2018-08-10 17:09:13 +00:00
SkRegion Reference
===
# <a name='Region'>Region</a>
< a href = '#Region' > Region< / a > is a compressed one bit mask. < a href = '#Region' > Region< / a > describes an aliased clipping area
on integer boundaries. < a href = '#Region' > Region< / a > can also describe an array of integer rectangles.
< a href = 'SkCanvas_Reference#Canvas' > Canvas< / a > uses < a href = '#Region' > Region< / a > to reduce the current clip. < a href = '#Region' > Region< / a > may be drawn to < a href = 'SkCanvas_Reference#Canvas' > Canvas< / a > ;
< a href = 'SkPaint_Reference#Paint' > Paint< / a > determines if < a href = '#Region' > Region< / a > is filled or stroked, its < a href = 'SkColor_Reference#Color' > Color< / a > , and so on.
< a href = '#Region' > Region< / a > may be constructed from < a href = 'SkIRect_Reference#IRect' > IRect< / a > array or < a href = 'SkPath_Reference#Path' > Path< / a > . Diagonal lines and curves
in < a href = 'SkPath_Reference#Path' > Path< / a > become integer rectangle edges. < a href = '#Region' > Regions< / a > operators compute union,
intersection, difference, and so on. < a href = 'SkCanvas_Reference#Canvas' > Canvas< / a > allows only intersection and
difference; successive clips can only reduce available < a href = 'SkCanvas_Reference#Canvas' > Canvas< / a > area.
# <a name='SkRegion'>Class SkRegion</a>
< a href = '#SkRegion' > SkRegion< / a > describes the set of pixels used to clip < a href = 'SkCanvas_Reference#Canvas' > Canvas< / a > . < a href = '#SkRegion' > SkRegion< / a > is compact,
efficiently storing a single integer rectangle, or a run length encoded array
of rectangles. < a href = '#SkRegion' > SkRegion< / a > may reduce the current < a href = 'SkCanvas_Reference#Clip' > Canvas Clip< / a > , or may be drawn as
one or more integer rectangles. < a href = '#SkRegion' > SkRegion< / a > iterator returns the scan lines or
rectangles contained by it, optionally intersecting a bounding rectangle.
## Overview
< 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 = '#Class' > Class Declarations</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > embedded class members</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#Constant' > Constants</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > enum and enum class, and their const values</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#Constructor' > Constructors</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > functions that construct < a href = '#SkRegion' > SkRegion</ a ></ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#Member_Function' > Functions</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > global and class member functions</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#Operator' > Operators</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > operator overloading methods</ td >
< / tr >
< / table >
## <a name='Constant'>Constant</a>
SkRegion related constants are defined by < code > enum< / code > , < code > enum class< / code > , < code > #define< / code > , < code > const< / code > , and < code > constexpr< / code > .
< 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 = 'undocumented#Op' > Op</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > binary operator combining < a href = '#Region' > Regions</ a ></ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_kDifference_Op' > kDifference Op</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > target minus operand</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_kIntersect_Op' > kIntersect Op</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > target intersected with operand</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_kLastOp' > kLastOp</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > last operator</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_kOpCnt' > kOpCnt</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > number of operators defined</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_kReplace_Op' > kReplace Op</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > replace target with operand</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_kReverseDifference_Op' > kReverseDifference Op</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > operand minus target</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_kUnion_Op' > kUnion Op</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > target unioned with operand</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_kXOR_Op' > kXOR Op</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > target exclusive or with operand</ td >
< / tr >
< / table >
## <a name='Class'>Class</a>
SkRegion 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 = '#SkRegion_Cliperator' > Cliperator</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > iterator returning < a href = 'SkIRect_Reference#IRect' > IRect</ a > within clip</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_Iterator' > Iterator</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > iterator returning < a href = 'SkIRect_Reference#IRect' > IRect</ a ></ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_Spanerator' > Spanerator</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > horizontal line segment iterator</ td >
< / tr >
< / table >
## <a name='Constructor'>Constructor</a>
SkRegion 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 = '#SkRegion_empty_constructor' > SkRegion()</ 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 = '#SkRegion_copy_const_SkIRect' > SkRegion(const SkIRect& rect)</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > constructs < a href = '#Region' > Region</ a > matching < a href = 'SkIRect_Reference#IRect' > IRect</ a ></ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_copy_const_SkRegion' > SkRegion(const SkRegion& region)</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > makes a shallow copy</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_set' > set</ 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 = '#SkRegion_setEmpty' > setEmpty</ 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 = '#SkRegion_setPath' > setPath</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > constructs < a href = '#Region' > Region</ a > from clipped < a href = 'SkPath_Reference#Path' > Path</ a ></ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_setRect' > setRect</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > constructs < a href = '#Region' > Region</ a > matching < a href = 'SkIRect_Reference#IRect' > IRect</ 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 = '#SkRegion_setRect' > setRect(const SkIRect& 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 = '#SkRegion_setRect_2' > setRect(int32 t left, int32 t top, int32 t right, int32 t bottom)</ a ></ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_setRects' > setRects</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > sets < a href = 'SkIRect_Reference#IRect' > IRect</ a > array</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_setRegion' > setRegion</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > copies < a href = '#Region' > Region</ a ></ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_destructor' > ~SkRegion()</ 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>
SkRegion 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 = '#SkRegion_notequal1_operator' > operator!=(const SkRegion& other) const</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > compares < a href = '#Region' > Regions</ a > for inequality</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_copy_operator' > operator=(const SkRegion& region)</ 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 = '#SkRegion_equal1_operator' > operator==(const SkRegion& other) const</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > compares < a href = '#Region' > Regions</ a > for equality</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_swap' > swap</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > exchanges < a href = '#Region' > Region</ a > pair</ td >
< / tr >
< / table >
## <a name='Member_Function'>Member Function</a>
SkRegion 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 = '#SkRegion_computeRegionComplexity' > computeRegionComplexity</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > returns relative complexity</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_contains' > contains</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > returns true if points are equal or inside</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_getBoundaryPath' > getBoundaryPath</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > appends < a href = '#Region' > Region</ a > outline to < a href = 'SkPath_Reference#Path' > Path</ a ></ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_getBounds' > getBounds</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > returns maximum and minimum of < a href = 'SkIRect_Reference#IRect' > IRect</ a > array</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_intersects' > intersects</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > returns true if areas overlap</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_isComplex' > isComplex</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > returns true if < a href = '#Region' > Region</ a > contains more than one < a href = 'SkIRect_Reference#IRect' > IRect</ a ></ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_isEmpty' > isEmpty</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > returns if bounds has no width or height</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_isRect' > isRect</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > returns if < a href = '#Region' > Region</ a > contains one < a href = 'SkIRect_Reference#IRect' > IRect</ a ></ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_op' > op</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > applies binary operator</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_quickContains' > quickContains</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > returns true quickly if points are equal or inside</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_quickReject' > quickReject</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > returns true quickly if points are outside</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_readFromMemory' > readFromMemory</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > reads from buffer</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_set' > set</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > makes a shallow copy</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_setEmpty' > setEmpty</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > constructs with default values</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_setPath' > setPath</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > constructs < a href = '#Region' > Region</ a > from clipped < a href = 'SkPath_Reference#Path' > Path</ a ></ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_setRect' > setRect</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > constructs < a href = '#Region' > Region</ a > matching < a href = 'SkIRect_Reference#IRect' > IRect</ a ></ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_setRects' > setRects</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > sets < a href = 'SkIRect_Reference#IRect' > IRect</ a > array</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_setRegion' > setRegion</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > copies < a href = '#Region' > Region</ a ></ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_swap' > swap</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > exchanges < a href = '#Region' > Region</ a > pair</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_toString' > toString</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > exists for Android framework only</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_translate' > translate</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > translates < a href = 'SkIPoint_Reference#IPoint' > IPoints</ a > in < a href = '#Region' > Region</ a ></ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_writeToMemory' > writeToMemory</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > writes to buffer</ td >
< / tr >
< / table >
# <a name='SkRegion_Iterator'>Class SkRegion::Iterator</a>
## <a name='Constructor'>Constructor</a>
SkRegion::Iterator 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 = '#SkRegion_Iterator_copy_const_SkRegion' > Iterator(const SkRegion& region)</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > constructs < a href = '#Region' > Region</ a > iterator</ td >
< / tr >
< / table >
## <a name='Member_Function'>Member_Function</a>
SkRegion::Iterator 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 = '#SkRegion_Iterator_Iterator' > Iterator()</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > constructs < a href = '#Region' > Region</ a > iterator</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_Iterator_done' > done</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > returns if data parsing is complete</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_Iterator_next' > next</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > advances to next < a href = 'SkIRect_Reference#IRect' > IRect</ a ></ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_Iterator_rect' > rect</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > returns part of < a href = '#Region' > Region</ a > as < a href = 'SkIRect_Reference#IRect' > IRect</ a ></ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_Iterator_reset' > reset</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > sets < a href = '#Region' > Region</ a > to iterate</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_Iterator_rewind' > rewind</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > points < a href = '#SkRegion_Iterator_Iterator' > Iterator</ a > to start</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_Iterator_rgn' > rgn</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > returns original < a href = '#Region' > Region</ a ></ td >
< / tr >
< / table >
< pre style = "padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0 " >
class < a href = '#SkRegion_Iterator_Iterator' > Iterator< / a > {
public:
< a href = '#SkRegion_Iterator_Iterator' > Iterator()< / a > ;
< a href = '#SkRegion_Iterator_copy_const_SkRegion' > Iterator(const SkRegion& region)< / a > ;
bool < a href = '#SkRegion_Iterator_rewind' > rewind< / a > ;
void < a href = '#SkRegion_Iterator_reset' > reset(const SkRegion& region)< / a > ;
bool < a href = '#SkRegion_Iterator_done' > done< / a > const;
void < a href = '#SkRegion_Iterator_next' > next< / a > ;
const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & < a href = '#SkRegion_Iterator_rect' > rect< / a > ;
const < a href = '#SkRegion' > SkRegion< / a > * < a href = '#SkRegion_Iterator_rgn' > rgn< / a > ;
};
< / pre >
Returns sequence of rectangles, sorted along y-axis, then x-axis, that make
up < a href = '#Region' > Region< / a > .
