
|
After appending, <a href='#Path'>Path</a> may be empty, or may contain: <a href='SkRect_Reference#Rect'>Rect</a>, <a href='undocumented#Oval'>Oval</a>, or <a href='SkRRect_Reference#RRect'>Round Rect</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addRRect_2_rrect'><code><strong>rrect</strong></code></a></td>
|
|
<td>bounds and radii of rounded rectangle</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRRect_2_dir'><code><strong>dir</strong></code></a></td>
|
|
<td><a href='#SkPath_Direction'>Direction</a> to wind <a href='SkRRect_Reference#RRect'>Round Rect</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addRRect_2_start'><code><strong>start</strong></code></a></td>
|
|
<td>index of initial point of <a href='SkRRect_Reference#RRect'>Round Rect</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="0e6ca92d854035da29e89ad81d85ff85"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_addRoundRect'>addRoundRect</a><sup><a href='#SkPath_addRoundRect_2'>[2]</a></sup> <a href='SkCanvas_Reference#SkCanvas_drawRRect'>SkCanvas::drawRRect</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addPoly'></a>
|
|
## addPoly
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addPoly'>addPoly</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> pts[], int count, bool close)
|
|
</pre>
|
|
|
|
Adds <a href='#Contour'>Contour</a> created from <a href='undocumented#Line'>Line</a> array, adding (<a href='#SkPath_addPoly_count'>count</a> - 1) <a href='undocumented#Line'>Line</a> segments.
|
|
<a href='#Contour'>Contour</a> added starts at <a href='#SkPath_addPoly_pts'>pts</a>[0], then adds a line for every additional <a href='SkPoint_Reference#Point'>Point</a>
|
|
in <a href='#SkPath_addPoly_pts'>pts</a> array. If close is true, appends <a href='#SkPath_kClose_Verb'>kClose Verb</a> to <a href='#Path'>Path</a>, connecting
|
|
<a href='#SkPath_addPoly_pts'>pts</a>[<a href='#SkPath_addPoly_count'>count</a> - 1] and <a href='#SkPath_addPoly_pts'>pts</a>[0].
|
|
|
|
If <a href='#SkPath_addPoly_count'>count</a> is zero, append <a href='#SkPath_kMove_Verb'>kMove Verb</a> to path.
|
|
Has no effect if <a href='#SkPath_addPoly_count'>count</a> is less than one.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addPoly_pts'><code><strong>pts</strong></code></a></td>
|
|
<td>array of <a href='undocumented#Line'>Line</a> sharing end and start <a href='SkPoint_Reference#Point'>Point</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addPoly_count'><code><strong>count</strong></code></a></td>
|
|
<td>length of <a href='SkPoint_Reference#Point'>Point</a> array</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addPoly_close'><code><strong>close</strong></code></a></td>
|
|
<td>true to add <a href='undocumented#Line'>Line</a> connecting <a href='#Contour'>Contour</a> end and start</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="182b3999772f330f3b0b891b492634ae"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas_drawPoints'>SkCanvas::drawPoints</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addPoly_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addPoly'>addPoly</a>(const std::initializer_list<<a href='SkPoint_Reference#SkPoint'>SkPoint</a>>& list, bool close)
|
|
</pre>
|
|
|
|
Adds <a href='#Contour'>Contour</a> created from <a href='#SkPath_addPoly_2_list'>list</a>. <a href='#Contour'>Contour</a> added starts at <a href='#SkPath_addPoly_2_list'>list</a>[0], then adds a line
|
|
for every additional <a href='SkPoint_Reference#Point'>Point</a> in <a href='#SkPath_addPoly_2_list'>list</a>. If close is true, appends <a href='#SkPath_kClose_Verb'>kClose Verb</a> to <a href='#Path'>Path</a>,
|
|
connecting last and first <a href='SkPoint_Reference#Point'>Point</a> in <a href='#SkPath_addPoly_2_list'>list</a>.
|
|
|
|
If <a href='#SkPath_addPoly_2_list'>list</a> is empty, append <a href='#SkPath_kMove_Verb'>kMove Verb</a> to path.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addPoly_2_list'><code><strong>list</strong></code></a></td>
|
|
<td>array of <a href='SkPoint_Reference#Point'>Points</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addPoly_2_close'><code><strong>close</strong></code></a></td>
|
|
<td>true to add <a href='undocumented#Line'>Line</a> connecting <a href='#Contour'>Contour</a> end and start</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="1a6b69acad5ceafede3c5984ec6634cb"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas_drawPoints'>SkCanvas::drawPoints</a>
|
|
|
|
---
|
|
|
|
## <a name='SkPath_AddPathMode'>Enum SkPath::AddPathMode</a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
enum <a href='#SkPath_AddPathMode'>AddPathMode</a> {
|
|
<a href='#SkPath_kAppend_AddPathMode'>kAppend AddPathMode</a>,
|
|
<a href='#SkPath_kExtend_AddPathMode'>kExtend AddPathMode</a>,
|
|
};
|
|
</pre>
|
|
|
|
<a href='#SkPath_AddPathMode'>AddPathMode</a> chooses how <a href='#SkPath_addPath'>addPath</a> appends. Adding one <a href='#Path'>Path</a> to another can extend
|
|
the last <a href='#Contour'>Contour</a> or start a new <a href='#Contour'>Contour</a>.
|
|
|
|
### Constants
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Const</th>
|
|
<th style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>Value</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kAppend_AddPathMode'><code>SkPath::kAppend_AddPathMode</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>#Line # appended to destination unaltered ##</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
<a href='#Path'>Path</a> <a href='#Verb'>Verbs</a>, <a href='SkPoint_Reference#Point'>Points</a>, and <a href='#Conic_Weight'>Conic Weights</a> are appended to destination unaltered.
|
|
Since <a href='#Path'>Path</a> <a href='#Verb_Array'>Verb Array</a> begins with <a href='#SkPath_kMove_Verb'>kMove Verb</a> if src is not empty, this
|
|
starts a new <a href='#Contour'>Contour</a>.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kExtend_AddPathMode'><code>SkPath::kExtend_AddPathMode</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>#Line # add line if prior Contour is not closed ##</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
If destination is closed or empty, start a new <a href='#Contour'>Contour</a>. If destination
|
|
is not empty, add <a href='undocumented#Line'>Line</a> from <a href='#Last_Point'>Last Point</a> to added <a href='#Path'>Path</a> first <a href='SkPoint_Reference#Point'>Point</a>. Skip added
|
|
<a href='#Path'>Path</a> initial <a href='#SkPath_kMove_Verb'>kMove Verb</a>, then append remining <a href='#Verb'>Verbs</a>, <a href='SkPoint_Reference#Point'>Points</a>, and <a href='#Conic_Weight'>Conic Weights</a>.
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="801b02e74c64aafdb734f2e5cf3e5ab0"><div>test is built from path, open on the top row, and closed on the bottom row.
|
|
The left column uses <a href='#SkPath_kAppend_AddPathMode'>kAppend AddPathMode</a>; the right uses <a href='#SkPath_kExtend_AddPathMode'>kExtend AddPathMode</a>.
|
|
The top right composition is made up of one contour; the other three have two.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_addPath'>addPath</a><sup><a href='#SkPath_addPath_2'>[2]</a></sup><sup><a href='#SkPath_addPath_3'>[3]</a></sup> <a href='#SkPath_reverseAddPath'>reverseAddPath</a>
|
|
|
|
<a name='SkPath_addPath'></a>
|
|
## addPath
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addPath'>addPath</a>(const <a href='#SkPath'>SkPath</a>& src, <a href='undocumented#SkScalar'>SkScalar</a> dx, <a href='undocumented#SkScalar'>SkScalar</a> dy, <a href='#SkPath_AddPathMode'>AddPathMode</a> mode = <a href='#SkPath_kAppend_AddPathMode'>kAppend AddPathMode</a>)
|
|
</pre>
|
|
|
|
Appends <a href='#SkPath_addPath_src'>src</a> to <a href='#Path'>Path</a>, offset by (<a href='#SkPath_addPath_dx'>dx</a>, <a href='#SkPath_addPath_dy'>dy</a>).
