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1 /* | |
2 * Copyright 2015 Google Inc. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license that can be | |
5 * found in the LICENSE file. | |
6 */ | |
7 | |
8 #ifndef GrTessellator_DEFINED | |
9 #define GrTessellator_DEFINED | |
10 | |
11 #include "SkPath.h" | |
12 #include "GrResourceProvider.h" | |
13 | |
14 /** | |
15 * Provides utility functions for converting paths to a collection of triangles. | |
16 */ | |
17 | |
18 #define TESSELLATOR_WIREFRAME 0 | |
19 | |
20 namespace GrTessellator { | |
21 | |
22 struct WindingVertex { | |
23 SkPoint fPos; | |
24 int fWinding; | |
25 }; | |
26 | |
27 // Triangulates a path to an array of vertices. Each triangle is represented as
a set of three | |
28 // WindingVertex entries, each of which contains the position and winding count
(which is the same | |
29 // for all three vertices of a triangle). The 'verts' out parameter is set to po
int to the resultant | |
30 // vertex array. CALLER IS RESPONSIBLE for deleting this buffer to avoid a memor
y leak! | |
31 int PathToVertices(const SkPath& path, SkScalar tolerance, const SkRect& clipBou
nds, | |
32 WindingVertex** verts); | |
33 | |
34 int PathToTriangles(const SkPath& path, SkScalar tolerance, const SkRect& clipBo
unds, | |
35 GrResourceProvider* resourceProvider, | |
36 SkAutoTUnref<GrVertexBuffer>& vertexBuffer, bool canMapVB, b
ool* isLinear); | |
37 | |
38 } | |
39 | |
40 #endif | |
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