70149060a7
git-svn-id: http://skia.googlecode.com/svn/trunk@427 2bbb7eff-a529-9590-31e7-b0007b416f81
30 lines
851 B
C++
30 lines
851 B
C++
#ifndef SkLineClipper_DEFINED
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#define SkLineClipper_DEFINED
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#include "SkRect.h"
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#include "SkPoint.h"
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class SkLineClipper {
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public:
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enum {
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kMaxPoints = 4
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};
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/* Clip the line pts[0]...pts[1] against clip, ignoring segments that
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lie completely above or below the clip. For portions to the left or
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right, turn those into vertical line segments that are aligned to the
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edge of the clip.
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Return the number of line segments that result, and store the end-points
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of those segments sequentially in lines as follows:
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1st segment: lines[0]..lines[1]
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2nd segment: lines[1]..lines[2]
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3rd segment: lines[2]..lines[3]
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*/
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static int ClipLine(const SkPoint pts[2], const SkRect& clip,
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SkPoint lines[kMaxPoints]);
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};
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#endif
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