|
|
|
|
If <a href='#SkPath_addPath_mode'>mode</a> is <a href='#SkPath_kAppend_AddPathMode'>kAppend AddPathMode</a>, <a href='#SkPath_addPath_src'>src</a> <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Conic Weights</a> are
|
|
added unaltered. If <a href='#SkPath_addPath_mode'>mode</a> is <a href='#SkPath_kExtend_AddPathMode'>kExtend AddPathMode</a>, add <a href='undocumented#Line'>Line</a> before appending
|
|
<a href='#Verb'>Verbs</a>, <a href='SkPoint_Reference#Point'>Points</a>, and <a href='#Conic_Weight'>Conic Weights</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addPath_src'><code><strong>src</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> <a href='#Verb'>Verbs</a>, <a href='SkPoint_Reference#Point'>Points</a>, and <a href='#Conic_Weight'>Conic Weights</a> to add</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addPath_dx'><code><strong>dx</strong></code></a></td>
|
|
<td>offset added to <a href='#SkPath_addPath_src'>src</a> <a href='#Point_Array'>Point Array</a> x-axis coordinates</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addPath_dy'><code><strong>dy</strong></code></a></td>
|
|
<td>offset added to <a href='#SkPath_addPath_src'>src</a> <a href='#Point_Array'>Point Array</a> y-axis coordinates</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addPath_mode'><code><strong>mode</strong></code></a></td>
|
|
<td><a href='#SkPath_kAppend_AddPathMode'>kAppend AddPathMode</a> or <a href='#SkPath_kExtend_AddPathMode'>kExtend AddPathMode</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="c416bddfe286628974e1c7f0fd66f3f4"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_AddPathMode'>AddPathMode</a> <a href='#SkPath_offset'>offset</a><sup><a href='#SkPath_offset_2'>[2]</a></sup> <a href='#SkPath_reverseAddPath'>reverseAddPath</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addPath_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addPath'>addPath</a>(const <a href='#SkPath'>SkPath</a>& src, <a href='#SkPath_AddPathMode'>AddPathMode</a> mode = <a href='#SkPath_kAppend_AddPathMode'>kAppend AddPathMode</a>)
|
|
</pre>
|
|
|
|
Appends <a href='#SkPath_addPath_2_src'>src</a> to <a href='#Path'>Path</a>.
|
|
|
|
If <a href='#SkPath_addPath_2_mode'>mode</a> is <a href='#SkPath_kAppend_AddPathMode'>kAppend AddPathMode</a>, <a href='#SkPath_addPath_2_src'>src</a> <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Conic Weights</a> are
|
|
added unaltered. If <a href='#SkPath_addPath_2_mode'>mode</a> is <a href='#SkPath_kExtend_AddPathMode'>kExtend AddPathMode</a>, add <a href='undocumented#Line'>Line</a> before appending
|
|
<a href='#Verb'>Verbs</a>, <a href='SkPoint_Reference#Point'>Points</a>, and <a href='#Conic_Weight'>Conic Weights</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addPath_2_src'><code><strong>src</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> <a href='#Verb'>Verbs</a>, <a href='SkPoint_Reference#Point'>Points</a>, and <a href='#Conic_Weight'>Conic Weights</a> to add</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addPath_2_mode'><code><strong>mode</strong></code></a></td>
|
|
<td><a href='#SkPath_kAppend_AddPathMode'>kAppend AddPathMode</a> or <a href='#SkPath_kExtend_AddPathMode'>kExtend AddPathMode</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="84b2d1c0fc29f1b35e855b6fc6672f9e"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_AddPathMode'>AddPathMode</a> <a href='#SkPath_reverseAddPath'>reverseAddPath</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_addPath_3'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_addPath'>addPath</a>(const <a href='#SkPath'>SkPath</a>& src, const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>& matrix, <a href='#SkPath_AddPathMode'>AddPathMode</a> mode = <a href='#SkPath_kAppend_AddPathMode'>kAppend AddPathMode</a>)
|
|
</pre>
|
|
|
|
Appends <a href='#SkPath_addPath_3_src'>src</a> to <a href='#Path'>Path</a>, transformed by <a href='#SkPath_addPath_3_matrix'>matrix</a>. Transformed curves may have different
|
|
<a href='#Verb'>Verbs</a>, <a href='SkPoint_Reference#Point'>Points</a>, and <a href='#Conic_Weight'>Conic Weights</a>.
|
|
|
|
If <a href='#SkPath_addPath_3_mode'>mode</a> is <a href='#SkPath_kAppend_AddPathMode'>kAppend AddPathMode</a>, <a href='#SkPath_addPath_3_src'>src</a> <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Conic Weights</a> are
|
|
added unaltered. If <a href='#SkPath_addPath_3_mode'>mode</a> is <a href='#SkPath_kExtend_AddPathMode'>kExtend AddPathMode</a>, add <a href='undocumented#Line'>Line</a> before appending
|
|
<a href='#Verb'>Verbs</a>, <a href='SkPoint_Reference#Point'>Points</a>, and <a href='#Conic_Weight'>Conic Weights</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_addPath_3_src'><code><strong>src</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> <a href='#Verb'>Verbs</a>, <a href='SkPoint_Reference#Point'>Points</a>, and <a href='#Conic_Weight'>Conic Weights</a> to add</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addPath_3_matrix'><code><strong>matrix</strong></code></a></td>
|
|
<td>transform applied to <a href='#SkPath_addPath_3_src'>src</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_addPath_3_mode'><code><strong>mode</strong></code></a></td>
|
|
<td><a href='#SkPath_kAppend_AddPathMode'>kAppend AddPathMode</a> or <a href='#SkPath_kExtend_AddPathMode'>kExtend AddPathMode</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="3a90a91030f7289d5df0671d342dbbad"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_AddPathMode'>AddPathMode</a> <a href='#SkPath_transform'>transform</a><sup><a href='#SkPath_transform_2'>[2]</a></sup> <a href='#SkPath_offset'>offset</a><sup><a href='#SkPath_offset_2'>[2]</a></sup> <a href='#SkPath_reverseAddPath'>reverseAddPath</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_reverseAddPath'></a>
|
|
## reverseAddPath
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath'>SkPath</a>& <a href='#SkPath_reverseAddPath'>reverseAddPath</a>(const <a href='#SkPath'>SkPath</a>& src)
|
|
</pre>
|
|
|
|
Appends <a href='#SkPath_reverseAddPath_src'>src</a> to <a href='#Path'>Path</a>, from back to front.
|
|
Reversed <a href='#SkPath_reverseAddPath_src'>src</a> always appends a new <a href='#Contour'>Contour</a> to <a href='#Path'>Path</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_reverseAddPath_src'><code><strong>src</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> <a href='#Verb'>Verbs</a>, <a href='SkPoint_Reference#Point'>Points</a>, and <a href='#Conic_Weight'>Conic Weights</a> to add</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
reference to <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="5e8513f073db09acde3ff616f6426e3d"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_AddPathMode'>AddPathMode</a> <a href='#SkPath_transform'>transform</a><sup><a href='#SkPath_transform_2'>[2]</a></sup> <a href='#SkPath_offset'>offset</a><sup><a href='#SkPath_offset_2'>[2]</a></sup> <a href='#SkPath_addPath'>addPath</a><sup><a href='#SkPath_addPath_2'>[2]</a></sup><sup><a href='#SkPath_addPath_3'>[3]</a></sup>
|
|
|
|
---
|
|
|
|
<a name='SkPath_offset'></a>
|
|
## offset
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_offset'>offset</a>(<a href='undocumented#SkScalar'>SkScalar</a> dx, <a href='undocumented#SkScalar'>SkScalar</a> dy, <a href='#SkPath'>SkPath</a>* dst) const
|
|
</pre>
|
|
|
|
Offsets <a href='#Point_Array'>Point Array</a> by (<a href='#SkPath_offset_dx'>dx</a>, <a href='#SkPath_offset_dy'>dy</a>). Offset <a href='#Path'>Path</a> replaces <a href='#SkPath_offset_dst'>dst</a>.
