ethannicholas | e9709e8 | 2016-01-07 13:34:16 -0800 | [diff] [blame^] | 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 point to the resultant |
| 30 | // vertex array. CALLER IS RESPONSIBLE for deleting this buffer to avoid a memory leak! |
| 31 | int PathToVertices(const SkPath& path, SkScalar tolerance, const SkRect& clipBounds, |
| 32 | WindingVertex** verts); |
| 33 | |
| 34 | int PathToTriangles(const SkPath& path, SkScalar tolerance, const SkRect& clipBounds, |
| 35 | GrResourceProvider* resourceProvider, |
| 36 | SkAutoTUnref<GrVertexBuffer>& vertexBuffer, bool canMapVB, bool* isLinear); |
| 37 | |
| 38 | } |
| 39 | |
| 40 | #endif |