mirror of https://github.com/axmolengine/axmol.git
39 lines
1.5 KiB
C
39 lines
1.5 KiB
C
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SkConcaveToTriangles_DEFINED
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#define SkConcaveToTriangles_DEFINED
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#include "SkPoint.h"
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#include "SkTDArray.h"
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// Triangulate a polygon.
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// The polygon can be convex or concave, and can have holes or multiple contours
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// of arbitrary recursion.
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// The holes must have opposite orientation of the outer contours, whereas
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// islands within the holes must have the same orientation as the outer contour.
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// Contours should be joined by zero-thickness double-edges, to mimic a single
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// polygon. The polygon should not be self-intersecting.
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// Currently, the outer contour must be right-handed, i.e. it should be oriented
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// in the direction that rotates the X-axis to the Y-axis.
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bool SkConcaveToTriangles(size_t count,
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const SkPoint pts[],
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SkTDArray<SkPoint> *triangles);
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#endif // SkConcaveToTriangles_DEFINED
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