< a name = 'SkRegion_Iterator_Iterator' > < / a >
## Iterator
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
< a href = '#SkRegion_Iterator_Iterator' > Iterator< / a > ()
< / pre >
Initializes < a href = '#SkRegion_Iterator_Iterator' > Iterator< / a > with an empty < a href = '#Region' > Region< / a > . < a href = '#SkRegion_Iterator_done' > done< / a > on < a href = '#SkRegion_Iterator_Iterator' > Iterator< / a > returns true.
Call < a href = '#SkRegion_Iterator_reset' > reset< / a > to initialized < a href = '#SkRegion_Iterator_Iterator' > Iterator< / a > at a later time.
### Return Value
empty < a href = '#Region' > Region< / a > ierator
### Example
< div > < fiddle-embed name = "a2db43ee3cbf6893e9b23927fb44298a" >
#### Example Output
~~~~
rect={1,2,3,4}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_Iterator_reset' > reset< / a > < a href = '#SkRegion' > SkRegion< / a >
---
< a name = 'SkRegion_Iterator_copy_const_SkRegion' > < / a >
## Iterator
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
< a href = '#SkRegion_Iterator_Iterator' > Iterator< / a > (const < a href = '#SkRegion' > SkRegion< / a > & region)
< / pre >
Sets < a href = '#SkRegion_Iterator_Iterator' > Iterator< / a > to return elements of < a href = 'SkIRect_Reference#IRect' > IRect< / a > array in < a href = '#SkRegion_Iterator_copy_const_SkRegion_region' > region< / a > .
### Parameters
< table > < tr > < td > < a name = 'SkRegion_Iterator_copy_const_SkRegion_region' > < code > < strong > region< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > to iterate< / td >
< / tr >
< / table >
### Return Value
< a href = '#Region' > Region< / a > iterator
### Example
< div > < fiddle-embed name = "e317ceca48a6a7504219af58f35d2c95" >
#### Example Output
~~~~
rect={1,2,3,4}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_Iterator_reset' > reset< / a > < a href = '#SkRegion' > SkRegion< / a > < a href = '#SkRegion_Cliperator' > Cliperator< / a > < a href = '#SkRegion_Spanerator' > Spanerator< / a >
---
< a name = 'SkRegion_Iterator_rewind' > < / a >
## rewind
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_Iterator_rewind' > rewind< / a > ()
< / pre >
< a href = 'SkPoint_Reference#Point' > Points< / a > < a href = '#SkRegion_Iterator_Iterator' > Iterator< / a > to start of < a href = '#Region' > Region< / a > .
Returns true if < a href = '#Region' > Region< / a > was set; otherwise, returns false.
### Return Value
true if < a href = '#Region' > Region< / a > was set
### Example
< div > < fiddle-embed name = "32d51e959d6cc720a74ec4822511e2cd" >
#### Example Output
~~~~
#Volatile
empty iter rewind success=false
empty iter rect={0,0,0,0}
empty region rewind success=true
empty region rect={0,0,0,0}
after set rect rect={1,2,3,4}
after rewind rewind success=true
after rewind rect={1,2,3,4}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_Iterator_reset' > reset< / a >
---
< a name = 'SkRegion_Iterator_reset' > < / a >
## reset
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
void < a href = '#SkRegion_Iterator_reset' > reset< / a > (const < a href = '#SkRegion' > SkRegion< / a > & region)
< / pre >
Resets iterator, using the new < a href = '#Region' > Region< / a > .
### Parameters
< table > < tr > < td > < a name = 'SkRegion_Iterator_reset_region' > < code > < strong > region< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > to iterate< / td >
< / tr >
< / table >
### Example
< div > < fiddle-embed name = "d153f87bd518a4ab947b7e407ea1db79" >
#### Example Output
~~~~
empty region: done=true
after set rect: done=true
after reset: done=false
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_Iterator_rewind' > rewind< / a >
---
< a name = 'SkRegion_Iterator_done' > < / a >
## done
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_Iterator_done' > done< / a > () const
< / pre >
Returns true if < a href = '#SkRegion_Iterator_Iterator' > Iterator< / a > is pointing to final < a href = 'SkIRect_Reference#IRect' > IRect< / a > in < a href = '#Region' > Region< / a > .
### Return Value
true if data parsing is complete
### Example
< div > < fiddle-embed name = "814efa7d7f4ae52dfc861a937c1b5c25" >
#### Example Output
~~~~
done=true
done=false
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_Iterator_next' > next< / a > < a href = '#SkRegion_Iterator_rect' > rect< / a >
---
< a name = 'SkRegion_Iterator_next' > < / a >
## next
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
void < a href = '#SkRegion_Iterator_next' > next< / a > ()
< / pre >
Advances < a href = '#SkRegion_Iterator_Iterator' > Iterator< / a > to next < a href = 'SkIRect_Reference#IRect' > IRect< / a > in < a href = '#Region' > Region< / a > if it is not done.
### Example
< div > < fiddle-embed name = "771236c2eadfc2fcd02a3e61a0875d39" >
#### Example Output
~~~~
rect={1,2,3,4}
rect={5,6,7,8}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_Iterator_done' > done< / a > < a href = '#SkRegion_Iterator_rect' > rect< / a >
---
< a name = 'SkRegion_Iterator_rect' > < / a >
## rect
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & < a href = '#SkRegion_Iterator_rect' > rect< / a > () const
< / pre >
Returns < a href = 'SkIRect_Reference#IRect' > IRect< / a > element in < a href = '#Region' > Region< / a > . Does not return predictable results if < a href = '#Region' > Region< / a >
is empty.
### Return Value
part of < a href = '#Region' > Region< / a > as < a href = 'SkIRect_Reference#IRect' > IRect< / a >
### Example
< div > < fiddle-embed name = "0e7c58ab5d3bcfb36b1f8464cf6c7d89" >
#### Example Output
~~~~
#Volatile
rect={0,0,0,0}
rect={1,2,3,4}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_Iterator_next' > next< / a > < a href = '#SkRegion_Iterator_done' > done< / a >
---
< a name = 'SkRegion_Iterator_rgn' > < / a >
## rgn
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
const < a href = '#SkRegion' > SkRegion< / a > * < a href = '#SkRegion_Iterator_rgn' > rgn< / a > () const
< / pre >
Returns < a href = '#Region' > Region< / a > if set; otherwise, returns nullptr.
### Return Value
iterated < a href = '#Region' > Region< / a >
### Example
< div > < fiddle-embed name = "bbc3c454a21186e2a16e843a5b061c44" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_Iterator_Iterator' > Iterator< / a > < a href = '#SkRegion_Iterator_reset' > reset< / a >
---
# <a name='SkRegion_Cliperator'>Class SkRegion::Cliperator</a>
## <a name='Constructor'>Constructor</a>
SkRegion::Cliperator 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 = '#SkRegion_Cliperator_const_SkRegion_const_SkIRect' > Cliperator(const SkRegion& region, const SkIRect& clip)</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > constructs < a href = '#Region' > Region</ a > iterator with clip</ td >
< / tr >
< / table >
## <a name='Member_Function'>Member_Function</a>
SkRegion::Cliperator 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 = '#SkRegion_Cliperator_done' > done</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > returns if data parsing is complete</ td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_Cliperator_next' > next</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > advances to next < a href = 'SkIRect_Reference#IRect' > IRect</ a > within clip</ td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a href = '#SkRegion_Cliperator_rect' > rect</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > returns part of < a href = '#Region' > Region</ a > as < a href = 'SkIRect_Reference#IRect' > IRect</ a > intersected with clip</ td >
< / tr >
< / table >
< pre style = "padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0 " >
class SK_API < a href = '#SkRegion_Cliperator' > Cliperator< / a > {
public:
2018-09-07 18:02:51 +00:00
< a href = '#SkRegion_Cliperator' > Cliperator(const SkRegion& , const SkIRect& clip)< / a > ;
2018-08-10 17:09:13 +00:00
bool < a href = '#SkRegion_Cliperator_done' > done< / a > ;
void < a href = '#SkRegion_Cliperator_next' > next< / a > ;
const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & < a href = '#SkRegion_Cliperator_rect' > rect< / a > const;
};
< / pre >
Returns the sequence of rectangles, sorted along y-axis, then x-axis, that make
up < a href = '#Region' > Region< / a > intersected with the specified clip rectangle.
< a name = 'SkRegion_Cliperator_const_SkRegion_const_SkIRect' > < / a >
## Cliperator
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
< a href = '#SkRegion_Cliperator' > Cliperator< / a > (const < a href = '#SkRegion' > SkRegion< / a > & region, const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & clip)
< / pre >
Sets < a href = '#SkRegion_Cliperator' > Cliperator< / a > to return elements of < a href = 'SkIRect_Reference#IRect' > IRect< / a > array in < a href = '#Region' > Region< / a > within < a href = '#SkRegion_Cliperator_const_SkRegion_const_SkIRect_clip' > clip< / a > .
### Parameters
< table > < tr > < td > < a name = 'SkRegion_Cliperator_const_SkRegion_const_SkIRect_region' > < code > < strong > region< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > to iterate< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_Cliperator_const_SkRegion_const_SkIRect_clip' > < code > < strong > clip< / strong > < / code > < / a > < / td >
< td > bounds of iteration< / td >
< / tr >
< / table >
### Return Value
< a href = '#Region' > Region< / a > iterator
### Example
< div > < fiddle-embed name = "3831fb6006a7e0ad5d140c266c22be78" >
#### Example Output
~~~~
rect={1,2,2,3}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion' > SkRegion< / a > < a href = '#SkRegion_Iterator' > Iterator< / a > < a href = '#SkRegion_Spanerator' > Spanerator< / a >
---
< a name = 'SkRegion_Cliperator_done' > < / a >
## done
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_Cliperator_done' > done< / a > ()
< / pre >
Returns true if < a href = '#SkRegion_Cliperator' > Cliperator< / a > is pointing to final < a href = 'SkIRect_Reference#IRect' > IRect< / a > in < a href = '#Region' > Region< / a > .
### Return Value
true if data parsing is complete
### Example
< div > < fiddle-embed name = "6cca7b96836266800d852664a1366453" >
#### Example Output
~~~~
empty region done=true
after add rect done=false
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_Cliperator_next' > next< / a > < a href = '#SkRegion_Cliperator_rect' > rect< / a >
---
< a name = 'SkRegion_Cliperator_next' > < / a >
## next
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
void < a href = '#SkRegion_Cliperator_next' > next< / a > ()
< / pre >
Advances iterator to next < a href = 'SkIRect_Reference#IRect' > IRect< / a > in < a href = '#Region' > Region< / a > contained by clip.
