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# Box2D/Box2D/Collision/Shapes/b2Shape.h

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    00001 /*
    00002 * Copyright (c) 2006-2009 Erin Catto http://www.gphysics.com
    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_SHAPE_H
    00020 #define B2_SHAPE_H
    00021
    00022 #include <Box2D/Common/b2BlockAllocator.h>
    00023 #include <Box2D/Common/b2Math.h>
    00024 #include <Box2D/Collision/b2Collision.h>
    00025
    00027 struct b2MassData
    00028 {
    00030         float32 mass;
    00031
    00033         b2Vec2 center;
    00034
    00036         float32 I;
    00037 };
    00038
    00042 class b2Shape
    00043 {
    00044 public:
    00045
    00046         enum Type
    00047         {
    00048                 e_unknown= -1,
    00049                 e_circle = 0,
    00050                 e_polygon = 1,
    00051                 e_typeCount = 2,
    00052         };
    00053
    00054         b2Shape() { m_type = e_unknown; }
    00055         virtual ~b2Shape() {}
    00056
    00058         virtual b2Shape* Clone(b2BlockAllocator* allocator) const = 0;
    00059
    00062         Type GetType() const;
    00063
    00067         virtual bool TestPoint(const b2Transform& xf, const b2Vec2& p) const = 0;
    00068
    00073         virtual bool RayCast(b2RayCastOutput* output, const b2RayCastInput& input, const b2Transform& transform) const = 0;
    00074
    00078         virtual void ComputeAABB(b2AABB* aabb, const b2Transform& xf) const = 0;
    00079
    00084         virtual void ComputeMass(b2MassData* massData, float32 density) const = 0;
    00085
    00086         Type m_type;
    00087         float32 m_radius;
    00088 };
    00089
    00090 inline b2Shape::Type b2Shape::GetType() const
    00091 {
    00092         return m_type;
    00093 }
    00094
    00095 #endif