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lib/haxebullet/bullet/BulletCollision/Gimpact/btGImpactCollisionAlgorithm.h

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+/*! \file btGImpactShape.h
+\author Francisco Leon Najera
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.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_GIMPACT_BVH_CONCAVE_COLLISION_ALGORITHM_H
+#define BT_GIMPACT_BVH_CONCAVE_COLLISION_ALGORITHM_H
+
+#include "BulletCollision/CollisionDispatch/btActivatingCollisionAlgorithm.h"
+#include "BulletCollision/BroadphaseCollision/btDispatcher.h"
+#include "BulletCollision/BroadphaseCollision/btBroadphaseInterface.h"
+#include "BulletCollision/NarrowPhaseCollision/btPersistentManifold.h"
+class btDispatcher;
+#include "BulletCollision/BroadphaseCollision/btBroadphaseProxy.h"
+#include "BulletCollision/CollisionDispatch/btCollisionCreateFunc.h"
+#include "BulletCollision/CollisionDispatch/btCollisionDispatcher.h"
+
+#include "LinearMath/btAlignedObjectArray.h"
+
+#include "btGImpactShape.h"
+#include "BulletCollision/CollisionShapes/btStaticPlaneShape.h"
+#include "BulletCollision/CollisionShapes/btCompoundShape.h"
+#include "BulletCollision/CollisionDispatch/btConvexConvexAlgorithm.h"
+#include "LinearMath/btIDebugDraw.h"
+#include "BulletCollision/CollisionDispatch/btCollisionObjectWrapper.h"
+
+
+//! Collision Algorithm for GImpact Shapes
+/*!
+For register this algorithm in Bullet, proceed as following:
+ \code
+btCollisionDispatcher * dispatcher = static_cast<btCollisionDispatcher *>(m_dynamicsWorld ->getDispatcher());
+btGImpactCollisionAlgorithm::registerAlgorithm(dispatcher);
+ \endcode
+*/
+class btGImpactCollisionAlgorithm : public btActivatingCollisionAlgorithm
+{
+protected:
+	btCollisionAlgorithm * m_convex_algorithm;
+    btPersistentManifold * m_manifoldPtr;
+	btManifoldResult* m_resultOut;
+	const btDispatcherInfo * m_dispatchInfo;
+	int m_triface0;
+	int m_part0;
+	int m_triface1;
+	int m_part1;
+
+
+	//! Creates a new contact point
+	SIMD_FORCE_INLINE btPersistentManifold* newContactManifold(const btCollisionObject* body0,const btCollisionObject* body1)
+	{
+		m_manifoldPtr = m_dispatcher->getNewManifold(body0,body1);
+		return m_manifoldPtr;
+	}
+
+	SIMD_FORCE_INLINE void destroyConvexAlgorithm()
+	{
+		if(m_convex_algorithm)
+		{
+			m_convex_algorithm->~btCollisionAlgorithm();
+			m_dispatcher->freeCollisionAlgorithm( m_convex_algorithm);
+			m_convex_algorithm = NULL;
+		}
+	}
+
+	SIMD_FORCE_INLINE void destroyContactManifolds()
+	{
+		if(m_manifoldPtr == NULL) return;
+		m_dispatcher->releaseManifold(m_manifoldPtr);
+		m_manifoldPtr = NULL;
+	}
+
+	SIMD_FORCE_INLINE void clearCache()
+	{
+		destroyContactManifolds();
+		destroyConvexAlgorithm();
+
+		m_triface0 = -1;
+		m_part0 = -1;
+		m_triface1 = -1;
+		m_part1 = -1;
+	}
+
+	SIMD_FORCE_INLINE btPersistentManifold* getLastManifold()
+	{
+		return m_manifoldPtr;
+	}
+
+
+	// Call before process collision
+	SIMD_FORCE_INLINE void checkManifold(const btCollisionObjectWrapper* body0Wrap,const btCollisionObjectWrapper* body1Wrap)
+	{
+		if(getLastManifold() == 0)