### Example
< div > < fiddle-embed name = "3bbcc7eec19c808a8167bbcc987199f8" >
#### Example Output
~~~~
rect={1,3,3,4}
rect={5,6,7,7}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_Cliperator_done' > done< / a >
---
< a name = 'SkRegion_Cliperator_rect' > < / a >
## rect
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & < a href = '#SkRegion_Cliperator_rect' > rect< / a > () const
< / pre >
Returns < a href = 'SkIRect_Reference#IRect' > IRect< / a > element in < a href = '#Region' > Region< / a > , intersected with clip passed to < a href = '#SkRegion_Cliperator' > Cliperator< / a >
constructor. Does not return predictable results if < a href = '#Region' > Region< / a >
is empty.
### Return Value
part of < a href = '#Region' > Region< / a > inside clip as < a href = 'SkIRect_Reference#IRect' > IRect< / a >
### Example
< div > < fiddle-embed name = "05791751f00b4c2426093fa143b43bc7" >
#### Example Output
~~~~
#Volatile
empty region rect={1094713344,1065353216,0,-1}
after set rect rect={1,2,3,3}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_Cliperator_next' > next< / a > < a href = '#SkRegion_Cliperator_done' > done< / a >
---
# <a name='SkRegion_Spanerator'>Class SkRegion::Spanerator</a>
## <a name='Constructor'>Constructor</a>
SkRegion::Spanerator 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 = '#SkRegion_Spanerator_const_SkRegion_int_int_int' > Spanerator(const SkRegion& region, int y, int left, int right)</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > constructs < a href = '#Region' > Region</ a > iterator on scan line</ td >
< / tr >
< / table >
## <a name='Member_Function'>Member_Function</a>
SkRegion::Spanerator 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 = '#SkRegion_Spanerator_next' > next</ a ></ td >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' > advances to next span on horizontal line</ td >
< / tr >
< / table >
< pre style = "padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0 " >
class < a href = '#SkRegion_Spanerator' > Spanerator< / a > {
public:
< a href = '#SkRegion_Spanerator_const_SkRegion_int_int_int' > Spanerator(const SkRegion& region, int y, int left, int right)< / a > ;
bool < a href = '#SkRegion_Spanerator_next' > next(int* left, int* right)< / a > ;
};
< / pre >
Returns the line segment ends within < a href = '#Region' > Region< / a > that intersect a horizontal line.
< a name = 'SkRegion_Spanerator_const_SkRegion_int_int_int' > < / a >
## Spanerator
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
< a href = '#SkRegion_Spanerator' > Spanerator< / a > (const < a href = '#SkRegion' > SkRegion< / a > & region, int y, int left, int right)
< / pre >
Sets < a href = '#SkRegion_Spanerator' > Spanerator< / a > to return line segments in < a href = '#Region' > Region< / a > on scan line.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_Spanerator_const_SkRegion_int_int_int_region' > < code > < strong > region< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > to iterate< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_Spanerator_const_SkRegion_int_int_int_y' > < code > < strong > y< / strong > < / code > < / a > < / td >
< td > horizontal line to intersect< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_Spanerator_const_SkRegion_int_int_int_left' > < code > < strong > left< / strong > < / code > < / a > < / td >
< td > bounds of iteration< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_Spanerator_const_SkRegion_int_int_int_right' > < code > < strong > right< / strong > < / code > < / a > < / td >
< td > bounds of iteration< / td >
< / tr >
< / table >
### Return Value
< a href = '#Region' > Region< / a > iterator
### Example
< div > < fiddle-embed name = "3073b3f8ea7252871b6156ff674dc385" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion' > SkRegion< / a > < a href = '#SkRegion_Iterator' > Iterator< / a > < a href = '#SkRegion_Cliperator' > Cliperator< / a >
---
< a name = 'SkRegion_Spanerator_next' > < / a >
## next
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_Spanerator_next' > next< / a > (int* left, int* right)
< / pre >
Advances iterator to next span intersecting < a href = '#Region' > Region< / a > within line segment provided
in constructor. Returns true if interval was found.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_Spanerator_next_left' > < code > < strong > left< / strong > < / code > < / a > < / td >
< td > pointer to span start; may be nullptr< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_Spanerator_next_right' > < code > < strong > right< / strong > < / code > < / a > < / td >
< td > pointer to span end; may be nullptr< / td >
< / tr >
< / table >
### Return Value
true if interval was found
### Example
< div > < fiddle-embed name = "03d02180fee5f64ec4a3347e118fb2ec" >
#### Example Output
~~~~
empty region: result=false
after set rect: result=true left=2 right=3
~~~~
< / fiddle-embed > < / div >
### See Also
done
---
< a name = 'SkRegion_empty_constructor' > < / a >
## SkRegion
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
< a href = '#SkRegion' > SkRegion< / a > ()
< / pre >
Constructs an empty < a href = '#Region' > Region< / a > . < a href = '#Region' > Region< / a > is set to empty bounds
at (0, 0) with zero width and height.
### Return Value
empty < a href = '#Region' > Region< / a >
### Example
< div > < fiddle-embed name = "4549dcda3e0f9a41b3daee0ed37deca8" >
#### Example Output
~~~~
region bounds: {0, 0, 0, 0}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_setEmpty' > setEmpty< / a >
---
< a name = 'SkRegion_copy_const_SkRegion' > < / a >
## SkRegion
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
< a href = '#SkRegion' > SkRegion< / a > (const < a href = '#SkRegion' > SkRegion< / a > & region)
< / pre >
Constructs a copy of an existing < a href = '#SkRegion_copy_const_SkRegion_region' > region< / a > .
Copy constructor makes two regions identical by value. Internally, < a href = '#SkRegion_copy_const_SkRegion_region' > region< / a > and
the returned result share pointer values. The underlying < a href = 'SkRect_Reference#Rect' > Rect< / a > array is
copied when modified.
Creating a < a href = '#Region' > Region< / a > copy is very efficient and never allocates memory.
< a href = '#Region' > Regions< / a > are always copied by value from the interface; the underlying shared
pointers are not exposed.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_copy_const_SkRegion_region' > < code > < strong > region< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > to copy by value< / td >
< / tr >
< / table >
### Return Value
copy of < a href = '#Region' > Region< / a >
### Example
< div > < fiddle-embed name = "3daa83fca809b9ec6560d2ef9e2da5e6" >
#### Example Output
~~~~
region bounds: {1,2,3,4}
region2 bounds: {1,2,3,4}
after region set empty:
region bounds: {0,0,0,0}
region2 bounds: {1,2,3,4}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_setRegion' > setRegion< / a > < a href = '#SkRegion_copy_operator' > operator=(const SkRegion& region)< / a >
---
< a name = 'SkRegion_copy_const_SkIRect' > < / a >
## SkRegion
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
explicit < a href = '#SkRegion' > SkRegion< / a > (const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & rect)
< / pre >
Constructs a rectangular < a href = '#Region' > Region< / a > matching the bounds of < a href = '#SkRegion_copy_const_SkIRect_rect' > rect< / a > .
### Parameters
< table > < tr > < td > < a name = 'SkRegion_copy_const_SkIRect_rect' > < code > < strong > rect< / strong > < / code > < / a > < / td >
< td > bounds of constructed < a href = '#Region' > Region< / a > < / td >
< / tr >
< / table >
### Return Value
rectangular < a href = '#Region' > Region< / a >
### Example
< div > < fiddle-embed name = "5253910233f7961c30b4c18ab911e917" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_setRect' > setRect< / a > < sup > < a href = '#SkRegion_setRect_2' > [2]< / a > < / sup > < a href = '#SkRegion_setRegion' > setRegion< / a >
---
< a name = 'SkRegion_destructor' > < / a >
## ~SkRegion
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
< a href = '#SkRegion_destructor' > ~SkRegion< / a > ()
< / pre >
Releases ownership of any shared data and deletes data if < a href = '#Region' > Region< / a > is sole owner.
### Example
< div > < fiddle-embed name = "985ff654a6b67288d322c748132a088e" > < div > delete calls < a href = '#Region' > Region< / a > < a href = 'undocumented#Destructor' > Destructor< / a > , but copy of original in region2 is unaffected.
< / div >
#### Example Output
~~~~
region2 bounds: {1,2,3,4}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_empty_constructor' > SkRegion()< / a > < a href = '#SkRegion_copy_const_SkRegion' > SkRegion(const SkRegion& region)< / a > < a href = '#SkRegion_copy_const_SkIRect' > SkRegion(const SkIRect& rect)< / a > < a href = '#SkRegion_copy_operator' > operator=(const SkRegion& region)< / a >
---
< a name = 'SkRegion_copy_operator' > < / a >
## operator=
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
< a href = '#SkRegion' > SkRegion< / a > & < a href = '#SkRegion_copy_operator' > operator=(const SkRegion& region)< / a >
< / pre >
Constructs a copy of an existing < a href = '#SkRegion_copy_operator_region' > region< / a > .
Makes two regions identical by value. Internally, < a href = '#SkRegion_copy_operator_region' > region< / a > and
the returned result share pointer values. The underlying < a href = 'SkRect_Reference#Rect' > Rect< / a > array is
copied when modified.
Creating a < a href = '#Region' > Region< / a > copy is very efficient and never allocates memory.
