b2ChainShape.h
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00001 /*
00002 * Copyright (c) 2006-2010 Erin Catto http://www.box2d.org
00003 *
00004 * This software is provided 'as-is', without any express or implied
00005 * warranty.  In no event will the authors be held liable for any damages
00006 * arising from the use of this software.
00007 * Permission is granted to anyone to use this software for any purpose,
00008 * including commercial applications, and to alter it and redistribute it
00009 * freely, subject to the following restrictions:
00010 * 1. The origin of this software must not be misrepresented; you must not
00011 * claim that you wrote the original software. If you use this software
00012 * in a product, an acknowledgment in the product documentation would be
00013 * appreciated but is not required.
00014 * 2. Altered source versions must be plainly marked as such, and must not be
00015 * misrepresented as being the original software.
00016 * 3. This notice may not be removed or altered from any source distribution.
00017 */
00018 
00019 #ifndef B2_CHAIN_SHAPE_H
00020 #define B2_CHAIN_SHAPE_H
00021 
00022 #include <Box2D/Collision/Shapes/b2Shape.h>
00023 
00024 class b2EdgeShape;
00025 
00032 class b2ChainShape : public b2Shape
00033 {
00034 public:
00035         b2ChainShape();
00036 
00038         ~b2ChainShape();
00039 
00041         void Clear();
00042 
00046         void CreateLoop(const b2Vec2* vertices, int32 count);
00047 
00051         void CreateChain(const b2Vec2* vertices, int32 count);
00052 
00055         void SetPrevVertex(const b2Vec2& prevVertex);
00056 
00059         void SetNextVertex(const b2Vec2& nextVertex);
00060 
00062         b2Shape* Clone(b2BlockAllocator* allocator) const;
00063 
00065         int32 GetChildCount() const;
00066 
00068         void GetChildEdge(b2EdgeShape* edge, int32 index) const;
00069 
00072         bool TestPoint(const b2Transform& transform, const b2Vec2& p) const;
00073 
00075         bool RayCast(b2RayCastOutput* output, const b2RayCastInput& input,
00076                                         const b2Transform& transform, int32 childIndex) const;
00077 
00079         void ComputeAABB(b2AABB* aabb, const b2Transform& transform, int32 childIndex) const;
00080 
00083         void ComputeMass(b2MassData* massData, float32 density) const;
00084 
00086         b2Vec2* m_vertices;
00087 
00089         int32 m_count;
00090 
00091         b2Vec2 m_prevVertex, m_nextVertex;
00092         bool m_hasPrevVertex, m_hasNextVertex;
00093 };
00094 
00095 inline b2ChainShape::b2ChainShape()
00096 {
00097         m_type = e_chain;
00098         m_radius = b2_polygonRadius;
00099         m_vertices = NULL;
00100         m_count = 0;
00101         m_hasPrevVertex = false;
00102         m_hasNextVertex = false;
00103 }
00104 
00105 #endif


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autogenerated on Thu Jun 6 2019 22:08:34