|
|
If <a href='#SkPath_offset_dst'>dst</a> is nullptr, <a href='#Path'>Path</a> is replaced by offset data.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_offset_dx'><code><strong>dx</strong></code></a></td>
|
|
<td>offset added to <a href='#Point_Array'>Point Array</a> x-axis coordinates</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_offset_dy'><code><strong>dy</strong></code></a></td>
|
|
<td>offset added to <a href='#Point_Array'>Point Array</a> y-axis coordinates</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_offset_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>overwritten, translated copy of <a href='#Path'>Path</a>; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="1d1892196ba5bda257df4f3351abd084"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_addPath'>addPath</a><sup><a href='#SkPath_addPath_2'>[2]</a></sup><sup><a href='#SkPath_addPath_3'>[3]</a></sup> <a href='#SkPath_transform'>transform</a><sup><a href='#SkPath_transform_2'>[2]</a></sup>
|
|
|
|
---
|
|
|
|
## <a name='Transform'>Transform</a>
|
|
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_offset'>offset</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>translates <a href='#Point_Array'>Point Array</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_offset'>offset(SkScalar dx, SkScalar dy, SkPath* dst)</a> const</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_offset_2'>offset(SkScalar dx, SkScalar dy)</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_transform'>transform</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>applies <a href='SkMatrix_Reference#Matrix'>Matrix</a> to <a href='#Point_Array'>Point Array</a> and <a href='#Conic_Weight'>Weights</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_transform'>transform(const SkMatrix& matrix, SkPath* dst)</a> const</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_transform_2'>transform(const SkMatrix& matrix)</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
<a name='SkPath_offset_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_offset'>offset</a>(<a href='undocumented#SkScalar'>SkScalar</a> dx, <a href='undocumented#SkScalar'>SkScalar</a> dy)
|
|
</pre>
|
|
|
|
Offsets <a href='#Point_Array'>Point Array</a> by (<a href='#SkPath_offset_2_dx'>dx</a>, <a href='#SkPath_offset_2_dy'>dy</a>). <a href='#Path'>Path</a> is replaced by offset data.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_offset_2_dx'><code><strong>dx</strong></code></a></td>
|
|
<td>offset added to <a href='#Point_Array'>Point Array</a> x-axis coordinates</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_offset_2_dy'><code><strong>dy</strong></code></a></td>
|
|
<td>offset added to <a href='#Point_Array'>Point Array</a> y-axis coordinates</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="5188d77585715db30bef228f2dfbcccd"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_addPath'>addPath</a><sup><a href='#SkPath_addPath_2'>[2]</a></sup><sup><a href='#SkPath_addPath_3'>[3]</a></sup> <a href='#SkPath_transform'>transform</a><sup><a href='#SkPath_transform_2'>[2]</a></sup> <a href='SkCanvas_Reference#SkCanvas_translate'>SkCanvas::translate()</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_transform'></a>
|
|
## transform
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_transform'>transform</a>(const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>& matrix, <a href='#SkPath'>SkPath</a>* dst) const
|
|
</pre>
|
|
|
|
Transforms <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and weight by <a href='#SkPath_transform_matrix'>matrix</a>.
|
|
transform may change <a href='#Verb'>Verbs</a> and increase their number.
|
|
Transformed <a href='#Path'>Path</a> replaces <a href='#SkPath_transform_dst'>dst</a>; if <a href='#SkPath_transform_dst'>dst</a> is nullptr, original data
|
|
is replaced.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_transform_matrix'><code><strong>matrix</strong></code></a></td>
|
|
<td><a href='SkMatrix_Reference#Matrix'>Matrix</a> to apply to <a href='#Path'>Path</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_transform_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>overwritten, transformed copy of <a href='#Path'>Path</a>; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="99761add116ce3b0730557224c1b0105"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_addPath'>addPath</a><sup><a href='#SkPath_addPath_2'>[2]</a></sup><sup><a href='#SkPath_addPath_3'>[3]</a></sup> <a href='#SkPath_offset'>offset</a><sup><a href='#SkPath_offset_2'>[2]</a></sup> <a href='SkCanvas_Reference#SkCanvas_concat'>SkCanvas::concat()</a> <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_transform_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_transform'>transform</a>(const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>& matrix)
|
|
</pre>
|
|
|
|
Transforms <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and weight by <a href='#SkPath_transform_2_matrix'>matrix</a>.
|
|
transform may change <a href='#Verb'>Verbs</a> and increase their number.
|
|
<a href='#Path'>Path</a> is replaced by transformed data.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_transform_2_matrix'><code><strong>matrix</strong></code></a></td>
|
|
<td><a href='SkMatrix_Reference#Matrix'>Matrix</a> to apply to <a href='#Path'>Path</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="c40979a3b92a30cfb7bae36abcc1d805"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_addPath'>addPath</a><sup><a href='#SkPath_addPath_2'>[2]</a></sup><sup><a href='#SkPath_addPath_3'>[3]</a></sup> <a href='#SkPath_offset'>offset</a><sup><a href='#SkPath_offset_2'>[2]</a></sup> <a href='SkCanvas_Reference#SkCanvas_concat'>SkCanvas::concat()</a> <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>
|
|
|
|
---
|
|
|
|
## <a name='Last_Point'>Last Point</a>
|
|
|
|
<a href='#Path'>Path</a> is defined cumulatively, often by adding a segment to the end of last
|
|
<a href='#Contour'>Contour</a>. <a href='#Last_Point'>Last Point</a> of <a href='#Contour'>Contour</a> is shared as first <a href='SkPoint_Reference#Point'>Point</a> of added <a href='undocumented#Line'>Line</a> or <a href='undocumented#Curve'>Curve</a>.
|
|
<a href='#Last_Point'>Last Point</a> can be read and written directly with <a href='#SkPath_getLastPt'>getLastPt</a> and <a href='#SkPath_setLastPt'>setLastPt</a>.
|
|
|
|
<a name='SkPath_getLastPt'></a>
|
|
## getLastPt
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_getLastPt'>getLastPt</a>(<a href='SkPoint_Reference#SkPoint'>SkPoint</a>* lastPt) const
|
|
</pre>
|
|
|
|
Returns <a href='#Last_Point'>Last Point</a> on <a href='#Path'>Path</a> in <a href='#SkPath_getLastPt_lastPt'>lastPt</a>. Returns false if <a href='#Point_Array'>Point Array</a> is empty,
|
|
storing (0, 0) if <a href='#SkPath_getLastPt_lastPt'>lastPt</a> is not nullptr.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_getLastPt_lastPt'><code><strong>lastPt</strong></code></a></td>
|
|
<td>storage for final <a href='SkPoint_Reference#Point'>Point</a> in <a href='#Point_Array'>Point Array</a>; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Point_Array'>Point Array</a> contains one or more <a href='SkPoint_Reference#Point'>Points</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="df8160dd7ac8aa4b40fce7286fe49952">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
last point: 35.2786, 52.9772
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_setLastPt'>setLastPt</a><sup><a href='#SkPath_setLastPt_2'>[2]</a></sup>
|
|
|
|
---
|
|
|
|
<a name='SkPath_setLastPt'></a>
|
|
## setLastPt
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_setLastPt'>setLastPt</a>(<a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y)
|
|
</pre>
|
|
|
|
Sets <a href='#Last_Point'>Last Point</a> to (<a href='#SkPath_setLastPt_x'>x</a>, <a href='#SkPath_setLastPt_y'>y</a>). If <a href='#Point_Array'>Point Array</a> is empty, append <a href='#SkPath_kMove_Verb'>kMove Verb</a> to
|
|
<a href='#Verb_Array'>Verb Array</a> and append (<a href='#SkPath_setLastPt_x'>x</a>, <a href='#SkPath_setLastPt_y'>y</a>) to <a href='#Point_Array'>Point Array</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_setLastPt_x'><code><strong>x</strong></code></a></td>
|
|
<td>set <a href='#SkPath_setLastPt_x'>x</a>-axis value of <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_setLastPt_y'><code><strong>y</strong></code></a></td>
|
|
<td>set <a href='#SkPath_setLastPt_y'>y</a>-axis value of <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="542c5afaea5f57baa11d0561dd402e18"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_getLastPt'>getLastPt</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_setLastPt_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_setLastPt'>setLastPt</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a>& p)
|
|
</pre>
|
|
|
|
Sets the last point on the path. If <a href='#Point_Array'>Point Array</a> is empty, append <a href='#SkPath_kMove_Verb'>kMove Verb</a> to
|
|
<a href='#Verb_Array'>Verb Array</a> and append <a href='#SkPath_setLastPt_2_p'>p</a> to <a href='#Point_Array'>Point Array</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_setLastPt_2_p'><code><strong>p</strong></code></a></td>
|
|
<td>set value of <a href='#Last_Point'>Last Point</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="6fa5e8f9513b3225e106778592e27e94"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_getLastPt'>getLastPt</a>
|
|
|
|
---
|
|
|
|
## <a name='SkPath_SegmentMask'>Enum SkPath::SegmentMask</a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
enum <a href='#SkPath_SegmentMask'>SegmentMask</a> {
|
|
<a href='#SkPath_kLine_SegmentMask'>kLine SegmentMask</a> = 1 << 0,
|
|
<a href='#SkPath_kQuad_SegmentMask'>kQuad SegmentMask</a> = 1 << 1,
|
|
<a href='#SkPath_kConic_SegmentMask'>kConic SegmentMask</a> = 1 << 2,
|
|
<a href='#SkPath_kCubic_SegmentMask'>kCubic SegmentMask</a> = 1 << 3,
|
|
};
|
|
</pre>
|
|
|
|
<a href='#SkPath_SegmentMask'>SegmentMask</a> constants correspond to each drawing <a href='#SkPath_Verb'>Verb</a> type in <a href='#Path'>Path</a>; for
|
|
instance, if <a href='#Path'>Path</a> only contains <a href='undocumented#Line'>Lines</a>, only the <a href='#SkPath_kLine_SegmentMask'>kLine SegmentMask</a> bit is set.