+		{
+			newContactManifold(body0Wrap->getCollisionObject(),body1Wrap->getCollisionObject());
+		}
+
+		m_resultOut->setPersistentManifold(getLastManifold());
+	}
+
+	// Call before process collision
+	SIMD_FORCE_INLINE btCollisionAlgorithm * newAlgorithm(const btCollisionObjectWrapper* body0Wrap,const btCollisionObjectWrapper* body1Wrap)
+	{
+		checkManifold(body0Wrap,body1Wrap);
+
+		btCollisionAlgorithm * convex_algorithm = m_dispatcher->findAlgorithm(
+				body0Wrap,body1Wrap,getLastManifold(), BT_CONTACT_POINT_ALGORITHMS);
+		return convex_algorithm ;
+	}
+
+	// Call before process collision
+	SIMD_FORCE_INLINE void checkConvexAlgorithm(const btCollisionObjectWrapper* body0Wrap,const btCollisionObjectWrapper* body1Wrap)
+	{
+		if(m_convex_algorithm) return;
+		m_convex_algorithm = newAlgorithm(body0Wrap,body1Wrap);
+	}
+
+
+
+
+	void addContactPoint(const btCollisionObjectWrapper * body0Wrap,
+					const btCollisionObjectWrapper * body1Wrap,
+					const btVector3 & point,
+					const btVector3 & normal,
+					btScalar distance);
+
+//! Collision routines
+//!@{
+
+	void collide_gjk_triangles(const btCollisionObjectWrapper* body0Wrap,
+				  const btCollisionObjectWrapper* body1Wrap,
+				  const btGImpactMeshShapePart * shape0,
+				  const btGImpactMeshShapePart * shape1,
+				  const int * pairs, int pair_count);
+
+	void collide_sat_triangles(const btCollisionObjectWrapper* body0Wrap,
+					  const btCollisionObjectWrapper* body1Wrap,
+					  const btGImpactMeshShapePart * shape0,
+					  const btGImpactMeshShapePart * shape1,
+					  const int * pairs, int pair_count);
+
+
+
+
+	void shape_vs_shape_collision(
+					  const btCollisionObjectWrapper* body0,
+					  const btCollisionObjectWrapper* body1,
+					  const btCollisionShape * shape0,
+					  const btCollisionShape * shape1);
+
+	void convex_vs_convex_collision(const btCollisionObjectWrapper* body0Wrap,
+					  const btCollisionObjectWrapper* body1Wrap,
+					  const btCollisionShape* shape0,
+					  const btCollisionShape* shape1);
+
+
+
+	void gimpact_vs_gimpact_find_pairs(
+					  const btTransform & trans0,
+					  const btTransform & trans1,
+					  const btGImpactShapeInterface * shape0,
+					  const btGImpactShapeInterface * shape1,btPairSet & pairset);
+
+	void gimpact_vs_shape_find_pairs(
+					  const btTransform & trans0,
+					  const btTransform & trans1,
+					  const btGImpactShapeInterface * shape0,
+					  const btCollisionShape * shape1,
+					  btAlignedObjectArray<int> & collided_primitives);
+
+
+	void gimpacttrimeshpart_vs_plane_collision(
+					  const btCollisionObjectWrapper * body0Wrap,
+					  const btCollisionObjectWrapper * body1Wrap,
+					  const btGImpactMeshShapePart * shape0,
+					  const btStaticPlaneShape * shape1,bool swapped);
+
+
+public:
+
+	btGImpactCollisionAlgorithm( const btCollisionAlgorithmConstructionInfo& ci,const btCollisionObjectWrapper* body0Wrap,const btCollisionObjectWrapper* body1Wrap);
+
+	virtual ~btGImpactCollisionAlgorithm();
+