< a href = '#Region' > Regions< / a > are always copied by value from the interface; the underlying shared
pointers are not exposed.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_copy_operator_region' > < code > < strong > region< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > to copy by value< / td >
< / tr >
< / table >
### Return Value
< a href = '#Region' > Region< / a > to copy by value
### Example
< div > < fiddle-embed name = "e8513f6394c24efaa301d41921c5241a" >
#### Example Output
~~~~
region1 bounds: {1,2,3,4}
region2 bounds: {1,2,3,4}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_set' > set< / a > < a href = '#SkRegion_swap' > swap< / a > < a href = '#SkRegion_copy_const_SkRegion' > SkRegion(const SkRegion& region)< / a >
---
< a name = 'SkRegion_equal1_operator' > < / a >
## operator==
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool operator==(const SkRegion& other) _const
< / pre >
Compares < a href = '#Region' > Region< / a > and < a href = '#SkRegion_equal1_operator_other' > other< / a > ; returns true if they enclose exactly
the same area.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_equal1_operator_other' > < code > < strong > other< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > to compare< / td >
< / tr >
< / table >
### Return Value
true if < a href = '#Region' > Region< / a > pair are equivalent
### Example
< div > < fiddle-embed name = "d7f4fdc8bc63ca8410ed166ecef0aef3" >
#### Example Output
~~~~
empty one == two
set rect one != two
set empty one == two
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_notequal1_operator' > operator!=(const SkRegion& other) const< / a > < a href = '#SkRegion_copy_operator' > operator=(const SkRegion& region)< / a >
---
< a name = 'SkRegion_notequal1_operator' > < / a >
## operator!=
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool operator!=(const SkRegion& other) _const
< / pre >
Compares < a href = '#Region' > Region< / a > and < a href = '#SkRegion_notequal1_operator_other' > other< / a > ; returns true if they do not enclose the same area.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_notequal1_operator_other' > < code > < strong > other< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > to compare< / td >
< / tr >
< / table >
### Return Value
true if < a href = '#Region' > Region< / a > pair are not equivalent
### Example
< div > < fiddle-embed name = "3357caa9d8d810f200cbccb668182496" >
#### Example Output
~~~~
empty one == two
set rect one != two
union rect one == two
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_equal1_operator' > operator==(const SkRegion& other) const< / a > < a href = '#SkRegion_copy_operator' > operator=(const SkRegion& region)< / a >
---
< a name = 'SkRegion_set' > < / a >
## set
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_set' > set< / a > (const < a href = '#SkRegion' > SkRegion< / a > & src)
< / pre >
Sets < a href = '#Region' > Region< / a > to < a href = '#SkRegion_set_src' > src< / a > , and returns true if < a href = '#SkRegion_set_src' > src< / a > bounds is not empty.
This makes < a href = '#Region' > Region< / a > and < a href = '#SkRegion_set_src' > src< / a > identical by value. Internally,
< a href = '#Region' > Region< / a > and < a href = '#SkRegion_set_src' > src< / a > share pointer values. The underlying < a href = 'SkRect_Reference#Rect' > Rect< / a > array is
copied when modified.
Creating a < a href = '#Region' > Region< / a > copy is very efficient and never allocates memory.
< a href = '#Region' > Regions< / a > are always copied by value from the interface; the underlying shared
pointers are not exposed.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_set_src' > < code > < strong > src< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > to copy< / td >
< / tr >
< / table >
### Return Value
copy of < a href = '#SkRegion_set_src' > src< / a >
### Example
< div > < fiddle-embed name = "b3538117c7ae2cb7de3b42ca45fe1b13" >
#### Example Output
~~~~
region1 bounds: {1,2,3,4}
region2 bounds: {1,2,3,4}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_copy_operator' > operator=(const SkRegion& region)< / a > < a href = '#SkRegion_swap' > swap< / a > < a href = '#SkRegion_copy_const_SkRegion' > SkRegion(const SkRegion& region)< / a >
---
< a name = 'SkRegion_swap' > < / a >
## swap
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
void < a href = '#SkRegion_swap' > swap< / a > (< a href = '#SkRegion' > SkRegion< / a > & other)
< / pre >
Exchanges < a href = 'SkIRect_Reference#IRect' > IRect< / a > array of < a href = '#Region' > Region< / a > and < a href = '#SkRegion_swap_other' > other< / a > . < a href = '#SkRegion_swap' > swap< / a > internally exchanges pointers,
so it is lightweight and does not allocate memory.
< a href = '#SkRegion_swap' > swap< / a > usage has largely been replaced by < a href = '#SkRegion_copy_operator' > operator=(const SkRegion& region)< / a > .
< a href = 'SkPath_Reference#Path' > Paths< / a > do not copy their content on assignment until they are written to,
making assignment as efficient as < a href = '#SkRegion_swap' > swap< / a > .
### Parameters
< table > < tr > < td > < a name = 'SkRegion_swap_other' > < code > < strong > other< / strong > < / code > < / a > < / td >
< td > < a href = '#SkRegion_copy_operator' > operator=(const SkRegion& region)< / a > set< / td >
< / tr >
< / table >
### Example
< div > < fiddle-embed name = "ae67b7b4c198b46c58e48f5af061c8f1" >
#### Example Output
~~~~
region1 bounds: {0,0,0,0}
region2 bounds: {1,2,3,4}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_copy_operator' > operator=(const SkRegion& region)< / a > < a href = '#SkRegion_set' > set< / a > < a href = '#SkRegion_copy_const_SkRegion' > SkRegion(const SkRegion& region)< / a >
---
< a name = 'SkRegion_isEmpty' > < / a >
## isEmpty
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_isEmpty' > isEmpty< / a > () const
< / pre >
Returns true if < a href = '#Region' > Region< / a > is empty.
Empty < a href = '#Region' > Region< / a > has bounds width or height less than or equal to zero.
< a href = '#SkRegion_empty_constructor' > SkRegion()< / a > constructs empty < a href = '#Region' > Region< / a > ; < a href = '#SkRegion_setEmpty' > setEmpty< / a >
and < a href = '#SkRegion_setRect' > setRect< / a > with dimensionless data make < a href = '#Region' > Region< / a > empty.
### Return Value
true if bounds has no width or height
### Example
< div > < fiddle-embed name = "10ef0de39e8553dd97cf8668ce185070" >
#### Example Output
~~~~
initial: region is empty
set rect: region is not empty
set empty: region is empty
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_isRect' > isRect< / a > < a href = '#SkRegion_isComplex' > isComplex< / a > < a href = '#SkRegion_equal1_operator' > operator==(const SkRegion& other) const< / a >
---
< a name = 'SkRegion_isRect' > < / a >
## isRect
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_isRect' > isRect< / a > () const
< / pre >
Returns true if < a href = '#Region' > Region< / a > is one < a href = 'SkIRect_Reference#IRect' > IRect< / a > with positive dimensions.
### Return Value
true if < a href = '#Region' > Region< / a > contains one < a href = 'SkIRect_Reference#IRect' > IRect< / a >
### Example
< div > < fiddle-embed name = "b6adbdddf7fe45a1098121c4e5fd57ea" >
#### Example Output
~~~~
initial: region is not rect
set rect: region is rect
set empty: region is not rect
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_isEmpty' > isEmpty< / a > < a href = '#SkRegion_isComplex' > isComplex< / a >
---
< a name = 'SkRegion_isComplex' > < / a >
## isComplex
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_isComplex' > isComplex< / a > () const
< / pre >
Returns true if < a href = '#Region' > Region< / a > is described by more than one rectangle.
### Return Value
true if < a href = '#Region' > Region< / a > contains more than one < a href = 'SkIRect_Reference#IRect' > IRect< / a >
### Example
< div > < fiddle-embed name = "1fbd76d75ca2d280e81856311de4e54e" >
#### Example Output
~~~~
initial: region is not complex
set rect: region is not complex
op rect: region is complex
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_isEmpty' > isEmpty< / a > < a href = '#SkRegion_isRect' > isRect< / a >
---
< a name = 'SkRegion_getBounds' > < / a >
## getBounds
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & < a href = '#SkRegion_getBounds' > getBounds< / a > () const
< / pre >
Returns minimum and maximum axes values of < a href = 'SkIRect_Reference#IRect' > IRect< / a > array.
Returns (0, 0, 0, 0) if < a href = '#Region' > Region< / a > is empty.
### Return Value
combined bounds of all < a href = 'SkIRect_Reference#IRect' > IRect< / a > elements
### Example
< div > < fiddle-embed name = "651632582d385d2531e7aa551c31e331" >
#### Example Output
~~~~
bounds: {1,2,4,5}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_isEmpty' > isEmpty< / a > < a href = '#SkRegion_isRect' > isRect< / a >
---
< a name = 'SkRegion_computeRegionComplexity' > < / a >
## computeRegionComplexity
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
int < a href = '#SkRegion_computeRegionComplexity' > computeRegionComplexity< / a > () const
< / pre >
Returns a value that increases with the number of
elements in < a href = '#Region' > Region< / a > . Returns zero if < a href = '#Region' > Region< / a > is empty.
Returns one if < a href = '#Region' > Region< / a > equals < a href = 'SkIRect_Reference#IRect' > IRect< / a > ; otherwise, returns
value greater than one indicating that < a href = '#Region' > Region< / a > is complex.
Call to compare < a href = '#Region' > Regions< / a > for relative complexity.
### Return Value
relative complexity
### Example
< div > < fiddle-embed name = "c4984fefdcecdd1090be160f80939d87" >
#### Example Output
~~~~
initial: region complexity 0
set rect: region complexity 1
op rect: region complexity 3
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_isRect' > isRect< / a > < a href = '#SkRegion_isComplex' > isComplex< / a >
---
< a name = 'SkRegion_getBoundaryPath' > < / a >
## getBoundaryPath
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_getBoundaryPath' > getBoundaryPath< / a > (< a href = 'SkPath_Reference#SkPath' > SkPath< / a > * path) const
< / pre >
Appends outline of < a href = '#Region' > Region< / a > to < a href = '#SkRegion_getBoundaryPath_path' > path< / a > .
Returns true if < a href = '#Region' > Region< / a > is not empty; otherwise, returns false, and leaves < a href = '#SkRegion_getBoundaryPath_path' > path< / a >
unmodified.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_getBoundaryPath_path' > < code > < strong > path< / strong > < / code > < / a > < / td >
< td > < a href = 'SkPath_Reference#Path' > Path< / a > to append to< / td >
< / tr >
< / table >
### Return Value
true if < a href = '#SkRegion_getBoundaryPath_path' > path< / a > changed
### Example
< div > < fiddle-embed name = "6631d36406efa3b3e27960c876421a7f" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_isEmpty' > isEmpty< / a > < a href = '#SkRegion_isComplex' > isComplex< / a >
---
< a name = 'SkRegion_setEmpty' > < / a >
## setEmpty
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_setEmpty' > setEmpty< / a > ()
< / pre >
Constructs an empty < a href = '#Region' > Region< / a > . < a href = '#Region' > Region< / a > is set to empty bounds
at (0, 0) with zero width and height. Always returns false.
