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Diffstat (limited to 'thirdparty/bullet/BulletCollision/Gimpact/btGImpactCollisionAlgorithm.cpp')
| -rw-r--r-- | thirdparty/bullet/BulletCollision/Gimpact/btGImpactCollisionAlgorithm.cpp | 932 |
1 files changed, 932 insertions, 0 deletions
diff --git a/thirdparty/bullet/BulletCollision/Gimpact/btGImpactCollisionAlgorithm.cpp b/thirdparty/bullet/BulletCollision/Gimpact/btGImpactCollisionAlgorithm.cpp new file mode 100644 index 0000000000..2e87475e39 --- /dev/null +++ b/thirdparty/bullet/BulletCollision/Gimpact/btGImpactCollisionAlgorithm.cpp @@ -0,0 +1,932 @@ +/* +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. +*/ +/* +Author: Francisco Len Nßjera +Concave-Concave Collision + +*/ + +#include "BulletCollision/CollisionDispatch/btManifoldResult.h" +#include "LinearMath/btIDebugDraw.h" +#include "BulletCollision/CollisionDispatch/btCollisionObject.h" +#include "BulletCollision/CollisionShapes/btBoxShape.h" +#include "btGImpactCollisionAlgorithm.h" +#include "btContactProcessing.h" +#include "LinearMath/btQuickprof.h" + + +//! Class for accessing the plane equation +class btPlaneShape : public btStaticPlaneShape +{ +public: + + btPlaneShape(const btVector3& v, float f) + :btStaticPlaneShape(v,f) + { + } + + void get_plane_equation(btVector4 &equation) + { + equation[0] = m_planeNormal[0]; + equation[1] = m_planeNormal[1]; + equation[2] = m_planeNormal[2]; + equation[3] = m_planeConstant; + } + + + void get_plane_equation_transformed(const btTransform & trans,btVector4 &equation) const + { + equation[0] = trans.getBasis().getRow(0).dot(m_planeNormal); + equation[1] = trans.getBasis().getRow(1).dot(m_planeNormal); + equation[2] = trans.getBasis().getRow(2).dot(m_planeNormal); + equation[3] = trans.getOrigin().dot(m_planeNormal) + m_planeConstant; + } +}; + + + +////////////////////////////////////////////////////////////////////////////////////////////// +#ifdef TRI_COLLISION_PROFILING + +btClock g_triangle_clock; + +float g_accum_triangle_collision_time = 0; +int g_count_triangle_collision = 0; + +void bt_begin_gim02_tri_time() +{ + g_triangle_clock.reset(); +} + +void bt_end_gim02_tri_time() +{ + g_accum_triangle_collision_time += g_triangle_clock.getTimeMicroseconds(); + g_count_triangle_collision++; +} +#endif //TRI_COLLISION_PROFILING +//! Retrieving shapes shapes +/*! +Declared here due of insuficent space on Pool allocators +*/ +//!@{ +class GIM_ShapeRetriever +{ +public: + const btGImpactShapeInterface * m_gim_shape; + btTriangleShapeEx m_trishape; + btTetrahedronShapeEx m_tetrashape; + +public: + class ChildShapeRetriever + { + public: + GIM_ShapeRetriever * m_parent; + virtual const btCollisionShape * getChildShape(int index) + { + return m_parent->m_gim_shape->getChildShape(index); + } + virtual ~ChildShapeRetriever() {} + }; + + class TriangleShapeRetriever:public ChildShapeRetriever + { + public: + + virtual btCollisionShape * getChildShape(int index) + { + m_parent->m_gim_shape->getBulletTriangle(index,m_parent->m_trishape); + return &m_parent->m_trishape; + } + virtual ~TriangleShapeRetriever() {} + }; + + class TetraShapeRetriever:public ChildShapeRetriever + { + public: + + virtual btCollisionShape * getChildShape(int index) + { + m_parent->m_gim_shape->getBulletTetrahedron(index,m_parent->m_tetrashape); + return &m_parent->m_tetrashape; + } + }; +public: + ChildShapeRetriever m_child_retriever; + TriangleShapeRetriever m_tri_retriever; + TetraShapeRetriever m_tetra_retriever; + ChildShapeRetriever * m_current_retriever; + + GIM_ShapeRetriever(const btGImpactShapeInterface * gim_shape) + { + m_gim_shape = gim_shape; + //select retriever + if(m_gim_shape->needsRetrieveTriangles()) + { + m_current_retriever = &m_tri_retriever; + } + else if(m_gim_shape->needsRetrieveTetrahedrons()) + { + m_current_retriever = &m_tetra_retriever; + } + else + { + m_current_retriever = &m_child_retriever; + } + + m_current_retriever->m_parent = this; + } + + const btCollisionShape * getChildShape(int index) + { + return m_current_retriever->getChildShape(index); + } + + +}; + + + +//!@} + + +#ifdef TRI_COLLISION_PROFILING + +//! Gets the average time in miliseconds of tree collisions +float btGImpactCollisionAlgorithm::getAverageTreeCollisionTime() +{ + return btGImpactBoxSet::getAverageTreeCollisionTime(); + +} + +//! Gets the average time in miliseconds of triangle collisions +float btGImpactCollisionAlgorithm::getAverageTriangleCollisionTime() +{ + if(g_count_triangle_collision == 0) return 0; + + float avgtime = g_accum_triangle_collision_time; + avgtime /= (float)g_count_triangle_collision; + + g_accum_triangle_collision_time = 0; + g_count_triangle_collision = 0; + + return avgtime; +} + +#endif //TRI_COLLISION_PROFILING + + + +btGImpactCollisionAlgorithm::btGImpactCollisionAlgorithm( const btCollisionAlgorithmConstructionInfo& ci, const btCollisionObjectWrapper* body0Wrap,const btCollisionObjectWrapper* body1Wrap) +: btActivatingCollisionAlgorithm(ci,body0Wrap,body1Wrap) +{ + m_manifoldPtr = NULL; + m_convex_algorithm = NULL; +} + +btGImpactCollisionAlgorithm::~btGImpactCollisionAlgorithm() +{ + clearCache(); +} + + + + + +void btGImpactCollisionAlgorithm::addContactPoint(const btCollisionObjectWrapper * body0Wrap, + const btCollisionObjectWrapper * body1Wrap, + const btVector3 & point, + const btVector3 & normal, + btScalar distance) +{ + m_resultOut->setShapeIdentifiersA(m_part0,m_triface0); + m_resultOut->setShapeIdentifiersB(m_part1,m_triface1); + checkManifold(body0Wrap,body1Wrap); + m_resultOut->addContactPoint(normal,point,distance); +} + + +void btGImpactCollisionAlgorithm::shape_vs_shape_collision( + const btCollisionObjectWrapper * body0Wrap, + const btCollisionObjectWrapper* body1Wrap, + const btCollisionShape * shape0, + const btCollisionShape * shape1) +{ + + + { + + btCollisionAlgorithm* algor = newAlgorithm(body0Wrap,body1Wrap); + // post : checkManifold is called + + m_resultOut->setShapeIdentifiersA(m_part0,m_triface0); + m_resultOut->setShapeIdentifiersB(m_part1,m_triface1); + + algor->processCollision(body0Wrap,body1Wrap,*m_dispatchInfo,m_resultOut); + + algor->~btCollisionAlgorithm(); + m_dispatcher->freeCollisionAlgorithm(algor); + } + +} + +void btGImpactCollisionAlgorithm::convex_vs_convex_collision( + const btCollisionObjectWrapper* body0Wrap, + const btCollisionObjectWrapper* body1Wrap, + const btCollisionShape* shape0, + const btCollisionShape* shape1) +{ + + m_resultOut->setShapeIdentifiersA(m_part0,m_triface0); + m_resultOut->setShapeIdentifiersB(m_part1,m_triface1); + + btCollisionObjectWrapper