+	virtual void processCollision (const btCollisionObjectWrapper* body0Wrap,const btCollisionObjectWrapper* body1Wrap,const btDispatcherInfo& dispatchInfo,btManifoldResult* resultOut);
+
+	btScalar	calculateTimeOfImpact(btCollisionObject* body0,btCollisionObject* body1,const btDispatcherInfo& dispatchInfo,btManifoldResult* resultOut);
+
+	virtual	void	getAllContactManifolds(btManifoldArray&	manifoldArray)
+	{
+		if (m_manifoldPtr)
+			manifoldArray.push_back(m_manifoldPtr);
+	}
+
+	btManifoldResult*	internalGetResultOut()
+	{
+		return m_resultOut;
+	}
+
+	struct CreateFunc :public 	btCollisionAlgorithmCreateFunc
+	{
+		virtual	btCollisionAlgorithm* CreateCollisionAlgorithm(btCollisionAlgorithmConstructionInfo& ci, const btCollisionObjectWrapper* body0Wrap,const btCollisionObjectWrapper* body1Wrap)
+		{
+			void* mem = ci.m_dispatcher1->allocateCollisionAlgorithm(sizeof(btGImpactCollisionAlgorithm));
+			return new(mem) btGImpactCollisionAlgorithm(ci,body0Wrap,body1Wrap);
+		}
+	};
+
+	//! Use this function for register the algorithm externally
+	static void registerAlgorithm(btCollisionDispatcher * dispatcher);
+#ifdef TRI_COLLISION_PROFILING
+	//! Gets the average time in miliseconds of tree collisions
+	static float getAverageTreeCollisionTime();
+
+	//! Gets the average time in miliseconds of triangle collisions
+	static float getAverageTriangleCollisionTime();
+#endif //TRI_COLLISION_PROFILING
+
+	//! Collides two gimpact shapes
+	/*!
+	\pre shape0 and shape1 couldn't be btGImpactMeshShape objects
+	*/
+
+
+	void gimpact_vs_gimpact(const btCollisionObjectWrapper* body0Wrap,
+					  const btCollisionObjectWrapper * body1Wrap,
+					  const btGImpactShapeInterface * shape0,
+					  const btGImpactShapeInterface * shape1);
+
+	void gimpact_vs_shape(const btCollisionObjectWrapper* body0Wrap,
+					  const btCollisionObjectWrapper* body1Wrap,
+					  const btGImpactShapeInterface * shape0,
+					  const btCollisionShape * shape1,bool swapped);
+
+	void gimpact_vs_compoundshape(const btCollisionObjectWrapper * body0Wrap,
+					  const btCollisionObjectWrapper * body1Wrap,
+					  const btGImpactShapeInterface * shape0,
+					  const btCompoundShape * shape1,bool swapped);
+
+	void gimpact_vs_concave(
+					  const btCollisionObjectWrapper * body0Wrap,
+					  const btCollisionObjectWrapper * body1Wrap,
+					  const btGImpactShapeInterface * shape0,
+					  const btConcaveShape * shape1,bool swapped);
+
+
+
+
+		/// Accessor/Mutator pairs for Part and triangleID
+    void 	setFace0(int value) 
+    { 
+    	m_triface0 = value; 
+    }
+    int getFace0() 
+    { 
+    	return m_triface0; 
+    }
+    void setFace1(int value) 
+    { 
+    	m_triface1 = value; 
+    }
+    int getFace1() 
+    { 
+    	return m_triface1; 
+    }
+    void setPart0(int value) 
+    { 
+    	m_part0 = value; 
+    }
+    int getPart0() 
+    { 
+    	return m_part0; 
+    }
+    void setPart1(int value) 
+    { 
+    	m_part1 = value; 
+		}
+    int getPart1() 
+    { 
+    	return m_part1; 
+    }
+
+};
+
+
+//algorithm details
+//#define BULLET_TRIANGLE_COLLISION 1
+#define GIMPACT_VS_PLANE_COLLISION 1
+
+
+
+#endif //BT_GIMPACT_BVH_CONCAVE_COLLISION_ALGORITHM_H