|
|
|
|
### Constants
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Const</th>
|
|
<th style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>Value</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kLine_SegmentMask'><code>SkPath::kLine_SegmentMask</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>1</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Set if <a href='#Verb_Array'>Verb Array</a> contains <a href='#SkPath_kLine_Verb'>kLine Verb</a>.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kQuad_SegmentMask'><code>SkPath::kQuad_SegmentMask</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>2</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Set if <a href='#Verb_Array'>Verb Array</a> contains <a href='#SkPath_kQuad_Verb'>kQuad Verb</a>. Note that <a href='#SkPath_conicTo'>conicTo</a> may add a <a href='#Quad'>Quad</a>.
|
|
</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kConic_SegmentMask'><code>SkPath::kConic_SegmentMask</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>4</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Set if <a href='#Verb_Array'>Verb Array</a> contains <a href='#SkPath_kConic_Verb'>kConic Verb</a>.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkPath_kCubic_SegmentMask'><code>SkPath::kCubic_SegmentMask</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>8</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Set if <a href='#Verb_Array'>Verb Array</a> contains <a href='#SkPath_kCubic_Verb'>kCubic Verb</a>.
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="a61e5758574e28190ec4ed8c4ae7e7fa"><div>When <a href='#SkPath_conicTo'>conicTo</a> has a weight of one, <a href='#Quad'>Quad</a> is added to <a href='#Path'>Path</a>.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
Path kConic_SegmentMask is clear
|
|
Path kQuad_SegmentMask is set
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_getSegmentMasks'>getSegmentMasks</a> <a href='#SkPath_Verb'>Verb</a>
|
|
|
|
<a name='SkPath_getSegmentMasks'></a>
|
|
## getSegmentMasks
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
uint32_t <a href='#SkPath_getSegmentMasks'>getSegmentMasks</a>() const
|
|
</pre>
|
|
|
|
Returns a mask, where each set bit corresponds to a <a href='#SkPath_SegmentMask'>SegmentMask</a> constant
|
|
if <a href='#Path'>Path</a> contains one or more <a href='#Verb'>Verbs</a> of that type.
|
|
Returns zero if <a href='#Path'>Path</a> contains no <a href='undocumented#Line'>Lines</a>, or <a href='undocumented#Curve'>Curves</a>: <a href='#Quad'>Quads</a>, <a href='#Conic'>Conics</a>, or <a href='#Cubic'>Cubics</a>.
|
|
|
|
<a href='#SkPath_getSegmentMasks'>getSegmentMasks</a> returns a cached result; it is very fast.
|
|
|
|
### Return Value
|
|
|
|
<a href='#SkPath_SegmentMask'>SegmentMask</a> bits or zero
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="657a3f3e11acafea92b84d6bb0c13633">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
mask quad set
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_getSegmentMasks'>getSegmentMasks</a> <a href='#SkPath_Verb'>Verb</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_contains'></a>
|
|
## contains
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_contains'>contains</a>(<a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y) const
|
|
</pre>
|
|
|
|
Returns true if the point (<a href='#SkPath_contains_x'>x</a>, <a href='#SkPath_contains_y'>y</a>) is contained by <a href='#Path'>Path</a>, taking into
|
|
account <a href='#SkPath_FillType'>FillType</a>.
|
|
|
|
| <a href='#SkPath_FillType'>FillType</a> | <a href='#SkPath_contains'>contains</a> returns true if <a href='SkPoint_Reference#Point'>Point</a> is enclosed by |
|
|
| --- | --- |
|
|
| <a href='#SkPath_kWinding_FillType'>kWinding FillType</a> | a non-zero sum of <a href='#Contour'>Contour</a> <a href='#Direction'>Directions</a>. |
|
|
| <a href='#SkPath_kEvenOdd_FillType'>kEvenOdd FillType</a> | an odd number of <a href='#Contour'>Contours</a>. |
|
|
| <a href='#SkPath_kInverseWinding_FillType'>kInverseWinding FillType</a> | a zero sum of <a href='#Contour'>Contour</a> <a href='#Direction'>Directions</a>. |
|
|
| <a href='#SkPath_kInverseEvenOdd_FillType'>kInverseEvenOdd FillType</a> | and even number of <a href='#Contour'>Contours</a>. |
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_contains_x'><code><strong>x</strong></code></a></td>
|
|
<td><a href='#SkPath_contains_x'>x</a>-axis value of containment test</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_contains_y'><code><strong>y</strong></code></a></td>
|
|
<td><a href='#SkPath_contains_y'>y</a>-axis value of containment test</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='SkPoint_Reference#Point'>Point</a> is in <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="c0216b3f7ebd80b9589ae5728f08fc80"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_conservativelyContainsRect'>conservativelyContainsRect</a> <a href='#Fill_Type'>Fill Type</a> <a href='undocumented#Op'>Op</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_dump'></a>
|
|
## dump
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_dump'>dump</a>(<a href='SkWStream_Reference#SkWStream'>SkWStream</a>* stream, bool forceClose, bool dumpAsHex) const
|
|
</pre>
|
|
|
|
Writes text representation of <a href='#Path'>Path</a> to <a href='#SkPath_dump_stream'>stream</a>. If <a href='#SkPath_dump_stream'>stream</a> is nullptr, writes to
|
|
standard output. Set <a href='#SkPath_dump_forceClose'>forceClose</a> to true to get edges used to fill <a href='#Path'>Path</a>.
|
|
Set <a href='#SkPath_dump_dumpAsHex'>dumpAsHex</a> true to generate exact binary representations
|
|
of floating point numbers used in <a href='#Point_Array'>Point Array</a> and <a href='#Conic_Weight'>Conic Weights</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_dump_stream'><code><strong>stream</strong></code></a></td>
|
|
<td>writable <a href='SkWStream_Reference#WStream'>WStream</a> receiving <a href='#Path'>Path</a> text representation; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_dump_forceClose'><code><strong>forceClose</strong></code></a></td>
|
|
<td>true if missing <a href='#SkPath_kClose_Verb'>kClose Verb</a> is output</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_dump_dumpAsHex'><code><strong>dumpAsHex</strong></code></a></td>
|
|
<td>true if <a href='undocumented#SkScalar'>SkScalar</a> values are written as hexadecimal</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="8036d764452a62f9953af50846f0f3c0">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
path.setFillType(SkPath::kWinding_FillType);
|
|
path.moveTo(0, 0);
|
|
path.quadTo(20, 30, 40, 50);
|
|
path.setFillType(SkPath::kWinding_FillType);
|
|
path.moveTo(SkBits2Float(0x00000000), SkBits2Float(0x00000000)); // 0, 0
|
|
path.quadTo(SkBits2Float(0x41a00000), SkBits2Float(0x41f00000), SkBits2Float(0x42200000), SkBits2Float(0x42480000)); // 20, 30, 40, 50
|
|
path.setFillType(SkPath::kWinding_FillType);
|
|
path.moveTo(0, 0);
|
|
path.quadTo(20, 30, 40, 50);
|
|
path.lineTo(0, 0);
|
|
path.close();
|
|
path.setFillType(SkPath::kWinding_FillType);
|
|
path.moveTo(SkBits2Float(0x00000000), SkBits2Float(0x00000000)); // 0, 0
|
|
path.quadTo(SkBits2Float(0x41a00000), SkBits2Float(0x41f00000), SkBits2Float(0x42200000), SkBits2Float(0x42480000)); // 20, 30, 40, 50
|
|
path.lineTo(SkBits2Float(0x00000000), SkBits2Float(0x00000000)); // 0, 0
|
|
path.close();
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_dumpHex'>dumpHex</a> <a href='SkRect_Reference#SkRect_dump'>SkRect::dump()</a><sup><a href='SkRect_Reference#SkRect_dump_2'>[2]</a></sup> <a href='SkRRect_Reference#SkRRect_dump'>SkRRect::dump()</a><sup><a href='SkRRect_Reference#SkRRect_dump_2'>[2]</a></sup> <a href='undocumented#SkPathMeasure_dump'>SkPathMeasure::dump()</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_dump_2'></a>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_dump'>dump</a>() const
|
|
</pre>
|
|
|
|
Writes text representation of <a href='#Path'>Path</a> to standard output. The representation may be
|
|
directly compiled as C++ code. Floating point values are written
|
|
with limited precision; it may not be possible to reconstruct original <a href='#Path'>Path</a>
|
|
from output.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="92e0032f85181795d1f8b5a2c8e4e4b7">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
path.setFillType(SkPath::kWinding_FillType);
|
|
path.moveTo(0, 0);
|
|
path.lineTo(0.857143f, 0.666667f);
|
|
path is not equal to copy
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_dumpHex'>dumpHex</a> <a href='SkRect_Reference#SkRect_dump'>SkRect::dump()</a><sup><a href='SkRect_Reference#SkRect_dump_2'>[2]</a></sup> <a href='SkRRect_Reference#SkRRect_dump'>SkRRect::dump()</a><sup><a href='SkRRect_Reference#SkRRect_dump_2'>[2]</a></sup> <a href='undocumented#SkPathMeasure_dump'>SkPathMeasure::dump()</a> <a href='#SkPath_writeToMemory'>writeToMemory</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_dumpHex'></a>
|
|
## dumpHex
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_dumpHex'>dumpHex</a>() const
|
|
</pre>
|
|
|
|
Writes text representation of <a href='#Path'>Path</a> to standard output. The representation may be
|
|
directly compiled as C++ code. Floating point values are written
|
|
in hexadecimal to preserve their exact bit pattern. The output reconstructs the
|
|
original <a href='#Path'>Path</a>.
