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Side by Side Diff: cc/quads/draw_polygon.h

Issue 384083002: WIP BSP Tree for 3D Layer Sorting (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 6 years, 5 months ago
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1 // Copyright 2013 The Chromium Authors. All rights reserved.
Ian Vollick 2014/07/22 16:12:15 2014. Here and elsewhere.
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 private:
58 void CopyFrom(const DrawPolygon& rhs);
59 };
60
61 } // namespace cc
62
63 #endif // CC_QUADS_DRAW_POLYGON_H_
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