### Return Value
false
### Example
< div > < fiddle-embed name = "1314f7250963775c5ee89cc5981eee24" >
#### Example Output
~~~~
region bounds: {1,2,3,4}
after region set empty:
region bounds: {0,0,0,0}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_empty_constructor' > SkRegion()< / a >
---
< a name = 'SkRegion_setRect' > < / a >
## setRect
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_setRect' > setRect< / a > (const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & rect)
< / pre >
Constructs a rectangular < a href = '#Region' > Region< / a > matching the bounds of < a href = '#SkRegion_setRect_rect' > rect< / a > .
If < a href = '#SkRegion_setRect_rect' > rect< / a > is empty, constructs empty and returns false.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_setRect_rect' > < code > < strong > rect< / strong > < / code > < / a > < / td >
< td > bounds of constructed < a href = '#Region' > Region< / a > < / td >
< / tr >
< / table >
### Return Value
true if < a href = '#SkRegion_setRect_rect' > rect< / a > is not empty
### Example
< div > < fiddle-embed name = "e12575ffcd262f2364e0e6bece98a825" >
#### Example Output
~~~~
region is not empty
region is empty
setEmpty: false
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_copy_const_SkIRect' > SkRegion(const SkIRect& rect)< / a >
---
< a name = 'SkRegion_setRect_2' > < / a >
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_setRect' > setRect< / a > (int32_t left, int32_t top, int32_t right, int32_t bottom)
< / pre >
Constructs < a href = '#Region' > Region< / a > with bounds (< a href = '#SkRegion_setRect_2_left' > left< / a > , < a href = '#SkRegion_setRect_2_top' > top< / a > , < a href = '#SkRegion_setRect_2_right' > right< / a > , < a href = '#SkRegion_setRect_2_bottom' > bottom< / a > ).
Returns true if < a href = '#SkRegion_setRect_2_left' > left< / a > is less than < a href = '#SkRegion_setRect_2_right' > right< / a > and < a href = '#SkRegion_setRect_2_top' > top< / a > is less than < a href = '#SkRegion_setRect_2_bottom' > bottom< / a > ; otherwise,
constructs empty < a href = '#Region' > Region< / a > and returns false.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_setRect_2_left' > < code > < strong > left< / strong > < / code > < / a > < / td >
< td > edge of bounds on x-axis< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_setRect_2_top' > < code > < strong > top< / strong > < / code > < / a > < / td >
< td > edge of bounds on y-axis< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_setRect_2_right' > < code > < strong > right< / strong > < / code > < / a > < / td >
< td > edge of bounds on x-axis< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_setRect_2_bottom' > < code > < strong > bottom< / strong > < / code > < / a > < / td >
< td > edge of bounds on y-axis< / td >
< / tr >
< / table >
### Return Value
rectangular < a href = '#Region' > Region< / a >
### Example
< div > < fiddle-embed name = "5b31a1b077818a8150ad50f3b19e7bfe" >
#### Example Output
~~~~
set to: 1,2,3,4: success:true {1,2,3,4}
set to: 3,2,1,4: success:false {0,0,0,0}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_copy_const_SkIRect' > SkRegion(const SkIRect& rect)< / a >
---
< a name = 'SkRegion_setRects' > < / a >
## setRects
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_setRects' > setRects< / a > (const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > rects[], int count)
< / pre >
Constructs < a href = '#Region' > Region< / a > as the union of < a href = 'SkIRect_Reference#IRect' > IRect< / a > in < a href = '#SkRegion_setRects_rects' > rects< / a > array. If < a href = '#SkRegion_setRects_count' > count< / a > is
zero, constructs empty < a href = '#Region' > Region< / a > . Returns false if constructed < a href = '#Region' > Region< / a > is empty.
May be faster than repeated calls to < a href = '#SkRegion_op' > op< / a > .
### Parameters
< table > < tr > < td > < a name = 'SkRegion_setRects_rects' > < code > < strong > rects< / strong > < / code > < / a > < / td >
< td > array of < a href = 'SkIRect_Reference#IRect' > IRects< / a > < / td >
< / tr >
< tr > < td > < a name = 'SkRegion_setRects_count' > < code > < strong > count< / strong > < / code > < / a > < / td >
< td > array size< / td >
< / tr >
< / table >
### Return Value
true if constructed < a href = '#Region' > Region< / a > is not empty
### Example
< div > < fiddle-embed name = "fc793a14ed76c096a68a755c963c1ee0" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_setRect' > setRect< / a > < sup > < a href = '#SkRegion_setRect_2' > [2]< / a > < / sup > < a href = '#SkRegion_op' > op< / a > < sup > < a href = '#SkRegion_op_2' > [2]< / a > < / sup > < sup > < a href = '#SkRegion_op_3' > [3]< / a > < / sup > < sup > < a href = '#SkRegion_op_4' > [4]< / a > < / sup > < sup > < a href = '#SkRegion_op_5' > [5]< / a > < / sup > < sup > < a href = '#SkRegion_op_6' > [6]< / a > < / sup >
---
< a name = 'SkRegion_setRegion' > < / a >
## setRegion
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_setRegion' > setRegion< / a > (const < a href = '#SkRegion' > SkRegion< / a > & region)
< / pre >
Constructs a copy of an existing < a href = '#SkRegion_setRegion_region' > region< / a > .
Makes two regions identical by value. Internally, < a href = '#SkRegion_setRegion_region' > region< / a > and
the returned result share pointer values. The underlying < a href = 'SkRect_Reference#Rect' > Rect< / a > array is
copied when modified.
Creating a < a href = '#Region' > Region< / a > copy is very efficient and never allocates memory.
< a href = '#Region' > Regions< / a > are always copied by value from the interface; the underlying shared
pointers are not exposed.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_setRegion_region' > < code > < strong > region< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > to copy by value< / td >
< / tr >
< / table >
### Return Value
< a href = '#Region' > Region< / a > to copy by value
### Example
< div > < fiddle-embed name = "5d75d22bd155576838155762ab040751" >
#### Example Output
~~~~
region bounds: {1,2,3,4}
region2 bounds: {1,2,3,4}
after region set empty:
region bounds: {1,2,3,4}
region2 bounds: {0,0,0,0}
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_copy_const_SkRegion' > SkRegion(const SkRegion& region)< / a >
---
< a name = 'SkRegion_setPath' > < / a >
## setPath
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_setPath' > setPath< / a > (const < a href = 'SkPath_Reference#SkPath' > SkPath< / a > & path, const < a href = '#SkRegion' > SkRegion< / a > & clip)
< / pre >
Constructs < a href = '#Region' > Region< / a > to match outline of < a href = '#SkRegion_setPath_path' > path< / a > within < a href = '#SkRegion_setPath_clip' > clip< / a > .
Returns false if constructed < a href = '#Region' > Region< / a > is empty.
Constructed < a href = '#Region' > Region< / a > draws the same pixels as < a href = '#SkRegion_setPath_path' > path< / a > through < a href = '#SkRegion_setPath_clip' > clip< / a > when
< a href = 'SkPaint_Reference#Anti_Alias' > Anti Aliasing< / a > is disabled.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_setPath_path' > < code > < strong > path< / strong > < / code > < / a > < / td >
< td > < a href = 'SkPath_Reference#Path' > Path< / a > providing outline< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_setPath_clip' > < code > < strong > clip< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > containing < a href = '#SkRegion_setPath_path' > path< / a > < / td >
< / tr >
< / table >
### Return Value
true if constructed < a href = '#Region' > Region< / a > is not empty
### Example
< div > < fiddle-embed name = "45b9ea2247b9ca7f10aa22ea29a426f4" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_setRects' > setRects< / a > < a href = '#SkRegion_op' > op< / a > < sup > < a href = '#SkRegion_op_2' > [2]< / a > < / sup > < sup > < a href = '#SkRegion_op_3' > [3]< / a > < / sup > < sup > < a href = '#SkRegion_op_4' > [4]< / a > < / sup > < sup > < a href = '#SkRegion_op_5' > [5]< / a > < / sup > < sup > < a href = '#SkRegion_op_6' > [6]< / a > < / sup >
---
< a name = 'SkRegion_intersects' > < / a >
## intersects
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_intersects' > intersects< / a > (const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & rect) const
< / pre >
Returns true if < a href = '#Region' > Region< / a > intersects < a href = '#SkRegion_intersects_rect' > rect< / a > .
Returns false if either < a href = '#SkRegion_intersects_rect' > rect< / a > or < a href = '#Region' > Region< / a > is empty, or do not intersect.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_intersects_rect' > < code > < strong > rect< / strong > < / code > < / a > < / td >
< td > < a href = 'SkIRect_Reference#IRect' > IRect< / a > to intersect< / td >
< / tr >
< / table >
### Return Value
true if < a href = '#SkRegion_intersects_rect' > rect< / a > and < a href = '#Region' > Region< / a > have area in common
### Example
< div > < fiddle-embed name = "42bde0ef8c2ee372751428cd6e21c1ca" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_contains' > contains< / a > < sup > < a href = '#SkRegion_contains_2' > [2]< / a > < / sup > < sup > < a href = '#SkRegion_contains_3' > [3]< / a > < / sup > < a href = 'SkRect_Reference#SkRect_intersects' > SkRect::intersects< / a > < sup > < a href = 'SkRect_Reference#SkRect_intersects_2' > [2]< / a > < / sup >
---
< a name = 'SkRegion_intersects_2' > < / a >
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_intersects' > intersects< / a > (const < a href = '#SkRegion' > SkRegion< / a > & other) const
< / pre >
Returns true if < a href = '#Region' > Region< / a > intersects < a href = '#SkRegion_intersects_2_other' > other< / a > .
Returns false if either < a href = '#SkRegion_intersects_2_other' > other< / a > or < a href = '#Region' > Region< / a > is empty, or do not intersect.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_intersects_2_other' > < code > < strong > other< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > to intersect< / td >
< / tr >
< / table >
### Return Value
true if < a href = '#SkRegion_intersects_2_other' > other< / a > and < a href = '#Region' > Region< / a > have area in common
### Example
< div > < fiddle-embed name = "4263d79ac0e7df02e90948fdde9fa965" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_contains' > contains< / a > < sup > < a href = '#SkRegion_contains_2' > [2]< / a > < / sup > < sup > < a href = '#SkRegion_contains_3' > [3]< / a > < / sup > < a href = 'SkRect_Reference#SkRect_intersects' > SkRect::intersects< / a > < sup > < a href = 'SkRect_Reference#SkRect_intersects_2' > [2]< / a > < / sup >
---
< a name = 'SkRegion_contains' > < / a >
## contains
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_contains' > contains< / a > (int32_t x, int32_t y) const
< / pre >
Returns true if < a href = 'SkIPoint_Reference#IPoint' > IPoint< / a > (< a href = '#SkRegion_contains_x' > x< / a > , < a href = '#SkRegion_contains_y' > y< / a > ) is inside < a href = '#Region' > Region< / a > .
