src/BulletCollision/Gimpact/btGImpactCollisionAlgorithm.h

   1 /*! \file btGImpactShape.h
   2 \author Francisco Leon Najera
   3 */
   4 /*
   5 This source file is part of GIMPACT Library.
   6
   7 For the latest info, see http://gimpact.sourceforge.net/
   8
   9 Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
  10 email: projectileman@yahoo.com
  11
  12
  13 This software is provided 'as-is', without any express or implied warranty.
  14 In no event will the authors be held liable for any damages arising from the use of this software.
  15 Permission is granted to anyone to use this software for any purpose,
  16 including commercial applications, and to alter it and redistribute it freely,
  17 subject to the following restrictions:
  18
  19 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.
  20 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
  21 3. This notice may not be removed or altered from any source distribution.
  22 */
  23
  24 #ifndef BT_GIMPACT_BVH_CONCAVE_COLLISION_ALGORITHM_H
  25 #define BT_GIMPACT_BVH_CONCAVE_COLLISION_ALGORITHM_H
  26
  27 #include "BulletCollision/CollisionDispatch/btActivatingCollisionAlgorithm.h"
  28 #include "BulletCollision/BroadphaseCollision/btDispatcher.h"
  29 #include "BulletCollision/BroadphaseCollision/btBroadphaseInterface.h"
  30 #include "BulletCollision/NarrowPhaseCollision/btPersistentManifold.h"
  31 class btDispatcher;
  32 #include "BulletCollision/BroadphaseCollision/btBroadphaseProxy.h"
  33 #include "BulletCollision/CollisionDispatch/btCollisionCreateFunc.h"
  34 #include "BulletCollision/CollisionDispatch/btCollisionDispatcher.h"
  35
  36 #include "LinearMath/btAlignedObjectArray.h"
  37
  38 #include "btGImpactShape.h"
  39 #include "BulletCollision/CollisionShapes/btStaticPlaneShape.h"
  40 #include "BulletCollision/CollisionShapes/btCompoundShape.h"
  41 #include "BulletCollision/CollisionDispatch/btConvexConvexAlgorithm.h"
  42 #include "LinearMath/btIDebugDraw.h"
  43
  44
  45
  46 //! Collision Algorithm for GImpact Shapes
  47 /*!
  48 For register this algorithm in Bullet, proceed as following:
  49  \code
  50 btCollisionDispatcher * dispatcher = static_cast<btCollisionDispatcher *>(m_dynamicsWorld ->getDispatcher());
  51 btGImpactCollisionAlgorithm::registerAlgorithm(dispatcher);
  52  \endcode
  53 */
  54 class btGImpactCollisionAlgorithm : public btActivatingCollisionAlgorithm
  55 {
  56 protected:
  57         btCollisionAlgorithm * m_convex_algorithm;
  58     btPersistentManifold * m_manifoldPtr;
  59         btManifoldResult* m_resultOut;
  60         const btDispatcherInfo * m_dispatchInfo;
  61         int m_triface0;
  62         int m_part0;
  63         int m_triface1;
  64         int m_part1;
  65
  66
  67         //! Creates a new contact point
  68         SIMD_FORCE_INLINE btPersistentManifold* newContactManifold(btCollisionObject* body0,btCollisionObject* body1)
  69         {
  70                 m_manifoldPtr = m_dispatcher->getNewManifold(body0,body1);
  71                 return m_manifoldPtr;
  72         }
  73
  74         SIMD_FORCE_INLINE void destroyConvexAlgorithm()
  75         {
  76                 if(m_convex_algorithm)
  77                 {
  78                         m_convex_algorithm->~btCollisionAlgorithm();
  79                         m_dispatcher->freeCollisionAlgorithm( m_convex_algorithm);
  80                         m_convex_algorithm = NULL;
  81                 }
  82         }
  83
  84         SIMD_FORCE_INLINE void destroyContactManifolds()
  85         {
  86                 if(m_manifoldPtr == NULL) return;
  87                 m_dispatcher->releaseManifold(m_manifoldPtr);
  88                 m_manifoldPtr = NULL;
  89         }
  90
  91         SIMD_FORCE_INLINE void clearCache()
  92         {
  93                 destroyContactManifolds();
  94                 destroyConvexAlgorithm();
  95
  96                 m_triface0 = -1;
  97                 m_part0 = -1;
  98                 m_triface1 = -1;
  99                 m_part1 = -1;
 100         }
 101
 102         SIMD_FORCE_INLINE btPersistentManifold* getLastManifold()
 103         {
 104                 return m_manifoldPtr;
 105         }
 106
 107
