b2PolygonShape.h
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00001 /*
00002 * Copyright (c) 2006-2009 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_POLYGON_SHAPE_H
00020 #define B2_POLYGON_SHAPE_H
00021 
00022 #include <Box2D/Collision/Shapes/b2Shape.h>
00023 
00028 class b2PolygonShape : public b2Shape
00029 {
00030 public:
00031         b2PolygonShape();
00032 
00034         b2Shape* Clone(b2BlockAllocator* allocator) const;
00035 
00037         int32 GetChildCount() const;
00038 
00044         void Set(const b2Vec2* points, int32 count);
00045 
00049         void SetAsBox(float32 hx, float32 hy);
00050 
00056         void SetAsBox(float32 hx, float32 hy, const b2Vec2& center, float32 angle);
00057 
00059         bool TestPoint(const b2Transform& transform, const b2Vec2& p) const;
00060 
00062         bool RayCast(b2RayCastOutput* output, const b2RayCastInput& input,
00063                                         const b2Transform& transform, int32 childIndex) const;
00064 
00066         void ComputeAABB(b2AABB* aabb, const b2Transform& transform, int32 childIndex) const;
00067 
00069         void ComputeMass(b2MassData* massData, float32 density) const;
00070 
00072         int32 GetVertexCount() const { return m_count; }
00073 
00075         const b2Vec2& GetVertex(int32 index) const;
00076 
00079         bool Validate() const;
00080 
00081         b2Vec2 m_centroid;
00082         b2Vec2 m_vertices[b2_maxPolygonVertices];
00083         b2Vec2 m_normals[b2_maxPolygonVertices];
00084         int32 m_count;
00085 };
00086 
00087 inline b2PolygonShape::b2PolygonShape()
00088 {
00089         m_type = e_polygon;
00090         m_radius = b2_polygonRadius;
00091         m_count = 0;
00092         m_centroid.SetZero();
00093 }
00094 
00095 inline const b2Vec2& b2PolygonShape::GetVertex(int32 index) const
00096 {
00097         b2Assert(0 <= index && index < m_count);
00098         return m_vertices[index];
00099 }
00100 
00101 #endif


mvsim
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autogenerated on Thu Jun 6 2019 22:08:34