diff options
author | Erwin Coumans <blender@erwincoumans.com> | 2009-03-03 06:41:24 +0300 |
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committer | Erwin Coumans <blender@erwincoumans.com> | 2009-03-03 06:41:24 +0300 |
commit | 982a5cc60dd93b21ce110b3fff831d05720047bf (patch) | |
tree | 5d6245b0006f249c48e900b748aedd4484c10da3 /extern/bullet2/src/BulletCollision/CollisionDispatch/btConvexConvexAlgorithm.h | |
parent | f8ef887880ac217cc831b2ab9677e1f9e825537b (diff) |
Upgraded to Bullet 2.74. The upgrade introduced a few bugs, which need to be fixed before Blender 2.49.
In particular, the Bullet vehicle seems broken, and some soft-body demos don't work.
No new features or benefits are added yet, but a few improvements are planned before Blender 2.49 release.
Please update the build systems, and add those 3 files:
extern/bullet2/src/BulletCollision/CollisionDispatch/btActivatingCollisionAlgorithm.cpp
extern/bullet2/src/BulletCollision/CollisionDispatch/btGhostObject.cpp
extern/bullet2/src/BulletCollision/CollisionShapes/btConvexPointCloudShape.cpp
I'll watch the Blender mailing list, in case this commit causes some issues.
Diffstat (limited to 'extern/bullet2/src/BulletCollision/CollisionDispatch/btConvexConvexAlgorithm.h')
-rw-r--r-- | extern/bullet2/src/BulletCollision/CollisionDispatch/btConvexConvexAlgorithm.h | 39 |
1 files changed, 31 insertions, 8 deletions
diff --git a/extern/bullet2/src/BulletCollision/CollisionDispatch/btConvexConvexAlgorithm.h b/extern/bullet2/src/BulletCollision/CollisionDispatch/btConvexConvexAlgorithm.h index a0030e6793d..62dd33eb98d 100644 --- a/extern/bullet2/src/BulletCollision/CollisionDispatch/btConvexConvexAlgorithm.h +++ b/extern/bullet2/src/BulletCollision/CollisionDispatch/btConvexConvexAlgorithm.h @@ -16,30 +16,50 @@ subject to the following restrictions: #ifndef CONVEX_CONVEX_ALGORITHM_H #define CONVEX_CONVEX_ALGORITHM_H -#include "BulletCollision/BroadphaseCollision/btCollisionAlgorithm.h" +#include "btActivatingCollisionAlgorithm.h" #include "BulletCollision/NarrowPhaseCollision/btGjkPairDetector.h" #include "BulletCollision/NarrowPhaseCollision/btPersistentManifold.h" #include "BulletCollision/BroadphaseCollision/btBroadphaseProxy.h" #include "BulletCollision/NarrowPhaseCollision/btVoronoiSimplexSolver.h" #include "btCollisionCreateFunc.h" #include "btCollisionDispatcher.h" +#include "LinearMath/btTransformUtil.h" //for btConvexSeparatingDistanceUtil class btConvexPenetrationDepthSolver; -///ConvexConvexAlgorithm collision algorithm implements time of impact, convex closest points and penetration depth calculations. -class btConvexConvexAlgorithm : public btCollisionAlgorithm +///Enabling USE_SEPDISTANCE_UTIL2 requires 100% reliable distance computation. However, when using large size ratios GJK can be imprecise +///so the distance is not conservative. In that case, enabling this USE_SEPDISTANCE_UTIL2 would result in failing/missing collisions. +///Either improve GJK for large size ratios (testing a 100 units versus a 0.1 unit object) or only enable the util +///for certain pairs that have a small size ratio +///#define USE_SEPDISTANCE_UTIL2 1 + +///The convexConvexAlgorithm collision algorithm implements time of impact, convex closest points and penetration depth calculations between two convex objects. +///Multiple contact points are calculated by perturbing the orientation of the smallest object orthogonal to the separating normal. +///This idea was described by Gino van den Bergen in this forum topic http://www.bulletphysics.com/Bullet/phpBB3/viewtopic.php?f=4&t=288&p=888#p888 +class btConvexConvexAlgorithm : public btActivatingCollisionAlgorithm { - btGjkPairDetector m_gjkPairDetector; -public: +#ifdef USE_SEPDISTANCE_UTIL2 + btConvexSeparatingDistanceUtil m_sepDistance; +#endif + btSimplexSolverInterface* m_simplexSolver; + btConvexPenetrationDepthSolver* m_pdSolver; + bool m_ownManifold; btPersistentManifold* m_manifoldPtr; bool m_lowLevelOfDetail; + int m_numPerturbationIterations; + int m_minimumPointsPerturbationThreshold; + + + ///cache separating vector to speedup collision detection + public: - btConvexConvexAlgorithm(btPersistentManifold* mf,const btCollisionAlgorithmConstructionInfo& ci,btCollisionObject* body0,btCollisionObject* body1, btSimplexSolverInterface* simplexSolver, btConvexPenetrationDepthSolver* pdSolver); + btConvexConvexAlgorithm(btPersistentManifold* mf,const btCollisionAlgorithmConstructionInfo& ci,btCollisionObject* body0,btCollisionObject* body1, btSimplexSolverInterface* simplexSolver, btConvexPenetrationDepthSolver* pdSolver, int numPerturbationIterations, int minimumPointsPerturbationThreshold); + virtual ~btConvexConvexAlgorithm(); @@ -65,9 +85,12 @@ public: struct CreateFunc :public btCollisionAlgorithmCreateFunc { + btConvexPenetrationDepthSolver* m_pdSolver; btSimplexSolverInterface* m_simplexSolver; - + int m_numPerturbationIterations; + int m_minimumPointsPerturbationThreshold; + CreateFunc(btSimplexSolverInterface* simplexSolver, btConvexPenetrationDepthSolver* pdSolver); virtual ~CreateFunc(); @@ -75,7 +98,7 @@ public: virtual btCollisionAlgorithm* CreateCollisionAlgorithm(btCollisionAlgorithmConstructionInfo& ci, btCollisionObject* body0,btCollisionObject* body1) { void* mem = ci.m_dispatcher1->allocateCollisionAlgorithm(sizeof(btConvexConvexAlgorithm)); - return new(mem) btConvexConvexAlgorithm(ci.m_manifold,ci,body0,body1,m_simplexSolver,m_pdSolver); + return new(mem) btConvexConvexAlgorithm(ci.m_manifold,ci,body0,body1,m_simplexSolver,m_pdSolver,m_numPerturbationIterations,m_minimumPointsPerturbationThreshold); } }; |