Box2D  2.4.1
A 2D physics engine for games
b2_draw.h
1 // MIT License
2 
3 // Copyright (c) 2019 Erin Catto
4 
5 // Permission is hereby granted, free of charge, to any person obtaining a copy
6 // of this software and associated documentation files (the "Software"), to deal
7 // in the Software without restriction, including without limitation the rights
8 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 // copies of the Software, and to permit persons to whom the Software is
10 // furnished to do so, subject to the following conditions:
11 
12 // The above copyright notice and this permission notice shall be included in all
13 // copies or substantial portions of the Software.
14 
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 // SOFTWARE.
22 
23 #ifndef B2_DRAW_H
24 #define B2_DRAW_H
25 
26 #include "b2_api.h"
27 #include "b2_math.h"
28 
30 struct B2_API b2Color
31 {
32  b2Color() {}
33  b2Color(float rIn, float gIn, float bIn, float aIn = 1.0f)
34  {
35  r = rIn; g = gIn; b = bIn; a = aIn;
36  }
37 
38  void Set(float rIn, float gIn, float bIn, float aIn = 1.0f)
39  {
40  r = rIn; g = gIn; b = bIn; a = aIn;
41  }
42 
43  float r, g, b, a;
44 };
45 
48 class B2_API b2Draw
49 {
50 public:
51  b2Draw();
52 
53  virtual ~b2Draw() {}
54 
55  enum
56  {
57  e_shapeBit = 0x0001,
58  e_jointBit = 0x0002,
59  e_aabbBit = 0x0004,
60  e_pairBit = 0x0008,
61  e_centerOfMassBit = 0x0010
62  };
63 
65  void SetFlags(uint32 flags);
66 
68  uint32 GetFlags() const;
69 
71  void AppendFlags(uint32 flags);
72 
74  void ClearFlags(uint32 flags);
75 
77  virtual void DrawPolygon(const b2Vec2* vertices, int32 vertexCount, const b2Color& color) = 0;
78 
80  virtual void DrawSolidPolygon(const b2Vec2* vertices, int32 vertexCount, const b2Color& color) = 0;
81 
83  virtual void DrawCircle(const b2Vec2& center, float radius, const b2Color& color) = 0;
84 
86  virtual void DrawSolidCircle(const b2Vec2& center, float radius, const b2Vec2& axis, const b2Color& color) = 0;
87 
89  virtual void DrawSegment(const b2Vec2& p1, const b2Vec2& p2, const b2Color& color) = 0;
90 
93  virtual void DrawTransform(const b2Transform& xf) = 0;
94 
96  virtual void DrawPoint(const b2Vec2& p, float size, const b2Color& color) = 0;
97 
98 protected:
99  uint32 m_drawFlags;
100 };
101 
102 #endif
b2Vec2
A 2D column vector.
Definition: b2_math.h:41
b2Draw
Definition: b2_draw.h:48
b2Transform
Definition: b2_math.h:338
b2Color
Color for debug drawing. Each value has the range [0,1].
Definition: b2_draw.h:30