Returns false if < a href = '#Region' > Region< / a > is empty.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_contains_x' > < code > < strong > x< / strong > < / code > < / a > < / td >
< td > test < a href = 'SkIPoint_Reference#IPoint' > IPoint< / a > < a href = '#SkRegion_contains_x' > x< / a > -coordinate< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_contains_y' > < code > < strong > y< / strong > < / code > < / a > < / td >
< td > test < a href = 'SkIPoint_Reference#IPoint' > IPoint< / a > < a href = '#SkRegion_contains_y' > y< / a > -coordinate< / td >
< / tr >
< / table >
### Return Value
true if (< a href = '#SkRegion_contains_x' > x< / a > , < a href = '#SkRegion_contains_y' > y< / a > ) is inside < a href = '#Region' > Region< / a >
### Example
< div > < fiddle-embed name = "e3899c2715c332bfc7648d5f2b9eefc6" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_intersects' > intersects< / a > < sup > < a href = '#SkRegion_intersects_2' > [2]< / a > < / sup > < a href = 'SkRect_Reference#SkRect_contains' > SkRect::contains< / a > < sup > < a href = 'SkRect_Reference#SkRect_contains_2' > [2]< / a > < / sup > < sup > < a href = 'SkRect_Reference#SkRect_contains_3' > [3]< / a > < / sup >
---
< a name = 'SkRegion_contains_2' > < / a >
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_contains' > contains< / a > (const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & other) const
< / pre >
Returns true if < a href = '#SkRegion_contains_2_other' > other< / a > is completely inside < a href = '#Region' > Region< / a > .
Returns false if < a href = '#Region' > Region< / a > or < a href = '#SkRegion_contains_2_other' > other< / a > is empty.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_contains_2_other' > < code > < strong > other< / strong > < / code > < / a > < / td >
< td > < a href = 'SkIRect_Reference#IRect' > IRect< / a > to contain< / td >
< / tr >
< / table >
### Return Value
true if < a href = '#SkRegion_contains_2_other' > other< / a > is inside < a href = '#Region' > Region< / a >
### Example
< div > < fiddle-embed name = "100b4cbd5dd7406804e40035833a433c" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_intersects' > intersects< / a > < sup > < a href = '#SkRegion_intersects_2' > [2]< / a > < / sup > < a href = 'SkRect_Reference#SkRect_contains' > SkRect::contains< / a > < sup > < a href = 'SkRect_Reference#SkRect_contains_2' > [2]< / a > < / sup > < sup > < a href = 'SkRect_Reference#SkRect_contains_3' > [3]< / a > < / sup >
---
< a name = 'SkRegion_contains_3' > < / a >
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_contains' > contains< / a > (const < a href = '#SkRegion' > SkRegion< / a > & other) const
< / pre >
Returns true if < a href = '#SkRegion_contains_3_other' > other< / a > is completely inside < a href = '#Region' > Region< / a > .
Returns false if < a href = '#Region' > Region< / a > or < a href = '#SkRegion_contains_3_other' > other< / a > is empty.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_contains_3_other' > < code > < strong > other< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > to contain< / td >
< / tr >
< / table >
### Return Value
true if < a href = '#SkRegion_contains_3_other' > other< / a > is inside < a href = '#Region' > Region< / a >
### Example
< div > < fiddle-embed name = "46de22da2f3e08a8d7f064634fc1c7b5" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_intersects' > intersects< / a > < sup > < a href = '#SkRegion_intersects_2' > [2]< / a > < / sup > < a href = 'SkRect_Reference#SkRect_contains' > SkRect::contains< / a > < sup > < a href = 'SkRect_Reference#SkRect_contains_2' > [2]< / a > < / sup > < sup > < a href = 'SkRect_Reference#SkRect_contains_3' > [3]< / a > < / sup >
---
< a name = 'SkRegion_quickContains' > < / a >
## quickContains
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_quickContains' > quickContains< / a > (const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & r) const
< / pre >
Returns true if < a href = '#Region' > Region< / a > is a single rectangle and contains < a href = '#SkRegion_quickContains_r' > r< / a > .
May return false even though < a href = '#Region' > Region< / a > contains < a href = '#SkRegion_quickContains_r' > r< / a > .
### Parameters
< table > < tr > < td > < a name = 'SkRegion_quickContains_r' > < code > < strong > r< / strong > < / code > < / a > < / td >
< td > < a href = 'SkIRect_Reference#IRect' > IRect< / a > to contain< / td >
< / tr >
< / table >
### Return Value
true quickly if < a href = '#SkRegion_quickContains_r' > r< / a > points are equal or inside
### Example
< div > < fiddle-embed name = "d8e5eac373e2e7cfc1b8cd0229647ba6" >
#### Example Output
~~~~
quickContains 1: true
quickContains 2: true
quickContains 3: false
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_contains' > contains< / a > < sup > < a href = '#SkRegion_contains_2' > [2]< / a > < / sup > < sup > < a href = '#SkRegion_contains_3' > [3]< / a > < / sup > < a href = '#SkRegion_quickReject' > quickReject< / a > < sup > < a href = '#SkRegion_quickReject_2' > [2]< / a > < / sup > < a href = '#SkRegion_intersects' > intersects< / a > < sup > < a href = '#SkRegion_intersects_2' > [2]< / a > < / sup >
---
< a name = 'SkRegion_quickContains_2' > < / a >
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_quickContains' > quickContains< / a > (int32_t left, int32_t top, int32_t right, int32_t bottom) const
< / pre >
Returns true if < a href = '#Region' > Region< / a > is a single rectangle and contains < a href = 'SkIRect_Reference#IRect' > IRect< / a >
(< a href = '#SkRegion_quickContains_2_left' > left< / a > , < a href = '#SkRegion_quickContains_2_top' > top< / a > , < a href = '#SkRegion_quickContains_2_right' > right< / a > , < a href = '#SkRegion_quickContains_2_bottom' > bottom< / a > ).
Returns false if < a href = '#Region' > Region< / a > is empty or < a href = 'SkIRect_Reference#IRect' > IRect< / a > (< a href = '#SkRegion_quickContains_2_left' > left< / a > , < a href = '#SkRegion_quickContains_2_top' > top< / a > , < a href = '#SkRegion_quickContains_2_right' > right< / a > , < a href = '#SkRegion_quickContains_2_bottom' > bottom< / a > ) is empty.
May return false even though < a href = '#Region' > Region< / a > contains (< a href = '#SkRegion_quickContains_2_left' > left< / a > , < a href = '#SkRegion_quickContains_2_top' > top< / a > , < a href = '#SkRegion_quickContains_2_right' > right< / a > , < a href = '#SkRegion_quickContains_2_bottom' > bottom< / a > ).
### Parameters
< table > < tr > < td > < a name = 'SkRegion_quickContains_2_left' > < code > < strong > left< / strong > < / code > < / a > < / td >
< td > edge of bounds on x-axis< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_quickContains_2_top' > < code > < strong > top< / strong > < / code > < / a > < / td >
< td > edge of bounds on y-axis< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_quickContains_2_right' > < code > < strong > right< / strong > < / code > < / a > < / td >
< td > edge of bounds on x-axis< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_quickContains_2_bottom' > < code > < strong > bottom< / strong > < / code > < / a > < / td >
< td > edge of bounds on y-axis< / td >
< / tr >
< / table >
### Return Value
true quickly if < a href = 'SkIRect_Reference#IRect' > IRect< / a > are equal or inside
### Example
< div > < fiddle-embed name = "eb6d290887e1a3a0b051b4d7b012f5e1" >
#### Example Output
~~~~
quickContains 1: true
quickContains 2: true
quickContains 3: false
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_contains' > contains< / a > < sup > < a href = '#SkRegion_contains_2' > [2]< / a > < / sup > < sup > < a href = '#SkRegion_contains_3' > [3]< / a > < / sup > < a href = '#SkRegion_quickReject' > quickReject< / a > < sup > < a href = '#SkRegion_quickReject_2' > [2]< / a > < / sup > < a href = '#SkRegion_intersects' > intersects< / a > < sup > < a href = '#SkRegion_intersects_2' > [2]< / a > < / sup >
---
< a name = 'SkRegion_quickReject' > < / a >
## quickReject
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_quickReject' > quickReject< / a > (const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & rect) const
< / pre >
Returns true if < a href = '#Region' > Region< / a > does not intersect < a href = '#SkRegion_quickReject_rect' > rect< / a > .
Returns true if < a href = '#SkRegion_quickReject_rect' > rect< / a > is empty or < a href = '#Region' > Region< / a > is empty.
May return false even though < a href = '#Region' > Region< / a > does not intersect < a href = '#SkRegion_quickReject_rect' > rect< / a > .
### Parameters
< table > < tr > < td > < a name = 'SkRegion_quickReject_rect' > < code > < strong > rect< / strong > < / code > < / a > < / td >
< td > < a href = 'SkIRect_Reference#IRect' > IRect< / a > to intersect< / td >
< / tr >
< / table >
### Return Value
true if < a href = '#SkRegion_quickReject_rect' > rect< / a > does not intersect
### Example
< div > < fiddle-embed name = "71ac24b7d91ac5ca7c14b43930d5f85d" >
#### Example Output
~~~~
quickReject 1: true
quickReject 2: true
quickReject 3: false
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_quickContains' > quickContains< / a > < sup > < a href = '#SkRegion_quickContains_2' > [2]< / a > < / sup > < a href = '#SkRegion_contains' > contains< / a > < sup > < a href = '#SkRegion_contains_2' > [2]< / a > < / sup > < sup > < a href = '#SkRegion_contains_3' > [3]< / a > < / sup > < a href = '#SkRegion_intersects' > intersects< / a > < sup > < a href = '#SkRegion_intersects_2' > [2]< / a > < / sup >
---
< a name = 'SkRegion_quickReject_2' > < / a >
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_quickReject' > quickReject< / a > (const < a href = '#SkRegion' > SkRegion< / a > & rgn) const
< / pre >
Returns true if < a href = '#Region' > Region< / a > does not intersect < a href = '#SkRegion_quickReject_2_rgn' > rgn< / a > .