|
|
|
|
Use instead of <a href='#SkPath_dump_2'>dump</a> when submitting <a href='https://bug.skia.org'>bug reports against Skia</a></a> .
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="72a92fe058e8b3be6c8a30fad7fd1266">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
path.setFillType(SkPath::kWinding_FillType);
|
|
path.moveTo(SkBits2Float(0x00000000), SkBits2Float(0x00000000)); // 0, 0
|
|
path.lineTo(SkBits2Float(0x3f5b6db7), SkBits2Float(0x3f2aaaab)); // 0.857143f, 0.666667f
|
|
path is equal to copy
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_dump'>dump</a><sup><a href='#SkPath_dump_2'>[2]</a></sup> <a href='SkRect_Reference#SkRect_dumpHex'>SkRect::dumpHex</a> <a href='SkRRect_Reference#SkRRect_dumpHex'>SkRRect::dumpHex</a> <a href='#SkPath_writeToMemory'>writeToMemory</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_writeToMemory'></a>
|
|
## writeToMemory
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
size_t <a href='#SkPath_writeToMemory'>writeToMemory</a>(void* buffer) const
|
|
</pre>
|
|
|
|
Writes <a href='#Path'>Path</a> to <a href='#SkPath_writeToMemory_buffer'>buffer</a>, returning the number of bytes written.
|
|
Pass nullptr to obtain the storage size.
|
|
|
|
Writes <a href='#Fill_Type'>Fill Type</a>, <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, <a href='#Conic_Weight'>Conic Weight</a>, and
|
|
additionally writes computed information like <a href='#SkPath_Convexity'>Convexity</a> and bounds.
|
|
|
|
Use only be used in concert with <a href='#SkPath_readFromMemory'>readFromMemory</a>;
|
|
the format used for <a href='#Path'>Path</a> in memory is not guaranteed.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_writeToMemory_buffer'><code><strong>buffer</strong></code></a></td>
|
|
<td>storage for <a href='#Path'>Path</a>; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
size of storage required for <a href='#Path'>Path</a>; always a multiple of 4
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="e5f16eda6a1c2d759556285f72598445">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
path is equal to copy
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_serialize'>serialize</a> <a href='#SkPath_readFromMemory'>readFromMemory</a> <a href='#SkPath_dump'>dump</a><sup><a href='#SkPath_dump_2'>[2]</a></sup> <a href='#SkPath_dumpHex'>dumpHex</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_serialize'></a>
|
|
## serialize
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='undocumented#sk_sp'>sk sp</a><<a href='undocumented#SkData'>SkData</a>> <a href='#SkPath_serialize'>serialize</a>() const
|
|
</pre>
|
|
|
|
Writes <a href='#Path'>Path</a> to buffer, returning the buffer written to, wrapped in <a href='undocumented#Data'>Data</a>.
|
|
|
|
<a href='#SkPath_serialize'>serialize</a> writes <a href='#Fill_Type'>Fill Type</a>, <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, <a href='#Conic_Weight'>Conic Weight</a>, and
|
|
additionally writes computed information like <a href='#SkPath_Convexity'>Convexity</a> and bounds.
|
|
|
|
<a href='#SkPath_serialize'>serialize</a> should only be used in concert with <a href='#SkPath_readFromMemory'>readFromMemory</a>.
|
|
The format used for <a href='#Path'>Path</a> in memory is not guaranteed.
|
|
|
|
### Return Value
|
|
|
|
<a href='#Path'>Path</a> data wrapped in <a href='undocumented#Data'>Data</a> buffer
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="2c6aff73608cd198659db6d1eeaaae4f">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
path is equal to copy
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_writeToMemory'>writeToMemory</a> <a href='#SkPath_readFromMemory'>readFromMemory</a> <a href='#SkPath_dump'>dump</a><sup><a href='#SkPath_dump_2'>[2]</a></sup> <a href='#SkPath_dumpHex'>dumpHex</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_readFromMemory'></a>
|
|
## readFromMemory
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
size_t <a href='#SkPath_readFromMemory'>readFromMemory</a>(const void* buffer, size_t length)
|
|
</pre>
|
|
|
|
Initializes <a href='#Path'>Path</a> from <a href='#SkPath_readFromMemory_buffer'>buffer</a> of size <a href='#SkPath_readFromMemory_length'>length</a>. Returns zero if the <a href='#SkPath_readFromMemory_buffer'>buffer</a> is
|
|
data is inconsistent, or the <a href='#SkPath_readFromMemory_length'>length</a> is too small.
|
|
|
|
Reads <a href='#Fill_Type'>Fill Type</a>, <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, <a href='#Conic_Weight'>Conic Weight</a>, and
|
|
additionally reads computed information like <a href='#SkPath_Convexity'>Convexity</a> and bounds.
|
|
|
|
Used only in concert with <a href='#SkPath_writeToMemory'>writeToMemory</a>;
|
|
the format used for <a href='#Path'>Path</a> in memory is not guaranteed.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_readFromMemory_buffer'><code><strong>buffer</strong></code></a></td>
|
|
<td>storage for <a href='#Path'>Path</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_readFromMemory_length'><code><strong>length</strong></code></a></td>
|
|
<td><a href='#SkPath_readFromMemory_buffer'>buffer</a> size in bytes; must be multiple of 4</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
number of bytes read, or zero on failure
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="9c6edd836c573a0fd232d2b8aa11a678">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
length = 32; returned by readFromMemory = 0
|
|
length = 40; returned by readFromMemory = 36
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_writeToMemory'>writeToMemory</a>
|
|
|
|
---
|
|
|
|
## <a name='Generation_ID'>Generation ID</a>
|
|
|
|
<a href='#Generation_ID'>Generation ID</a> provides a quick way to check if <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, or
|
|
<a href='#Conic_Weight'>Conic Weight</a> has changed. <a href='#Generation_ID'>Generation ID</a> is not a hash; identical <a href='#Path'>Paths</a> will
|
|
not necessarily have matching <a href='#Generation_ID'>Generation IDs</a>.
|
|
|
|
Empty <a href='#Path'>Paths</a> have a <a href='#Generation_ID'>Generation ID</a> of one.
|
|
|
|
<a name='SkPath_getGenerationID'></a>
|
|
## getGenerationID
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
uint32_t <a href='#SkPath_getGenerationID'>getGenerationID</a>() const
|
|
</pre>
|
|
|
|
Returns a non-zero, globally unique value. A different value is returned
|
|
if <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, or <a href='#Conic_Weight'>Conic Weight</a> changes.
|
|
|
|
Setting <a href='#Fill_Type'>Fill Type</a> does not change <a href='#Generation_ID'>Generation ID</a>.
|
|
|
|
Each time the path is modified, a different <a href='#Generation_ID'>Generation ID</a> will be returned.
|
|
|
|
<a href='#Fill_Type'>Fill Type</a> does affect <a href='#Generation_ID'>Generation ID</a> on Android framework.
|
|
|
|
### Return Value
|
|
|
|
non-zero, globally unique value
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="a0f166715d6479f91258d854e63e586d">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
empty genID = 1
|
|
1st lineTo genID = 2
|
|
empty genID = 1
|
|
2nd lineTo genID = 3
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_equal_operator'>operator==(const SkPath& a, const SkPath& b)</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_isValid'></a>
|
|
## isValid
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_isValid'>isValid</a>() const
|
|
</pre>
|
|
|
|
Returns if <a href='#Path'>Path</a> data is consistent. Corrupt <a href='#Path'>Path</a> data is detected if
|
|
internal values are out of range or internal storage does not match
|
|
array dimensions.
