SpuContactManifoldCollisionAlgorithm.h

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/*
Bullet Continuous Collision Detection and Physics Library
Copyright (c) 2003-2007 Erwin Coumans  http://bulletphysics.com

This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose, 
including commercial applications, and to alter it and redistribute it freely, 
subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/

#ifndef BT_SPU_CONTACTMANIFOLD_COLLISION_ALGORITHM_H
#define BT_SPU_CONTACTMANIFOLD_COLLISION_ALGORITHM_H

#include "BulletCollision/BroadphaseCollision/btCollisionAlgorithm.h"
#include "BulletCollision/BroadphaseCollision/btBroadphaseProxy.h"
#include "BulletCollision/CollisionDispatch/btCollisionCreateFunc.h"
#include "BulletCollision/BroadphaseCollision/btDispatcher.h"
#include "LinearMath/btTransformUtil.h"
#include "BulletCollision/CollisionDispatch/btCollisionObjectWrapper.h"

class btPersistentManifold;

//#define USE_SEPDISTANCE_UTIL 1

ATTRIBUTE_ALIGNED16(class) SpuContactManifoldCollisionAlgorithm : public btCollisionAlgorithm
{
        btVector3       m_shapeDimensions0;
        btVector3       m_shapeDimensions1;
        btPersistentManifold*   m_manifoldPtr;
        int             m_shapeType0;
        int             m_shapeType1;
        float   m_collisionMargin0;
        float   m_collisionMargin1;

        const btCollisionObject*        m_collisionObject0;
        const btCollisionObject*        m_collisionObject1;
        
        

        
public:
        
        virtual void processCollision (const btCollisionObjectWrapper* body0Wrap,const btCollisionObjectWrapper* body1Wrap,const btDispatcherInfo& dispatchInfo,btManifoldResult* resultOut);

        virtual btScalar calculateTimeOfImpact(btCollisionObject* body0,btCollisionObject* body1,const btDispatcherInfo& dispatchInfo,btManifoldResult* resultOut);

        
        SpuContactManifoldCollisionAlgorithm(const btCollisionAlgorithmConstructionInfo& ci,const btCollisionObject* body0,const btCollisionObject* body1);
#ifdef USE_SEPDISTANCE_UTIL
        btConvexSeparatingDistanceUtil  m_sepDistance;
#endif //USE_SEPDISTANCE_UTIL

        virtual ~SpuContactManifoldCollisionAlgorithm();

        virtual void    getAllContactManifolds(btManifoldArray& manifoldArray)
        {
                if (m_manifoldPtr)
                        manifoldArray.push_back(m_manifoldPtr);
        }

        btPersistentManifold*   getContactManifoldPtr()
        {
                return m_manifoldPtr;
        }

        const btCollisionObject*        getCollisionObject0()
        {
                return m_collisionObject0;
        }
        
        const btCollisionObject*        getCollisionObject1()
        {
                return m_collisionObject1;
        }

        int             getShapeType0() const
        {
                return m_shapeType0;
        }

        int             getShapeType1() const
        {
                return m_shapeType1;
        }
        float   getCollisionMargin0() const
        {
                return m_collisionMargin0;
        }
        float   getCollisionMargin1() const
        {
                return m_collisionMargin1;
        }

        const btVector3&        getShapeDimensions0() const
        {
                return m_shapeDimensions0;
        }

        const btVector3&        getShapeDimensions1() const
        {
                return m_shapeDimensions1;
        }

        struct CreateFunc :public       btCollisionAlgorithmCreateFunc
        {
        virtual btCollisionAlgorithm* CreateCollisionAlgorithm(btCollisionAlgorithmConstructionInfo& ci, const btCollisionObjectWrapper* body0Wrap,const btCollisionObjectWrapper* body1Wrap)
                {
                        void* mem = ci.m_dispatcher1->allocateCollisionAlgorithm(sizeof(SpuContactManifoldCollisionAlgorithm));
                        return new(mem) SpuContactManifoldCollisionAlgorithm(ci,body0Wrap->getCollisionObject(),body1Wrap->getCollisionObject());
                }
        };

};

#endif //BT_SPU_CONTACTMANIFOLD_COLLISION_ALGORITHM_H