Returns true if < a href = '#SkRegion_quickReject_2_rgn' > rgn< / a > is empty or < a href = '#Region' > Region< / a > is empty.
May return false even though < a href = '#Region' > Region< / a > does not intersect < a href = '#SkRegion_quickReject_2_rgn' > rgn< / a > .
### Parameters
< table > < tr > < td > < a name = 'SkRegion_quickReject_2_rgn' > < code > < strong > rgn< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > to intersect< / td >
< / tr >
< / table >
### Return Value
true if < a href = '#SkRegion_quickReject_2_rgn' > rgn< / a > does not intersect
### Example
< div > < fiddle-embed name = "def7dba38947c33b203e4f9db6c88be3" >
#### Example Output
~~~~
quickReject 1: true
quickReject 2: true
quickReject 3: false
~~~~
< / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_quickContains' > quickContains< / a > < sup > < a href = '#SkRegion_quickContains_2' > [2]< / a > < / sup > < a href = '#SkRegion_contains' > contains< / a > < sup > < a href = '#SkRegion_contains_2' > [2]< / a > < / sup > < sup > < a href = '#SkRegion_contains_3' > [3]< / a > < / sup > < a href = '#SkRegion_intersects' > intersects< / a > < sup > < a href = '#SkRegion_intersects_2' > [2]< / a > < / sup >
---
< a name = 'SkRegion_translate' > < / a >
## translate
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
void < a href = '#SkRegion_translate' > translate< / a > (int dx, int dy)
< / pre >
Offsets < a href = '#Region' > Region< / a > by < a href = 'SkIPoint_Reference#IVector' > IVector< / a > (< a href = '#SkRegion_translate_dx' > dx< / a > , < a href = '#SkRegion_translate_dy' > dy< / a > ). Has no effect if < a href = '#Region' > Region< / a > is empty.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_translate_dx' > < code > < strong > dx< / strong > < / code > < / a > < / td >
< td > x-axis offset< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_translate_dy' > < code > < strong > dy< / strong > < / code > < / a > < / td >
< td > y-axis offset< / td >
< / tr >
< / table >
### Example
< div > < fiddle-embed name = "4e5b9e53aa1b200fed3ee6596ca01f0e" > < / fiddle-embed > < / div >
### See Also
< a href = 'SkCanvas_Reference#SkCanvas_translate' > SkCanvas::translate< / a > < a href = 'SkIRect_Reference#SkIRect_offset' > SkIRect::offset< / a > < sup > < a href = 'SkIRect_Reference#SkIRect_offset_2' > [2]< / a > < / sup > < a href = 'SkPath_Reference#SkPath_offset' > SkPath::offset< / a > < sup > < a href = 'SkPath_Reference#SkPath_offset_2' > [2]< / a > < / sup >
---
< a name = 'SkRegion_translate_2' > < / a >
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
void < a href = '#SkRegion_translate' > translate< / a > (int dx, int dy, < a href = '#SkRegion' > SkRegion< / a > * dst) const
< / pre >
Offsets < a href = '#Region' > Region< / a > by < a href = 'SkIPoint_Reference#IVector' > IVector< / a > (< a href = '#SkRegion_translate_2_dx' > dx< / a > , < a href = '#SkRegion_translate_2_dy' > dy< / a > ), writing result to < a href = '#SkRegion_translate_2_dst' > dst< / a > . < a href = '#Region' > Region< / a > may be passed
as < a href = '#SkRegion_translate_2_dst' > dst< / a > parameter, translating < a href = '#Region' > Region< / a > in place. Has no effect if < a href = '#SkRegion_translate_2_dst' > dst< / a > is nullptr.
If < a href = '#Region' > Region< / a > is empty, sets < a href = '#SkRegion_translate_2_dst' > dst< / a > to empty.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_translate_2_dx' > < code > < strong > dx< / strong > < / code > < / a > < / td >
< td > x-axis offset< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_translate_2_dy' > < code > < strong > dy< / strong > < / code > < / a > < / td >
< td > y-axis offset< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_translate_2_dst' > < code > < strong > dst< / strong > < / code > < / a > < / td >
< td > translated result< / td >
< / tr >
< / table >
### Example
< div > < fiddle-embed name = "024200960eb52fee1f471514607e6001" > < / fiddle-embed > < / div >
### See Also
< a href = 'SkCanvas_Reference#SkCanvas_translate' > SkCanvas::translate< / a > < a href = 'SkIRect_Reference#SkIRect_offset' > SkIRect::offset< / a > < sup > < a href = 'SkIRect_Reference#SkIRect_offset_2' > [2]< / a > < / sup > < a href = 'SkPath_Reference#SkPath_offset' > SkPath::offset< / a > < sup > < a href = 'SkPath_Reference#SkPath_offset_2' > [2]< / a > < / sup >
---
## <a name='SkRegion_Op'>Enum SkRegion::Op</a>
< pre style = "padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0 " >
enum < a href = 'undocumented#Op' > Op< / a > {
< a href = '#SkRegion_kDifference_Op' > kDifference Op< / a > ,
< a href = '#SkRegion_kIntersect_Op' > kIntersect Op< / a > ,
< a href = '#SkRegion_kUnion_Op' > kUnion Op< / a > ,
< a href = '#SkRegion_kXOR_Op' > kXOR Op< / a > ,
< a href = '#SkRegion_kReverseDifference_Op' > kReverseDifference Op< / a > ,
< a href = '#SkRegion_kReplace_Op' > kReplace Op< / a > ,
< a href = '#SkRegion_kLastOp' > kLastOp< / a > = < a href = '#SkRegion_kReplace_Op' > kReplace Op< / a > ,
};
< / pre >
The logical operations that can be performed when combining two < a href = '#Region' > Regions< / 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 = 'SkRegion_kDifference_Op' >< code > SkRegion::kDifference_Op</ 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; ' >
Subtracts operand < a href = '#Region' > Region< / a > from target < a href = '#Region' > Region< / a > .
< / td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a name = 'SkRegion_kIntersect_Op' >< code > SkRegion::kIntersect_Op</ 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; ' >
Intersects operand < a href = '#Region' > Region< / a > and target < a href = '#Region' > Region< / a > .
< / td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a name = 'SkRegion_kUnion_Op' >< code > SkRegion::kUnion_Op</ 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; ' >
Unions operand < a href = '#Region' > Region< / a > and target < a href = '#Region' > Region< / a > .
< / td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a name = 'SkRegion_kXOR_Op' >< code > SkRegion::kXOR_Op</ 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; ' >
Replaces target < a href = '#Region' > Region< / a > with area exclusive to both < a href = '#Region' > Regions< / a > .
< / td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a name = 'SkRegion_kReverseDifference_Op' >< code > SkRegion::kReverseDifference_Op</ 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; ' >
Subtracts target < a href = '#Region' > Region< / a > from operand < a href = '#Region' > Region< / a > .
< / td >
< / tr >
< tr >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a name = 'SkRegion_kReplace_Op' >< code > SkRegion::kReplace_Op</ 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; ' >
Replaces target < a href = '#Region' > Region< / a > with operand < a href = '#Region' > Region< / a > .
< / td >
< / tr >
< tr style = 'background-color: #f0f0f0 ; ' >
< td style = 'text-align: left; border: 2px solid #dddddd ; padding: 8px; ' >< a name = 'SkRegion_kLastOp' >< code > SkRegion::kLastOp</ 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; ' >
last operator< / td >
< / tr >
< / table >
### Example
< div > < fiddle-embed name = "fb82d2d3ec51912215a0eb9b45dcbc3c" > < / fiddle-embed > < / div >
### See Also
< a href = 'undocumented#SkPathOp' > SkPathOp< / 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 = 'SkRegion_kOpCnt' >< code > SkRegion::kOpCnt</ 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; ' >
May be used to verify that < a href = 'undocumented#Op' > Op< / a > is a legal value.< / td >
< / tr >
< / table >
< a name = 'SkRegion_op' > < / a >
## op
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_op' > op< / a > (const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & rect, < a href = 'undocumented#Op' > Op< / a > op)
< / pre >
Replaces < a href = '#Region' > Region< / a > with the result of < a href = '#Region' > Region< / a > op < a href = '#SkRegion_op_rect' > rect< / a > .
Returns true if replaced < a href = '#Region' > Region< / a > is not empty.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_op_rect' > < code > < strong > rect< / strong > < / code > < / a > < / td >
< td > < a href = 'SkIRect_Reference#IRect' > IRect< / a > operand< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_op_op' > < code > < strong > op< / strong > < / code > < / a > < / td >
< td > operator, one of: < a href = '#SkRegion_kDifference_Op' > kDifference Op< / a > , < a href = '#SkRegion_kIntersect_Op' > kIntersect Op< / a > , < a href = '#SkRegion_kUnion_Op' > kUnion Op< / a > , < a href = '#SkRegion_kXOR_Op' > kXOR Op< / a > , < a href = '#SkRegion_kReverseDifference_Op' > kReverseDifference Op< / a > ,
< a href = '#SkRegion_kReplace_Op' > kReplace Op< / a > < / td >
< / tr >
< / table >
### Return Value
false if result is empty
### Example
< div > < fiddle-embed name = "1790b2e054c536a54601138365700ac3" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_setRects' > setRects< / a > < a href = 'undocumented#Op' > Op< / a >
---
< a name = 'SkRegion_op_2' > < / a >
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_op' > op< / a > (int left, int top, int right, int bottom, < a href = 'undocumented#Op' > Op< / a > op)
< / pre >
Replaces < a href = '#Region' > Region< / a > with the result of < a href = '#Region' > Region< / a > op < a href = 'SkIRect_Reference#IRect' > IRect< / a > (< a href = '#SkRegion_op_2_left' > left< / a > , < a href = '#SkRegion_op_2_top' > top< / a > , < a href = '#SkRegion_op_2_right' > right< / a > , < a href = '#SkRegion_op_2_bottom' > bottom< / a > ).
