b2ChainShape.h
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1 /*
2 * Copyright (c) 2006-2010 Erin Catto http://www.box2d.org
3 *
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9 * freely, subject to the following restrictions:
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17 */
18 
19 #ifndef B2_CHAIN_SHAPE_H
20 #define B2_CHAIN_SHAPE_H
21 
23 
24 class b2EdgeShape;
25 
32 class b2ChainShape : public b2Shape
33 {
34 public:
35  b2ChainShape();
36 
38  ~b2ChainShape();
39 
41  void Clear();
42 
46  void CreateLoop(const b2Vec2* vertices, int32 count);
47 
51  void CreateChain(const b2Vec2* vertices, int32 count);
52 
55  void SetPrevVertex(const b2Vec2& prevVertex);
56 
59  void SetNextVertex(const b2Vec2& nextVertex);
60 
62  b2Shape* Clone(b2BlockAllocator* allocator) const;
63 
65  int32 GetChildCount() const;
66 
68  void GetChildEdge(b2EdgeShape* edge, int32 index) const;
69 
72  bool TestPoint(const b2Transform& transform, const b2Vec2& p) const;
73 
75  bool RayCast(b2RayCastOutput* output, const b2RayCastInput& input,
76  const b2Transform& transform, int32 childIndex) const;
77 
79  void ComputeAABB(b2AABB* aabb, const b2Transform& transform, int32 childIndex) const;
80 
83  void ComputeMass(b2MassData* massData, float32 density) const;
84 
87 
90 
93 };
94 
96 {
97  m_type = e_chain;
99  m_vertices = NULL;
100  m_count = 0;
101  m_hasPrevVertex = false;
102  m_hasNextVertex = false;
103 }
104 
105 #endif
b2Vec2 m_nextVertex
Definition: b2ChainShape.h:91
b2Vec2 * m_vertices
The vertices. Owned by this class.
Definition: b2ChainShape.h:86
b2Shape * Clone(b2BlockAllocator *allocator) const
Implement b2Shape. Vertices are cloned using b2Alloc.
bool RayCast(b2RayCastOutput *output, const b2RayCastInput &input, const b2Transform &transform, int32 childIndex) const
Implement b2Shape.
GLenum GLenum GLenum input
Ray-cast input data. The ray extends from p1 to p1 + maxFraction * (p2 - p1).
Definition: b2Collision.h:147
#define b2_polygonRadius
Definition: b2Settings.h:77
~b2ChainShape()
The destructor frees the vertices using b2Free.
void SetPrevVertex(const b2Vec2 &prevVertex)
float32 m_radius
Definition: b2Shape.h:93
A 2D column vector.
Definition: b2Math.h:52
GLuint GLenum GLenum transform
void SetNextVertex(const b2Vec2 &nextVertex)
signed int int32
Definition: b2Settings.h:31
bool m_hasNextVertex
Definition: b2ChainShape.h:92
void ComputeMass(b2MassData *massData, float32 density) const
bool m_hasPrevVertex
Definition: b2ChainShape.h:92
void Clear()
Clear all data.
void ComputeAABB(b2AABB *aabb, const b2Transform &transform, int32 childIndex) const
GLfloat GLfloat p
void CreateLoop(const b2Vec2 *vertices, int32 count)
void GetChildEdge(b2EdgeShape *edge, int32 index) const
Get a child edge.
GLuint index
An axis aligned bounding box.
Definition: b2Collision.h:162
Type m_type
Definition: b2Shape.h:92
GLuint GLuint GLsizei count
int32 m_count
The vertex count.
Definition: b2ChainShape.h:89
b2Vec2 m_prevVertex
Definition: b2ChainShape.h:91
void CreateChain(const b2Vec2 *vertices, int32 count)
This holds the mass data computed for a shape.
Definition: b2Shape.h:27
int32 GetChildCount() const
float float32
Definition: b2Settings.h:35
bool TestPoint(const b2Transform &transform, const b2Vec2 &p) const


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autogenerated on Fri May 7 2021 03:05:51