ob0(body0Wrap,shape0,body0Wrap->getCollisionObject(),body0Wrap->getWorldTransform(),m_part0,m_triface0); + btCollisionObjectWrapper ob1(body1Wrap,shape1,body1Wrap->getCollisionObject(),body1Wrap->getWorldTransform(),m_part1,m_triface1); + checkConvexAlgorithm(&ob0,&ob1); + m_convex_algorithm->processCollision(&ob0,&ob1,*m_dispatchInfo,m_resultOut); + + +} + + + + +void btGImpactCollisionAlgorithm::gimpact_vs_gimpact_find_pairs( + const btTransform & trans0, + const btTransform & trans1, + const btGImpactShapeInterface * shape0, + const btGImpactShapeInterface * shape1,btPairSet & pairset) +{ + if(shape0->hasBoxSet() && shape1->hasBoxSet()) + { + btGImpactBoxSet::find_collision(shape0->getBoxSet(),trans0,shape1->getBoxSet(),trans1,pairset); + } + else + { + btAABB boxshape0; + btAABB boxshape1; + int i = shape0->getNumChildShapes(); + + while(i--) + { + shape0->getChildAabb(i,trans0,boxshape0.m_min,boxshape0.m_max); + + int j = shape1->getNumChildShapes(); + while(j--) + { + shape1->getChildAabb(i,trans1,boxshape1.m_min,boxshape1.m_max); + + if(boxshape1.has_collision(boxshape0)) + { + pairset.push_pair(i,j); + } + } + } + } + + +} + + +void btGImpactCollisionAlgorithm::gimpact_vs_shape_find_pairs( + const btTransform & trans0, + const btTransform & trans1, + const btGImpactShapeInterface * shape0, + const btCollisionShape * shape1, + btAlignedObjectArray<int> & collided_primitives) +{ + + btAABB boxshape; + + + if(shape0->hasBoxSet()) + { + btTransform trans1to0 = trans0.inverse(); + trans1to0 *= trans1; + + shape1->getAabb(trans1to0,boxshape.m_min,boxshape.m_max); + + shape0->getBoxSet()->boxQuery(boxshape, collided_primitives); + } + else + { + shape1->getAabb(trans1,boxshape.m_min,boxshape.m_max); + + btAABB boxshape0; + int i = shape0->getNumChildShapes(); + + while(i--) + { + shape0->getChildAabb(i,trans0,boxshape0.m_min,boxshape0.m_max); + + if(boxshape.has_collision(boxshape0)) + { + collided_primitives.push_back(i); + } + } + + } + +} + + +void btGImpactCollisionAlgorithm::collide_gjk_triangles(const btCollisionObjectWrapper * body0Wrap, + const btCollisionObjectWrapper * body1Wrap, + const btGImpactMeshShapePart * shape0, + const btGImpactMeshShapePart * shape1, + const int * pairs, int pair_count) +{ + btTriangleShapeEx tri0; + btTriangleShapeEx tri1; + + shape0->lockChildShapes(); + shape1->lockChildShapes(); + + const int * pair_pointer = pairs; + + while(pair_count--) + { + + m_triface0 = *(pair_pointer); + m_triface1 = *(pair_pointer+1); + pair_pointer+=2; + + + + shape0->getBulletTriangle(m_triface0,tri0); + shape1->getBulletTriangle(m_triface1,tri1); + + + //collide two convex shapes + if(tri0.overlap_test_conservative(tri1)) + { + convex_vs_convex_collision(body0Wrap,body1Wrap,&tri0,&tri1); + } + + } + + shape0->unlockChildShapes(); + shape1->unlockChildShapes(); +} + +void btGImpactCollisionAlgorithm::collide_sat_triangles(const btCollisionObjectWrapper* body0Wrap, + const btCollisionObjectWrapper* body1Wrap, + const btGImpactMeshShapePart * shape0, + const btGImpactMeshShapePart * shape1, + const int * pairs, int pair_count) +{ + btTransform orgtrans0 = body0Wrap->getWorldTransform(); + btTransform orgtrans1 = body1Wrap->getWorldTransform(); + + btPrimitiveTriangle ptri0; + btPrimitiveTriangle