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Path'>Path</a> data is consistent
|
|
|
|
---
|
|
|
|
<a name='SkPath_pathRefIsValid'></a>
|
|
## pathRefIsValid
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_pathRefIsValid'>pathRefIsValid</a>() const
|
|
</pre>
|
|
|
|
To be deprecated soon.
|
|
|
|
---
|
|
|
|
<a name='SkPath_debugging_private_getFreeSpace'></a>
|
|
## debugging_private_getFreeSpace
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
size_t <a href='#SkPath_debugging_private_getFreeSpace'>debugging private getFreeSpace</a>() const
|
|
</pre>
|
|
|
|
Experimental.
|
|
|
|
---
|
|
|
|
# <a name='SkPath_Iter'>Class SkPath::Iter</a>
|
|
|
|
## <a name='Constructor'>Constructor</a>
|
|
|
|
|
|
SkPath::Iter can be constructed or initialized by these functions, including C++ class constructors.
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_Iter_const_SkPath'>Iter(const SkPath& path, bool forceClose)</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>constructs <a href='#Path'>Path</a> iterator</td>
|
|
</tr>
|
|
</table>
|
|
|
|
## <a name='Member_Function'>Member_Function</a>
|
|
|
|
|
|
SkPath::Iter member functions read and modify the structure properties.
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_Iter_Iter'>Iter()</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>constructs <a href='#Path'>Path</a> iterator</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_Iter_conicWeight'>conicWeight</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns <a href='#Conic_Weight'>Conic Weight</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_Iter_isCloseLine'>isCloseLine</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='undocumented#Line'>Line</a> was generated by <a href='#SkPath_kClose_Verb'>kClose Verb</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_Iter_isClosedContour'>isClosedContour</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns if <a href='#Contour'>Contour</a> has <a href='#SkPath_kClose_Verb'>kClose Verb</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_Iter_next'>next</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns next <a href='#SkPath_Verb'>Verb</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_Iter_setPath'>setPath</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>resets <a href='#SkPath_Iter_Iter'>Iter</a> to <a href='#Path'>Path</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
class <a href='#SkPath_Iter_Iter'>Iter</a> {
|
|
public:
|
|
<a href='#SkPath_Iter_Iter'>Iter()</a>;
|
|
<a href='#SkPath_Iter_const_SkPath'>Iter(const SkPath& path, bool forceClose)</a>;
|
|
void <a href='#SkPath_Iter_setPath'>setPath(const SkPath& path, bool forceClose)</a>;
|
|
<a href='#SkPath_Verb'>Verb</a> <a href='#SkPath_Iter_next'>next(SkPoint pts[4], bool doConsumeDegenerates = true, bool exact = false)</a>;
|
|
<a href='undocumented#SkScalar'>SkScalar</a> <a href='#SkPath_Iter_conicWeight'>conicWeight</a> const;
|
|
bool <a href='#SkPath_Iter_isCloseLine'>isCloseLine</a> const;
|
|
bool <a href='#SkPath_Iter_isClosedContour'>isClosedContour</a> const;
|
|
};
|
|
</pre>
|
|
|
|
Iterates through <a href='#Verb_Array'>Verb Array</a>, and associated <a href='#Point_Array'>Point Array</a> and <a href='#Conic_Weight'>Conic Weight</a>.
|
|
Provides options to treat open <a href='#Contour'>Contours</a> as closed, and to ignore
|
|
degenerate data.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="2f53df9201769ab7e7c0e164a1334309"><div>Ignoring the actual <a href='#Verb'>Verbs</a> and replacing them with <a href='#Quad'>Quads</a> rounds the
|
|
path of the glyph.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_RawIter'>RawIter</a>
|
|
|
|
<a name='SkPath_Iter_Iter'></a>
|
|
## Iter
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath_Iter_Iter'>Iter</a>()
|
|
</pre>
|
|
|
|
Initializes <a href='#SkPath_Iter_Iter'>Iter</a> with an empty <a href='#Path'>Path</a>. <a href='#SkPath_Iter_next'>next</a> on <a href='#SkPath_Iter_Iter'>Iter</a> returns <a href='#SkPath_kDone_Verb'>kDone Verb</a>.
|
|
Call <a href='#SkPath_Iter_setPath'>setPath</a> to initialize <a href='#SkPath_Iter_Iter'>Iter</a> at a later time.
|
|
|
|
### Return Value
|
|
|
|
<a href='#SkPath_Iter_Iter'>Iter</a> of empty <a href='#Path'>Path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="01648775cb9b354b2f1836dad82a25ab">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
iter is done
|
|
iter is done
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_Iter_setPath'>setPath</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_Iter_const_SkPath'></a>
|
|
## Iter
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath_Iter_Iter'>Iter</a>(const <a href='#SkPath'>SkPath</a>& path, bool forceClose)
|
|
</pre>
|
|
|
|
Sets <a href='#SkPath_Iter_Iter'>Iter</a> to return elements of <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Conic Weight</a> in <a href='#SkPath_Iter_const_SkPath_path'>path</a>.
|
|
If <a href='#SkPath_Iter_const_SkPath_forceClose'>forceClose</a> is true, <a href='#SkPath_Iter_Iter'>Iter</a> will add <a href='#SkPath_kLine_Verb'>kLine Verb</a> and <a href='#SkPath_kClose_Verb'>kClose Verb</a> after each
|
|
open <a href='#Contour'>Contour</a>. <a href='#SkPath_Iter_const_SkPath_path'>path</a> is not altered.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_Iter_const_SkPath_path'><code><strong>path</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> to iterate</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_Iter_const_SkPath_forceClose'><code><strong>forceClose</strong></code></a></td>
|
|
<td>true if open <a href='#Contour'>Contours</a> generate <a href='#SkPath_kClose_Verb'>kClose Verb</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
<a href='#SkPath_Iter_Iter'>Iter</a> of <a href='#SkPath_Iter_const_SkPath_path'>path</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="13044dbf68885c0f15322c0633b633a3">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
open:
|
|
kMove_Verb {0, 0},
|
|
kQuad_Verb {0, 0}, {10, 20}, {30, 40},
|
|
kDone_Verb
|
|
closed:
|
|
kMove_Verb {0, 0},
|
|
kQuad_Verb {0, 0}, {10, 20}, {30, 40},
|
|
kLine_Verb {30, 40}, {0, 0},
|
|
kClose_Verb {0, 0},
|
|
kDone_Verb
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_Iter_setPath'>setPath</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_Iter_setPath'></a>
|
|
## setPath
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_Iter_setPath'>setPath</a>(const <a href='#SkPath'>SkPath</a>& path, bool forceClose)
|
|
</pre>
|
|
|
|
Sets <a href='#SkPath_Iter_Iter'>Iter</a> to return elements of <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Conic Weight</a> in <a href='#SkPath_Iter_setPath_path'>path</a>.
|
|
If <a href='#SkPath_Iter_setPath_forceClose'>forceClose</a> is true, <a href='#SkPath_Iter_Iter'>Iter</a> will add <a href='#SkPath_kLine_Verb'>kLine Verb</a> and <a href='#SkPath_kClose_Verb'>kClose Verb</a> after each
|
|
open <a href='#Contour'>Contour</a>. <a href='#SkPath_Iter_setPath_path'>path</a> is not altered.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_Iter_setPath_path'><code><strong>path</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> to iterate</td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_Iter_setPath_forceClose'><code><strong>forceClose</strong></code></a></td>
|
|
<td>true if open <a href='#Contour'>Contours</a> generate <a href='#SkPath_kClose_Verb'>kClose Verb</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="6c9688008cea8937ad5cc188b38ecf16">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
quad open:
|
|
kMove_Verb {0, 0},
|
|
kQuad_Verb {0, 0}, {10, 20}, {30, 40},
|
|
kDone_Verb
|
|
conic closed:
|
|
kMove_Verb {0, 0},
|
|
kConic_Verb {0, 0}, {1, 2}, {3, 4}, weight = 0.5
|
|
kLine_Verb {3, 4}, {0, 0},
|
|
kClose_Verb {0, 0},
|
|
kDone_Verb
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_Iter_const_SkPath'>Iter(const SkPath& path, bool forceClose)</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_Iter_next'></a>
|
|
## next
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath_Verb'>Verb</a> <a href='#SkPath_Iter_next'>next</a>(<a href='SkPoint_Reference#SkPoint'>SkPoint</a> pts[4], bool doConsumeDegenerates = true, bool exact = false)
|
|
</pre>
|
|
|
|
Returns next <a href='#SkPath_Verb'>Verb</a> in <a href='#Verb_Array'>Verb Array</a>, and advances <a href='#SkPath_Iter_Iter'>Iter</a>.
