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Diffstat (limited to 'thirdparty/bullet/BulletCollision/BroadphaseCollision/btDbvtBroadphase.h')
| -rw-r--r-- | thirdparty/bullet/BulletCollision/BroadphaseCollision/btDbvtBroadphase.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/thirdparty/bullet/BulletCollision/BroadphaseCollision/btDbvtBroadphase.h b/thirdparty/bullet/BulletCollision/BroadphaseCollision/btDbvtBroadphase.h new file mode 100644 index 0000000000..8feb95d51f --- /dev/null +++ b/thirdparty/bullet/BulletCollision/BroadphaseCollision/btDbvtBroadphase.h @@ -0,0 +1,147 @@ +/* +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 |