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lib/haxebullet/bullet/BulletCollision/BroadphaseCollision/btDbvtBroadphase.h

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+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2009 Erwin Coumans  http://bulletphysics.org
+
+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.
+*/
+
+///btDbvtBroadphase implementation by Nathanael Presson
+#ifndef BT_DBVT_BROADPHASE_H
+#define BT_DBVT_BROADPHASE_H
+
+#include "BulletCollision/BroadphaseCollision/btDbvt.h"
+#include "BulletCollision/BroadphaseCollision/btOverlappingPairCache.h"
+
+//
+// Compile time config
+//
+
+#define	DBVT_BP_PROFILE					0
+//#define DBVT_BP_SORTPAIRS				1
+#define DBVT_BP_PREVENTFALSEUPDATE		0
+#define DBVT_BP_ACCURATESLEEPING		0
+#define DBVT_BP_ENABLE_BENCHMARK		0
+#define DBVT_BP_MARGIN					(btScalar)0.05
+
+#if DBVT_BP_PROFILE
+#define	DBVT_BP_PROFILING_RATE	256
+#include "LinearMath/btQuickprof.h"
+#endif
+
+//
+// btDbvtProxy
+//
+struct btDbvtProxy : btBroadphaseProxy
+{
+	/* Fields		*/ 
+	//btDbvtAabbMm	aabb;
+	btDbvtNode*		leaf;
+	btDbvtProxy*	links[2];
+	int				stage;
+	/* ctor			*/ 
+	btDbvtProxy(const btVector3& aabbMin,const btVector3& aabbMax,void* userPtr, int collisionFilterGroup,  int collisionFilterMask) :
+	btBroadphaseProxy(aabbMin,aabbMax,userPtr,collisionFilterGroup,collisionFilterMask)
+	{
+		links[0]=links[1]=0;
+	}
+};
+
+typedef btAlignedObjectArray<btDbvtProxy*>	btDbvtProxyArray;
+
+///The btDbvtBroadphase implements a broadphase using two dynamic AABB bounding volume hierarchies/trees (see btDbvt).
+///One tree is used for static/non-moving objects, and another tree is used for dynamic objects. Objects can move from one tree to the other.
+///This is a very fast broadphase, especially for very dynamic worlds where many objects are moving. Its insert/add and remove of objects is generally faster than the sweep and prune broadphases btAxisSweep3 and bt32BitAxisSweep3.
+struct	btDbvtBroadphase : btBroadphaseInterface
+{
+	/* Config		*/ 
+	enum	{
+		DYNAMIC_SET			=	0,	/* Dynamic set index	*/ 
+		FIXED_SET			=	1,	/* Fixed set index		*/ 
+		STAGECOUNT			=	2	/* Number of stages		*/ 
+	};
+	/* Fields		*/ 
+	btDbvt					m_sets[2];					// Dbvt sets
+	btDbvtProxy*			m_stageRoots[STAGECOUNT+1];	// Stages list
+	btOverlappingPairCache*	m_paircache;				// Pair cache
+	btScalar				m_prediction;				// Velocity prediction
+	int						m_stageCurrent;				// Current stage
+	int						m_fupdates;					// % of fixed updates per frame
+	int						m_dupdates;					// % of dynamic updates per frame
+	int						m_cupdates;					// % of cleanup updates per frame
+	int						m_newpairs;					// Number of pairs created
+	int						m_fixedleft;				// Fixed optimization left
+	unsigned				m_updates_call;				// Number of updates call
+	unsigned				m_updates_done;				// Number of updates done
+	btScalar				m_updates_ratio;			// m_updates_done/m_updates_call
+	int						m_pid;						// Parse id
+	int						m_cid;						// Cleanup index
+	int						m_gid;						// Gen id
+	bool					m_releasepaircache;			// Release pair cache on delete
+	bool					m_deferedcollide;			// Defere dynamic/static collision to collide call
+	bool					m_needcleanup;				// Need to run cleanup?
+    btAlignedObjectArray< btAlignedObjectArray<const btDbvtNode*> > m_rayTestStacks;
+#if DBVT_BP_PROFILE
+	btClock					m_clock;
+	struct	{
+		unsigned long		m_total;
+		unsigned long		m_ddcollide;
+		unsigned long		m_fdcollide;
+		unsigned long		m_cleanup;
+		unsigned long		m_jobcount;
+	}				m_profiling;
+#endif
+	/* Methods		*/ 
+	btDbvtBroadphase(btOverlappingPairCache* paircache=0);
+	~btDbvtBroadphase();
+	void							collide(btDispatcher* dispatcher);
+	void							optimize();
+	
+	/* btBroadphaseInterface Implementation	*/
+	btBroadphaseProxy*				createProxy(const btVector3& aabbMin,const btVector3& aabbMax,int shapeType,void* userPtr, int collisionFilterGroup, int collisionFilterMask,btDispatcher* dispatcher);
+	virtual void					destroyProxy(btBroadphaseProxy* proxy,btDispatcher* dispatcher);
+	virtual void					setAabb(btBroadphaseProxy* proxy,const btVector3& aabbMin,const btVector3& aabbMax,btDispatcher* dispatcher);
+	virtual void					rayTest(const btVector3& rayFrom,const btVector3& rayTo, btBroadphaseRayCallback& rayCallback, const btVector3& aabbMin=btVector3(0,0,0), const btVector3& aabbMax = btVector3(0,0,0));
+	virtual void					aabbTest(const btVector3& aabbMin, const btVector3& aabbMax, btBroadphaseAabbCallback& callback);
+
+	virtual void					getAabb(btBroadphaseProxy* proxy,btVector3& aabbMin, btVector3& aabbMax ) const;
+	virtual	void					calculateOverlappingPairs(btDispatcher* dispatcher);
+	virtual	btOverlappingPairCache*	getOverlappingPairCache();
+	virtual	const btOverlappingPairCache*	getOverlappingPairCache() const;
+	virtual	void					getBroadphaseAabb(btVector3& aabbMin,btVector3& aabbMax) const;
+	virtual	void					printStats();
+
+
+	///reset broadphase internal structures, to ensure determinism/reproducability
+	virtual void resetPool(btDispatcher* dispatcher);
+
+	void	performDeferredRemoval(btDispatcher* dispatcher);
+	
+	void	setVelocityPrediction(btScalar prediction)
+	{
+		m_prediction = prediction;
+	}
+	btScalar getVelocityPrediction() const
+	{
+		return m_prediction;
+	}
+
+	///this setAabbForceUpdate is similar to setAabb but always forces the aabb update. 
+	///it is not part of the btBroadphaseInterface but specific to btDbvtBroadphase.
+	///it bypasses certain optimizations that prevent aabb updates (when the aabb shrinks), see
+	///http://code.google.com/p/bullet/issues/detail?id=223
+	void							setAabbForceUpdate(		btBroadphaseProxy* absproxy,const btVector3& aabbMin,const btVector3& aabbMax,btDispatcher* /*dispatcher*/);
+
+	static void						benchmark(btBroadphaseInterface*);
+
+
+};
+
+#endif