|
|
When <a href='#Verb_Array'>Verb Array</a> is exhausted, returns <a href='#SkPath_kDone_Verb'>kDone Verb</a>.
|
|
|
|
Zero to four <a href='SkPoint_Reference#Point'>Points</a> are stored in <a href='#SkPath_Iter_next_pts'>pts</a>, depending on the returned <a href='#SkPath_Verb'>Verb</a>.
|
|
|
|
If <a href='#SkPath_Iter_next_doConsumeDegenerates'>doConsumeDegenerates</a> is true, skip consecutive <a href='#SkPath_kMove_Verb'>kMove Verb</a> entries, returning
|
|
only the last in the series; and skip very small <a href='undocumented#Line'>Lines</a>, <a href='#Quad'>Quads</a>, and <a href='#Conic'>Conics</a>; and
|
|
skip <a href='#SkPath_kClose_Verb'>kClose Verb</a> following <a href='#SkPath_kMove_Verb'>kMove Verb</a>.
|
|
if <a href='#SkPath_Iter_next_doConsumeDegenerates'>doConsumeDegenerates</a> is true and <a href='#SkPath_Iter_next_exact'>exact</a> is true, only skip <a href='undocumented#Line'>Lines</a>, <a href='#Quad'>Quads</a>, and
|
|
<a href='#Conic'>Conics</a> with zero lengths.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_Iter_next_pts'><code><strong>pts</strong></code></a></td>
|
|
<td>storage for <a href='SkPoint_Reference#Point'>Point</a> data describing returned <a href='#SkPath_Verb'>Verb</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_Iter_next_doConsumeDegenerates'><code><strong>doConsumeDegenerates</strong></code></a></td>
|
|
<td>if true, skip degenerate <a href='#Verb'>Verbs</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkPath_Iter_next_exact'><code><strong>exact</strong></code></a></td>
|
|
<td>skip zero length curves</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
next <a href='#SkPath_Verb'>Verb</a> from <a href='#Verb_Array'>Verb Array</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="00ae8984856486bdb626d0ed6587855a"><div>skip degenerate skips the first in a <a href='#SkPath_kMove_Verb'>kMove Verb</a> pair, the <a href='#SkPath_kMove_Verb'>kMove Verb</a>
|
|
followed by the <a href='#SkPath_kClose_Verb'>kClose Verb</a>, the zero length <a href='undocumented#Line'>Line</a> and the very small <a href='undocumented#Line'>Line</a>.
|
|
|
|
skip degenerate if <a href='#SkPath_Iter_next_exact'>exact</a> skips the same as skip degenerate, but shows
|
|
the very small <a href='undocumented#Line'>Line</a>.
|
|
|
|
skip none shows all of the <a href='#Verb'>Verbs</a> and <a href='SkPoint_Reference#Point'>Points</a> in <a href='#Path'>Path</a>.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
skip degenerate:
|
|
kMove_Verb {20, 20},
|
|
kQuad_Verb {20, 20}, {10, 20}, {30, 40},
|
|
kDone_Verb
|
|
skip degenerate if exact:
|
|
kMove_Verb {20, 20},
|
|
kQuad_Verb {20, 20}, {10, 20}, {30, 40},
|
|
kMove_Verb {30, 30},
|
|
kLine_Verb {30, 30}, {30.00001, 30},
|
|
kDone_Verb
|
|
skip none:
|
|
kMove_Verb {10, 10},
|
|
kMove_Verb {20, 20},
|
|
kQuad_Verb {20, 20}, {10, 20}, {30, 40},
|
|
kMove_Verb {1, 1},
|
|
kClose_Verb {1, 1},
|
|
kMove_Verb {30, 30},
|
|
kLine_Verb {30, 30}, {30, 30},
|
|
kMove_Verb {30, 30},
|
|
kLine_Verb {30, 30}, {30.00001, 30},
|
|
kDone_Verb
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_Verb'>Verb</a> <a href='#SkPath_IsLineDegenerate'>IsLineDegenerate</a> <a href='#SkPath_IsCubicDegenerate'>IsCubicDegenerate</a> <a href='#SkPath_IsQuadDegenerate'>IsQuadDegenerate</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_Iter_conicWeight'></a>
|
|
## conicWeight
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='undocumented#SkScalar'>SkScalar</a> <a href='#SkPath_Iter_conicWeight'>conicWeight</a>() const
|
|
</pre>
|
|
|
|
Returns <a href='#Conic_Weight'>Conic Weight</a> if <a href='#SkPath_Iter_next'>next</a> returned <a href='#SkPath_kConic_Verb'>kConic Verb</a>.
|
|
|
|
If <a href='#SkPath_Iter_next'>next</a> has not been called, or <a href='#SkPath_Iter_next'>next</a> did not return <a href='#SkPath_kConic_Verb'>kConic Verb</a>,
|
|
result is undefined.
|
|
|
|
### Return Value
|
|
|
|
<a href='#Conic_Weight'>Conic Weight</a> for <a href='#Conic'>Conic</a> <a href='SkPoint_Reference#Point'>Points</a> returned by <a href='#SkPath_Iter_next'>next</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="7cdea37741d50f0594c6244eb07fd175">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
first verb is move
|
|
next verb is conic
|
|
conic points: {0,0}, {1,2}, {3,4}
|
|
conic weight: 0.5
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Conic_Weight'>Conic Weight</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_Iter_isCloseLine'></a>
|
|
## isCloseLine
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_Iter_isCloseLine'>isCloseLine</a>() const
|
|
</pre>
|
|
|
|
Returns true if last <a href='#SkPath_kLine_Verb'>kLine Verb</a> returned by <a href='#SkPath_Iter_next'>next</a> was generated
|
|
by <a href='#SkPath_kClose_Verb'>kClose Verb</a>. When true, the end point returned by <a href='#SkPath_Iter_next'>next</a> is
|
|
also the start point of <a href='#Contour'>Contour</a>.
|
|
|
|
If <a href='#SkPath_Iter_next'>next</a> has not been called, or <a href='#SkPath_Iter_next'>next</a> did not return <a href='#SkPath_kLine_Verb'>kLine Verb</a>,
|
|
result is undefined.
|
|
|
|
### Return Value
|
|
|
|
true if last <a href='#SkPath_kLine_Verb'>kLine Verb</a> was generated by <a href='#SkPath_kClose_Verb'>kClose Verb</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="7000b501f49341629bfdd9f80e686103">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
1st verb is move
|
|
moveTo point: {6,7}
|
|
2nd verb is conic
|
|
3rd verb is line
|
|
line points: {3,4}, {6,7}
|
|
line generated by close
|
|
4th verb is close
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_close'>close</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_Iter_isClosedContour'></a>
|
|
## isClosedContour
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkPath_Iter_isClosedContour'>isClosedContour</a>() const
|
|
</pre>
|
|
|
|
Returns true if subsequent calls to <a href='#SkPath_Iter_next'>next</a> return <a href='#SkPath_kClose_Verb'>kClose Verb</a> before returning
|
|
<a href='#SkPath_kMove_Verb'>kMove Verb</a>. if true, <a href='#Contour'>Contour</a> <a href='#SkPath_Iter_Iter'>Iter</a> is processing may end with <a href='#SkPath_kClose_Verb'>kClose Verb</a>, or
|
|
<a href='#SkPath_Iter_Iter'>Iter</a> may have been initialized with force close set to true.
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#Contour'>Contour</a> is closed
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="b0d48a6e949db1cb545216ae9c3c3c70">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
without close(), forceClose is false: isClosedContour returns false
|
|
with close(), forceClose is false: isClosedContour returns true
|
|
without close(), forceClose is true : isClosedContour returns true
|
|
with close(), forceClose is true : isClosedContour returns true
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_Iter_const_SkPath'>Iter(const SkPath& path, bool forceClose)</a>
|
|
|
|
---
|
|
|
|
# <a name='SkPath_RawIter'>Class SkPath::RawIter</a>
|
|
|
|
## <a name='Constructor'>Constructor</a>
|
|
|
|
|
|
SkPath::RawIter can be constructed or initialized by these functions, including C++ class constructors.