 108         // Call before process collision
 109         SIMD_FORCE_INLINE void checkManifold(btCollisionObject* body0,btCollisionObject* body1)
 110         {
 111                 if(getLastManifold() == 0)
 112                 {
 113                         newContactManifold(body0,body1);
 114                 }
 115
 116                 m_resultOut->setPersistentManifold(getLastManifold());
 117         }
 118
 119         // Call before process collision
 120         SIMD_FORCE_INLINE btCollisionAlgorithm * newAlgorithm(btCollisionObject* body0,btCollisionObject* body1)
 121         {
 122                 checkManifold(body0,body1);
 123
 124                 btCollisionAlgorithm * convex_algorithm = m_dispatcher->findAlgorithm(
 125                                 body0,body1,getLastManifold());
 126                 return convex_algorithm ;
 127         }
 128
 129         // Call before process collision
 130         SIMD_FORCE_INLINE void checkConvexAlgorithm(btCollisionObject* body0,btCollisionObject* body1)
 131         {
 132                 if(m_convex_algorithm) return;
 133                 m_convex_algorithm = newAlgorithm(body0,body1);
 134         }
 135
 136
 137
 138
 139         void addContactPoint(btCollisionObject * body0,
 140                                         btCollisionObject * body1,
 141                                         const btVector3 & point,
 142                                         const btVector3 & normal,
 143                                         btScalar distance);
 144
 145 //! Collision routines
 146 //!@{
 147
 148         void collide_gjk_triangles(btCollisionObject * body0,
 149                                   btCollisionObject * body1,
 150                                   btGImpactMeshShapePart * shape0,
 151                                   btGImpactMeshShapePart * shape1,
 152                                   const int * pairs, int pair_count);
 153
 154         void collide_sat_triangles(btCollisionObject * body0,
 155                                           btCollisionObject * body1,
 156                                           btGImpactMeshShapePart * shape0,
 157                                           btGImpactMeshShapePart * shape1,
 158                                           const int * pairs, int pair_count);
 159
 160
 161
 162
 163         void shape_vs_shape_collision(
 164                                           btCollisionObject * body0,
 165                                           btCollisionObject * body1,
 166                                           btCollisionShape * shape0,
 167                                           btCollisionShape * shape1);
 168
 169         void convex_vs_convex_collision(btCollisionObject * body0,
 170                                           btCollisionObject * body1,
 171                                           btCollisionShape * shape0,
 172                                           btCollisionShape * shape1);
 173
 174
 175
 176         void gimpact_vs_gimpact_find_pairs(
 177                                           const btTransform & trans0,
 178                                           const btTransform & trans1,
 179                                           btGImpactShapeInterface * shape0,
 180                                           btGImpactShapeInterface * shape1,btPairSet & pairset);
 181
 182         void gimpact_vs_shape_find_pairs(
 183                                           const btTransform & trans0,
 184                                           const btTransform & trans1,
 185                                           btGImpactShapeInterface * shape0,
 186                                           btCollisionShape * shape1,
 187                                           btAlignedObjectArray<int> & collided_primitives);
 188
 189
 190         void gimpacttrimeshpart_vs_plane_collision(
 191                                           btCollisionObject * body0,
 192                                           btCollisionObject * body1,
 193                                           btGImpactMeshShapePart * shape0,
 194                                           btStaticPlaneShape * shape1,bool swapped);
 195
 196
 197 public:
