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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CC_QUADS_DRAW_POLYGON_H_ |
| 6 #define CC_QUADS_DRAW_POLYGON_H_ |
| 7 |
| 8 #include <vector> |
| 9 |
| 10 #include "cc/base/math_util.h" |
| 11 #include "cc/output/bsp_compare_result.h" |
| 12 #include "cc/quads/draw_quad.h" |
| 13 #include "ui/gfx/point3_f.h" |
| 14 #include "ui/gfx/quad_f.h" |
| 15 #include "ui/gfx/vector3d_f.h" |
| 16 |
| 17 namespace cc { |
| 18 |
| 19 class DrawPolygon { |
| 20 public: |
| 21 DrawPolygon(); |
| 22 ~DrawPolygon(); |
| 23 |
| 24 DrawPolygon(DrawQuad* original_ref, |
| 25 gfx::Point3F* in_points, |
| 26 int num_vertices_in_polygon, |
| 27 int draw_order_index = 0); |
| 28 DrawPolygon(const DrawPolygon& other); |
| 29 |
| 30 DrawPolygon& operator=(const DrawPolygon& rhs); |
| 31 |
| 32 bool Split(const DrawPolygon& splitter, |
| 33 double plane_threshold, |
| 34 scoped_ptr<DrawPolygon>* front, |
| 35 scoped_ptr<DrawPolygon>* back); |
| 36 float SignedPointDistance(const gfx::Point3F& point) const; |
| 37 bool ApplyTransform(const gfx::Transform& transform); |
| 38 |
| 39 std::vector<gfx::Point3F> points; |
| 40 gfx::Vector3dF normal; |
| 41 float area; |
| 42 int order_index; |
| 43 |
| 44 // Checks polygon a against polygon b and returns which side it lies on, or |
| 45 // whether it crosses (necessitating a split in the BSP tree). |
| 46 static BspCompareResult SideCompare(const DrawPolygon& a, |
| 47 const DrawPolygon& b, |
| 48 float z_threshold); |
| 49 void ToQuads2D(std::vector<gfx::QuadF>* quads) const; |
| 50 int NumPoints() { return points.size(); } |
| 51 bool GetInverseTransform(gfx::Transform* transform) const; |
| 52 |
| 53 // The pointer to the original quad, which gives us all the drawing info |
| 54 // we need. |
| 55 DrawQuad* original_ref; |
| 56 |
| 57 static float compare_threshold; |
| 58 static float split_threshold; |
| 59 |
| 60 private: |
| 61 void CopyFrom(const DrawPolygon& rhs); |
| 62 }; |
| 63 |
| 64 } // namespace cc |
| 65 |
| 66 #endif // CC_QUADS_DRAW_POLYGON_H_ |
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