Returns true if replaced < a href = '#Region' > Region< / a > is not empty.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_op_2_left' > < code > < strong > left< / strong > < / code > < / a > < / td >
< td > edge of bounds on x-axis< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_op_2_top' > < code > < strong > top< / strong > < / code > < / a > < / td >
< td > edge of bounds on y-axis< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_op_2_right' > < code > < strong > right< / strong > < / code > < / a > < / td >
< td > edge of bounds on x-axis< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_op_2_bottom' > < code > < strong > bottom< / strong > < / code > < / a > < / td >
< td > edge of bounds on y-axis< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_op_2_op' > < code > < strong > op< / strong > < / code > < / a > < / td >
< td > operator, one of: < a href = '#SkRegion_kDifference_Op' > kDifference Op< / a > , < a href = '#SkRegion_kIntersect_Op' > kIntersect Op< / a > , < a href = '#SkRegion_kUnion_Op' > kUnion Op< / a > , < a href = '#SkRegion_kXOR_Op' > kXOR Op< / a > , < a href = '#SkRegion_kReverseDifference_Op' > kReverseDifference Op< / a > ,
< a href = '#SkRegion_kReplace_Op' > kReplace Op< / a > < / td >
< / tr >
< / table >
### Return Value
false if result is empty
### Example
< div > < fiddle-embed name = "2e3497890d523235f96680716c321098" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_setRects' > setRects< / a > < a href = 'undocumented#Op' > Op< / a >
---
< a name = 'SkRegion_op_3' > < / a >
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_op' > op< / a > (const < a href = '#SkRegion' > SkRegion< / a > & rgn, < a href = 'undocumented#Op' > Op< / a > op)
< / pre >
Replaces < a href = '#Region' > Region< / a > with the result of < a href = '#Region' > Region< / a > op < a href = '#SkRegion_op_3_rgn' > rgn< / a > .
Returns true if replaced < a href = '#Region' > Region< / a > is not empty.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_op_3_rgn' > < code > < strong > rgn< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > operand< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_op_3_op' > < code > < strong > op< / strong > < / code > < / a > < / td >
< td > operator, one of: < a href = '#SkRegion_kDifference_Op' > kDifference Op< / a > , < a href = '#SkRegion_kIntersect_Op' > kIntersect Op< / a > , < a href = '#SkRegion_kUnion_Op' > kUnion Op< / a > , < a href = '#SkRegion_kXOR_Op' > kXOR Op< / a > , < a href = '#SkRegion_kReverseDifference_Op' > kReverseDifference Op< / a > ,
< a href = '#SkRegion_kReplace_Op' > kReplace Op< / a > < / td >
< / tr >
< / table >
### Return Value
false if result is empty
### Example
< div > < fiddle-embed name = "65f4eccea3514ed7e37b5067e15efddb" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_setRects' > setRects< / a > < a href = 'undocumented#Op' > Op< / a >
---
< a name = 'SkRegion_op_4' > < / a >
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_op' > op< / a > (const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & rect, const < a href = '#SkRegion' > SkRegion< / a > & rgn, < a href = 'undocumented#Op' > Op< / a > op)
< / pre >
Replaces < a href = '#Region' > Region< / a > with the result of < a href = '#SkRegion_op_4_rect' > rect< / a > op < a href = '#SkRegion_op_4_rgn' > rgn< / a > .
Returns true if replaced < a href = '#Region' > Region< / a > is not empty.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_op_4_rect' > < code > < strong > rect< / strong > < / code > < / a > < / td >
< td > < a href = 'SkIRect_Reference#IRect' > IRect< / a > operand< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_op_4_rgn' > < code > < strong > rgn< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > operand< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_op_4_op' > < code > < strong > op< / strong > < / code > < / a > < / td >
< td > operator, one of: < a href = '#SkRegion_kDifference_Op' > kDifference Op< / a > , < a href = '#SkRegion_kIntersect_Op' > kIntersect Op< / a > , < a href = '#SkRegion_kUnion_Op' > kUnion Op< / a > , < a href = '#SkRegion_kXOR_Op' > kXOR Op< / a > , < a href = '#SkRegion_kReverseDifference_Op' > kReverseDifference Op< / a > ,
< a href = '#SkRegion_kReplace_Op' > kReplace Op< / a > < / td >
< / tr >
< / table >
### Return Value
false if result is empty
### Example
< div > < fiddle-embed name = "3f964be1e1fd2fbb977b655d3a928f0a" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_setRects' > setRects< / a > < a href = 'undocumented#Op' > Op< / a >
---
< a name = 'SkRegion_op_5' > < / a >
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_op' > op< / a > (const < a href = '#SkRegion' > SkRegion< / a > & rgn, const < a href = 'SkIRect_Reference#SkIRect' > SkIRect< / a > & rect, < a href = 'undocumented#Op' > Op< / a > op)
< / pre >
Replaces < a href = '#Region' > Region< / a > with the result of < a href = '#SkRegion_op_5_rgn' > rgn< / a > op < a href = '#SkRegion_op_5_rect' > rect< / a > .
Returns true if replaced < a href = '#Region' > Region< / a > is not empty.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_op_5_rgn' > < code > < strong > rgn< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > operand< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_op_5_rect' > < code > < strong > rect< / strong > < / code > < / a > < / td >
< td > < a href = 'SkIRect_Reference#IRect' > IRect< / a > operand< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_op_5_op' > < code > < strong > op< / strong > < / code > < / a > < / td >
< td > operator, one of: < a href = '#SkRegion_kDifference_Op' > kDifference Op< / a > , < a href = '#SkRegion_kIntersect_Op' > kIntersect Op< / a > , < a href = '#SkRegion_kUnion_Op' > kUnion Op< / a > , < a href = '#SkRegion_kXOR_Op' > kXOR Op< / a > , < a href = '#SkRegion_kReverseDifference_Op' > kReverseDifference Op< / a > ,
< a href = '#SkRegion_kReplace_Op' > kReplace Op< / a > < / td >
< / tr >
< / table >
### Return Value
false if result is empty
### Example
< div > < fiddle-embed name = "e623208dd44f0b24499ac5f1593d1b39" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_setRects' > setRects< / a > < a href = 'undocumented#Op' > Op< / a >
---
< a name = 'SkRegion_op_6' > < / a >
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
bool < a href = '#SkRegion_op' > op< / a > (const < a href = '#SkRegion' > SkRegion< / a > & rgna, const < a href = '#SkRegion' > SkRegion< / a > & rgnb, < a href = 'undocumented#Op' > Op< / a > op)
< / pre >
Replaces < a href = '#Region' > Region< / a > with the result of < a href = '#SkRegion_op_6_rgna' > rgna< / a > op < a href = '#SkRegion_op_6_rgnb' > rgnb< / a > .
Returns true if replaced < a href = '#Region' > Region< / a > is not empty.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_op_6_rgna' > < code > < strong > rgna< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > operand< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_op_6_rgnb' > < code > < strong > rgnb< / strong > < / code > < / a > < / td >
< td > < a href = '#Region' > Region< / a > operand< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_op_6_op' > < code > < strong > op< / strong > < / code > < / a > < / td >
< td > operator, one of: < a href = '#SkRegion_kDifference_Op' > kDifference Op< / a > , < a href = '#SkRegion_kIntersect_Op' > kIntersect Op< / a > , < a href = '#SkRegion_kUnion_Op' > kUnion Op< / a > , < a href = '#SkRegion_kXOR_Op' > kXOR Op< / a > , < a href = '#SkRegion_kReverseDifference_Op' > kReverseDifference Op< / a > ,
< a href = '#SkRegion_kReplace_Op' > kReplace Op< / a > < / td >
< / tr >
< / table >
### Return Value
false if result is empty
### Example
< div > < fiddle-embed name = "13de1a6fcb2302a2a30278cb88d3e17d" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_setRects' > setRects< / a > < a href = 'undocumented#Op' > Op< / a >
---
< a name = 'SkRegion_toString' > < / a >
## toString
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
char* < a href = '#SkRegion_toString' > toString< / a > ()
< / pre >
### Return Value
string representation of < a href = '#Region' > Region< / a >
---
< a name = 'SkRegion_writeToMemory' > < / a >
## writeToMemory
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
size_t < a href = '#SkRegion_writeToMemory' > writeToMemory< / a > (void* buffer) const
< / pre >
Writes < a href = '#Region' > Region< / a > to < a href = '#SkRegion_writeToMemory_buffer' > buffer< / a > , and returns number of bytes written.
If < a href = '#SkRegion_writeToMemory_buffer' > buffer< / a > is nullptr, returns number number of bytes that would be written.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_writeToMemory_buffer' > < code > < strong > buffer< / strong > < / code > < / a > < / td >
< td > storage for binary data< / td >
< / tr >
< / table >
### Return Value
size of < a href = '#Region' > Region< / a >
### Example
< div > < fiddle-embed name = "1419d2a8c22c355ab46240865d056ee5" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_readFromMemory' > readFromMemory< / a >
---
< a name = 'SkRegion_readFromMemory' > < / a >
## readFromMemory
< pre style = "padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0 " >
size_t < a href = '#SkRegion_readFromMemory' > readFromMemory< / a > (const void* buffer, size_t length)
< / pre >
Constructs < a href = '#Region' > Region< / a > from < a href = '#SkRegion_readFromMemory_buffer' > buffer< / a > of size < a href = '#SkRegion_readFromMemory_length' > length< / a > . Returns bytes read.
Returned value will be multiple of four or zero if < a href = '#SkRegion_readFromMemory_length' > length< / a > was too small.
### Parameters
< table > < tr > < td > < a name = 'SkRegion_readFromMemory_buffer' > < code > < strong > buffer< / strong > < / code > < / a > < / td >
< td > storage for binary data< / td >
< / tr >
< tr > < td > < a name = 'SkRegion_readFromMemory_length' > < code > < strong > length< / strong > < / code > < / a > < / td >
< td > size of < a href = '#SkRegion_readFromMemory_buffer' > buffer< / a > < / td >
< / tr >
< / table >
### Return Value
bytes read
### Example
< div > < fiddle-embed name = "1ede346c430ef23df0eaaf0773dd6a15" > < / fiddle-embed > < / div >
### See Also
< a href = '#SkRegion_writeToMemory' > writeToMemory< / a >
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