 198
 199         btGImpactCollisionAlgorithm( const btCollisionAlgorithmConstructionInfo& ci,btCollisionObject* body0,btCollisionObject* body1);
 200
 201         virtual ~btGImpactCollisionAlgorithm();
 202
 203         virtual void processCollision (btCollisionObject* body0,btCollisionObject* body1,const btDispatcherInfo& dispatchInfo,btManifoldResult* resultOut);
 204
 205         btScalar        calculateTimeOfImpact(btCollisionObject* body0,btCollisionObject* body1,const btDispatcherInfo& dispatchInfo,btManifoldResult* resultOut);
 206
 207         virtual void    getAllContactManifolds(btManifoldArray& manifoldArray)
 208         {
 209                 if (m_manifoldPtr)
 210                         manifoldArray.push_back(m_manifoldPtr);
 211         }
 212
 213
 214         struct CreateFunc :public       btCollisionAlgorithmCreateFunc
 215         {
 216                 virtual btCollisionAlgorithm* CreateCollisionAlgorithm(btCollisionAlgorithmConstructionInfo& ci, btCollisionObject* body0,btCollisionObject* body1)
 217                 {
 218                         void* mem = ci.m_dispatcher1->allocateCollisionAlgorithm(sizeof(btGImpactCollisionAlgorithm));
 219                         return new(mem) btGImpactCollisionAlgorithm(ci,body0,body1);
 220                 }
 221         };
 222
 223         //! Use this function for register the algorithm externally
 224         static void registerAlgorithm(btCollisionDispatcher * dispatcher);
 225 #ifdef TRI_COLLISION_PROFILING
 226         //! Gets the average time in miliseconds of tree collisions
 227         static float getAverageTreeCollisionTime();
 228
 229         //! Gets the average time in miliseconds of triangle collisions
 230         static float getAverageTriangleCollisionTime();
 231 #endif //TRI_COLLISION_PROFILING
 232
 233         //! Collides two gimpact shapes
 234         /*!
 235         \pre shape0 and shape1 couldn't be btGImpactMeshShape objects
 236         */
 237
 238
 239         void gimpact_vs_gimpact(btCollisionObject * body0,
 240                                           btCollisionObject * body1,
 241                                           btGImpactShapeInterface * shape0,
 242                                           btGImpactShapeInterface * shape1);
 243
 244         void gimpact_vs_shape(btCollisionObject * body0,
 245                                           btCollisionObject * body1,
 246                                           btGImpactShapeInterface * shape0,
 247                                           btCollisionShape * shape1,bool swapped);
 248
 249         void gimpact_vs_compoundshape(btCollisionObject * body0,
 250                                           btCollisionObject * body1,
 251                                           btGImpactShapeInterface * shape0,
 252                                           btCompoundShape * shape1,bool swapped);
 253
 254         void gimpact_vs_concave(
 255                                           btCollisionObject * body0,
 256                                           btCollisionObject * body1,
 257                                           btGImpactShapeInterface * shape0,
 258                                           btConcaveShape * shape1,bool swapped);
 259
 260
 261
 262
 263                 /// Accessor/Mutator pairs for Part and triangleID
 264     void        setFace0(int value)
 265     {
 266         m_triface0 = value;
 267     }
 268     int getFace0()
 269     {
 270         return m_triface0;
 271     }
 272     void setFace1(int value)
 273     {
 274         m_triface1 = value;
 275     }
 276     int getFace1()
 277     {
 278         return m_triface1;
 279     }
 280     void setPart0(int value)
 281     {
 282         m_part0 = value;
 283     }
 284     int getPart0()
 285     {
 286         return m_part0;
 287     }
 288     void setPart1(int value)
 289     {
 290         m_part1 = value;
 291                 }
 292     int getPart1()
 293     {
 294         return m_part1;
 295     }
 296
 297 };
 298
 299
 300 //algorithm details
 301 //#define BULLET_TRIANGLE_COLLISION 1
 302 #define GIMPACT_VS_PLANE_COLLISION 1
 303
 304
 305
 306 #endif //BT_GIMPACT_BVH_CONCAVE_COLLISION_ALGORITHM_H