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_RawIter_copy_const_SkPath'>RawIter(const SkPath& path)</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>constructs with <a href='#Path'>Path</a> to iterate over</td>
|
|
</tr>
|
|
</table>
|
|
|
|
## <a name='Member_Function'>Member_Function</a>
|
|
|
|
|
|
SkPath::RawIter member functions read and modify the structure properties.
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Topic</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_RawIter_RawIter'>RawIter()</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>constructs empty <a href='#Path'>Path</a> iterator</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_RawIter_conicWeight'>conicWeight</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns <a href='#Conic_Weight'>Conic Weight</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_RawIter_next'>next</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns next <a href='#SkPath_Verb'>Verb</a> and associated <a href='SkPoint_Reference#Point'>Points</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_RawIter_peek'>peek</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>returns next <a href='#SkPath_Verb'>Verb</a></td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a href='#SkPath_RawIter_setPath'>setPath</a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>sets <a href='#Path'>Path</a> to iterate over</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
class <a href='#SkPath_RawIter_RawIter'>RawIter</a> {
|
|
public:
|
|
<a href='#SkPath_RawIter_RawIter'>RawIter()</a>;
|
|
<a href='#SkPath_RawIter_copy_const_SkPath'>RawIter(const SkPath& path)</a>;
|
|
void <a href='#SkPath_RawIter_setPath'>setPath(const SkPath& path)</a>;
|
|
<a href='#SkPath_Verb'>Verb</a> <a href='#SkPath_RawIter_next'>next(SkPoint pts[4])</a>;
|
|
<a href='#SkPath_Verb'>Verb</a> <a href='#SkPath_RawIter_peek'>peek</a> const;
|
|
<a href='undocumented#SkScalar'>SkScalar</a> <a href='#SkPath_RawIter_conicWeight'>conicWeight</a> const;
|
|
}
|
|
</pre>
|
|
|
|
Iterates through <a href='#Verb_Array'>Verb Array</a>, and associated <a href='#Point_Array'>Point Array</a> and <a href='#Conic_Weight'>Conic Weight</a>.
|
|
<a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Conic Weight</a> are returned unaltered.
|
|
|
|
<a name='SkPath_RawIter_RawIter'></a>
|
|
## RawIter
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath_RawIter_RawIter'>RawIter</a>()
|
|
</pre>
|
|
|
|
Initializes <a href='#SkPath_RawIter_RawIter'>RawIter</a> with an empty <a href='#Path'>Path</a>. <a href='#SkPath_RawIter_next'>next</a> on <a href='#SkPath_RawIter_RawIter'>RawIter</a> returns <a href='#SkPath_kDone_Verb'>kDone Verb</a>.
|
|
Call <a href='#SkPath_RawIter_setPath'>setPath</a> to initialize <a href='#SkPath_Iter'>SkPath::Iter</a> at a later time.
|
|
|
|
### Return Value
|
|
|
|
<a href='#SkPath_RawIter_RawIter'>RawIter</a> of empty <a href='#Path'>Path</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_RawIter_copy_const_SkPath'></a>
|
|
## RawIter
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath_RawIter_RawIter'>RawIter</a>(const <a href='#SkPath'>SkPath</a>& path)
|
|
</pre>
|
|
|
|
Sets <a href='#SkPath_RawIter_RawIter'>RawIter</a> to return elements of <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Conic Weight</a> in <a href='#SkPath_RawIter_copy_const_SkPath_path'>path</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_RawIter_copy_const_SkPath_path'><code><strong>path</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> to iterate</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
<a href='#SkPath_RawIter_RawIter'>RawIter</a> of <a href='#SkPath_RawIter_copy_const_SkPath_path'>path</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_RawIter_setPath'></a>
|
|
## setPath
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkPath_RawIter_setPath'>setPath</a>(const <a href='#SkPath'>SkPath</a>& path)
|
|
</pre>
|
|
|
|
Sets <a href='#SkPath_Iter'>SkPath::Iter</a> to return elements of <a href='#Verb_Array'>Verb Array</a>, <a href='#Point_Array'>Point Array</a>, and <a href='#Conic_Weight'>Conic Weight</a> in <a href='#SkPath_RawIter_setPath_path'>path</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_RawIter_setPath_path'><code><strong>path</strong></code></a></td>
|
|
<td><a href='#Path'>Path</a> to iterate</td>
|
|
</tr>
|
|
</table>
|
|
|
|
---
|
|
|
|
<a name='SkPath_RawIter_next'></a>
|
|
## next
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkPath_Verb'>Verb</a> <a href='#SkPath_RawIter_next'>next</a>(<a href='SkPoint_Reference#SkPoint'>SkPoint</a> pts[4])
|
|
</pre>
|
|
|
|
Returns next <a href='#SkPath_Verb'>Verb</a> in <a href='#Verb_Array'>Verb Array</a>, and advances <a href='#SkPath_RawIter_RawIter'>RawIter</a>.
|
|
When <a href='#Verb_Array'>Verb Array</a> is exhausted, returns <a href='#SkPath_kDone_Verb'>kDone Verb</a>.
|
|
Zero to four <a href='SkPoint_Reference#Point'>Points</a> are stored in <a href='#SkPath_RawIter_next_pts'>pts</a>, depending on the returned <a href='#SkPath_Verb'>Verb</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkPath_RawIter_next_pts'><code><strong>pts</strong></code></a></td>
|
|
<td>storage for <a href='SkPoint_Reference#Point'>Point</a> data describing returned <a href='#SkPath_Verb'>Verb</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
next <a href='#SkPath_Verb'>Verb</a> from <a href='#Verb_Array'>Verb Array</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="944a80c7ff8c04e1fecc4aec4a47ea60">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
kMove_Verb {50, 60},
|
|
kQuad_Verb {50, 60}, {10, 20}, {30, 40},
|
|
kClose_Verb {50, 60},
|
|
kMove_Verb {50, 60},
|
|
kLine_Verb {50, 60}, {30, 30},
|
|
kConic_Verb {30, 30}, {1, 2}, {3, 4}, weight = 0.5
|
|
kCubic_Verb {3, 4}, {-1, -2}, {-3, -4}, {-5, -6},
|
|
kDone_Verb
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkPath_RawIter_peek'>peek</a>
|
|
|
|
---
|
|
|
|
<a name='SkPath_RawIter_peek'></a>
|
|
## peek
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<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
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<a href='#SkPath_Verb'>Verb</a> <a href='#SkPath_RawIter_peek'>peek</a>() const
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</pre>
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Returns next <a href='#SkPath_Verb'>Verb</a>, but does not advance <a href='#SkPath_RawIter_RawIter'>RawIter</a>.
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### Return Value
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next <a href='#SkPath_Verb'>Verb</a> from <a href='#Verb_Array'>Verb Array</a>
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### Example
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<div><fiddle-embed name="eb5fa5bea23059ce538e883502f828f5">
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#### Example Output
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~~~~
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#Volatile
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peek Move == verb Move
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peek Quad == verb Quad
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peek Conic == verb Conic
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peek Cubic == verb Cubic
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peek Done == verb Done
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peek Done == verb Done
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~~~~
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</fiddle-embed></div>
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StdOut is not really volatile, it just produces the wrong result.
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A simple fix changes the output of hairlines and needs to be
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investigated to see if the change is correct or not.
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see change 21340 (abandoned for now)
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### See Also
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<a href='#SkPath_RawIter_next'>next</a>
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---
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<a name='SkPath_RawIter_conicWeight'></a>
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## conicWeight
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<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
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<a href='undocumented#SkScalar'>SkScalar</a> <a href='#SkPath_RawIter_conicWeight'>conicWeight</a>() const
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</pre>
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Returns <a href='#Conic_Weight'>Conic Weight</a> if <a href='#SkPath_RawIter_next'>next</a> returned <a href='#SkPath_kConic_Verb'>kConic Verb</a>.
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If <a href='#SkPath_RawIter_next'>next</a> has not been called, or <a href='#SkPath_RawIter_next'>next</a> did not return <a href='#SkPath_kConic_Verb'>kConic Verb</a>,
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result is undefined.
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### Return Value
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<a href='#Conic_Weight'>Conic Weight</a> for <a href='#Conic'>Conic</a> <a href='SkPoint_Reference#Point'>Points</a> returned by <a href='#SkPath_RawIter_next'>next</a>
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### Example
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<div><fiddle-embed name="69f360a0ba8f40c51ef4cd9f972c5893">
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#### Example Output
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~~~~
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first verb is move
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next verb is conic
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conic points: {0,0}, {1,2}, {3,4}
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conic weight: 0.5
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~~~~
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</fiddle-embed></div>
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### See Also
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<a href='#Conic_Weight'>Conic Weight</a>
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---
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