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b2EdgeShape.h

    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_EDGE_SHAPE_H
    00020 #define B2_EDGE_SHAPE_H
    00021
    00022 #include <Box2D/Collision/Shapes/b2Shape.h>
    00023
    00027 class b2EdgeShape : public b2Shape
    00028 {
    00029 public:
    00030         b2EdgeShape();
    00031
    00033         void Set(const b2Vec2& v1, const b2Vec2& v2);
    00034
    00036         b2Shape* Clone(b2BlockAllocator* allocator) const;
    00037
    00039         int32 GetChildCount() const;
    00040
    00042         bool TestPoint(const b2Transform& transform, const b2Vec2& p) const;
    00043
    00045         bool RayCast(b2RayCastOutput* output, const b2RayCastInput& input,
    00046                                 const b2Transform& transform, int32 childIndex) const;
    00047
    00049         void ComputeAABB(b2AABB* aabb, const b2Transform& transform, int32 childIndex) const;
    00050
    00052         void ComputeMass(b2MassData* massData, float32 density) const;
    00053
    00055         b2Vec2 m_vertex1, m_vertex2;
    00056
    00058         b2Vec2 m_vertex0, m_vertex3;
    00059         bool m_hasVertex0, m_hasVertex3;
    00060 };
    00061
    00062 inline b2EdgeShape::b2EdgeShape()
    00063 {
    00064         m_type = e_edge;
    00065         m_radius = b2_polygonRadius;
    00066         m_vertex0.x = 0.0f;
    00067         m_vertex0.y = 0.0f;
    00068         m_vertex3.x = 0.0f;
    00069         m_vertex3.y = 0.0f;
    00070         m_hasVertex0 = false;
    00071         m_hasVertex3 = false;
    00072 }
    00073
    00074 #endif

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