ptri1; + GIM_TRIANGLE_CONTACT contact_data; + + shape0->lockChildShapes(); + shape1->lockChildShapes(); + + const int * pair_pointer = pairs; + + while(pair_count--) + { + + m_triface0 = *(pair_pointer); + m_triface1 = *(pair_pointer+1); + pair_pointer+=2; + + + shape0->getPrimitiveTriangle(m_triface0,ptri0); + shape1->getPrimitiveTriangle(m_triface1,ptri1); + + #ifdef TRI_COLLISION_PROFILING + bt_begin_gim02_tri_time(); + #endif + + ptri0.applyTransform(orgtrans0); + ptri1.applyTransform(orgtrans1); + + + //build planes + ptri0.buildTriPlane(); + ptri1.buildTriPlane(); + // test conservative + + + + if(ptri0.overlap_test_conservative(ptri1)) + { + if(ptri0.find_triangle_collision_clip_method(ptri1,contact_data)) + { + + int j = contact_data.m_point_count; + while(j--) + { + + addContactPoint(body0Wrap, body1Wrap, + contact_data.m_points[j], + contact_data.m_separating_normal, + -contact_data.m_penetration_depth); + } + } + } + + #ifdef TRI_COLLISION_PROFILING + bt_end_gim02_tri_time(); + #endif + + } + + shape0->unlockChildShapes(); + shape1->unlockChildShapes(); + +} + + +void btGImpactCollisionAlgorithm::gimpact_vs_gimpact( + const btCollisionObjectWrapper* body0Wrap, + const btCollisionObjectWrapper * body1Wrap, + const btGImpactShapeInterface * shape0, + const btGImpactShapeInterface * shape1) +{ + + if(shape0->getGImpactShapeType()==CONST_GIMPACT_TRIMESH_SHAPE) + { + const btGImpactMeshShape * meshshape0 = static_cast<const btGImpactMeshShape *>(shape0); + m_part0 = meshshape0->getMeshPartCount(); + + while(m_part0--) + { + gimpact_vs_gimpact(body0Wrap,body1Wrap,meshshape0->getMeshPart(m_part0),shape1); + } + + return; + } + + if(shape1->getGImpactShapeType()==CONST_GIMPACT_TRIMESH_SHAPE) + { + const btGImpactMeshShape * meshshape1 = static_cast<const btGImpactMeshShape *>(shape1); + m_part1 = meshshape1->getMeshPartCount(); + + while(m_part1--) + { + + gimpact_vs_gimpact(body0Wrap,body1Wrap,shape0,meshshape1->getMeshPart(m_part1)); + + } + + return; + } + + + btTransform orgtrans0 = body0Wrap->getWorldTransform(); + btTransform orgtrans1 = body1Wrap->getWorldTransform(); + + btPairSet pairset; + + gimpact_vs_gimpact_find_pairs(orgtrans0,orgtrans1,shape0,shape1,pairset); + + if(pairset.size()== 0) return; + + if(shape0->getGImpactShapeType() == CONST_GIMPACT_TRIMESH_SHAPE_PART && + shape1->getGImpactShapeType() == CONST_GIMPACT_TRIMESH_SHAPE_PART) + { + const btGImpactMeshShapePart * shapepart0 = static_cast<const btGImpactMeshShapePart * >(shape0); + const btGImpactMeshShapePart * shapepart1 = static_cast<const btGImpactMeshShapePart * >(shape1); + //specialized function + #ifdef BULLET_TRIANGLE_COLLISION + collide_gjk_triangles(body0Wrap,body1Wrap,shapepart0,shapepart1,&pairset[0].m_index1,pairset.size()); + #else + collide_sat_triangles(body0Wrap,body1Wrap,shapepart0,shapepart1,&pairset[0].m_index1,pairset.size()); + #endif + + return; + } + + //general function + + shape0->lockChildShapes(); + shape1->lockChildShapes(); + + GIM_ShapeRetriever retriever0(shape0); + GIM_ShapeRetriever retriever1(shape1); + + bool child_has_transform0 = shape0->childrenHasTransform(); + bool child_has_transform1 = shape1->childrenHasTransform(); + + int i = pairset.size(); + while(i--) + { + GIM_PAIR * pair = &pairset[i]; + m_triface0 = pair->m_index1; + m_triface1 = pair->m_index2; + const btCollisionShape * colshape0 = retriever0.getChildShape(m_triface0); + const btCollisionShape * colshape1 = retriever1.getChildShape(m_triface1); + + btTransform tr0 = body0Wrap->getWorldTransform(); + btTransform tr1 = body1Wrap->getWorldTransform(); + + if(child_has_transform0) + { + tr0 = orgtrans0*shape0->getChildTransform(m_triface0); + } + + if(child_has_transform1) + { + tr1 = orgtrans1*shape1->getChildTransform(m_triface1); + } + + btCollisionObjectWrapper ob0(body0Wrap,colshape0,body0Wrap->getCollisionObject(),tr0,m_part0,m_triface0); + btCollisionObjectWrapper ob1(body1Wrap,colshape1,body1Wrap->getCollisionObject(),tr1,m_part1,m_triface1); + + //collide two convex shapes + convex_vs_convex_collision(&ob0,&ob1,colshape0,colshape1); + } + + shape0->unlockChildShapes(); + shape1->unlockChildShapes(); +} + +void btGImpactCollisionAlgorithm::gimpact_vs_shape(const btCollisionObjectWrapper* body0Wrap, + const btCollisionObjectWrapper * body1Wrap, + const btGImpactShapeInterface * shape0, + const btCollisionShape * shape1,bool swapped) +{ + if(shape0->getGImpactShapeType()==CONST_GIMPACT_TRIMESH_SHAPE) + { + const btGImpactMeshShape * meshshape0 = static_cast<const btGImpactMeshShape *>(shape0); + int& part = swapped ? m_part1 : m_part0; + part = meshshape0->getMeshPartCount(); + + while(part--) + { + + gimpact_vs_shape(body0Wrap, + body1Wrap, + meshshape0->getMeshPart(part), + shape1,swapped); + + } + + return; + } + + #ifdef GIMPACT_VS_PLANE_COLLISION + if(shape0->getGImpactShapeType() == CONST_GIMPACT_TRIMESH_SHAPE_PART && + shape1->getShapeType() == STATIC_PLANE_PROXYTYPE) + { + const btGImpactMeshShapePart * shapepart = static_cast<const btGImpactMeshShapePart *>(shape0); + const btStaticPlaneShape * planeshape = static_cast<const btStaticPlaneShape * >(shape1); + gimpacttrimeshpart_vs_plane_collision(body0Wrap,body1Wrap,shapepart,planeshape,swapped); + return; + } + + #endif + + + + if(shape1->isCompound()) + { + const btCompoundShape * compoundshape = static_cast<const btCompoundShape *>(shape1); + gimpact_vs_compoundshape(body0Wrap,body1Wrap,shape0,compoundshape,swapped); + return; + } + else if(shape1->isConcave()) + { + const btConcaveShape * concaveshape = static_cast<const btConcaveShape *>(shape1); + gimpact_vs_concave(body0Wrap,body1Wrap,shape0,concaveshape,swapped); + return; + } + + + btTransform orgtrans0 = body0Wrap->getWorldTransform(); + + btTransform orgtrans1 = body1Wrap->getWorldTransform(); + + btAlignedObjectArray<int> collided_results; + + gimpact_vs_shape_find_pairs(orgtrans0,orgtrans1,shape0,shape1,collided_results); + + if(collided_results.size() == 0) return; + + + shape0->lockChildShapes(); + + GIM_ShapeRetriever retriever0(shape0); + + + bool child_has_transform0 = shape0->childrenHasTransform(); + + + int i = collided_results.size(); + + while(i--) + { + int child_index = collided_results[i]; + if(swapped) + m_triface1 = child_index; + else + m_triface0 = child_index; + + const btCollisionShape * colshape0 = retriever0.getChildShape(child_index); + + btTransform tr0 = body0Wrap->getWorldTransform(); + + if(child_has_transform0) + { + tr0 = orgtrans0*shape0->getChildTransform(child_index); + } + + btCollisionObjectWrapper ob0(body0Wrap,colshape0,body0Wrap->getCollisionObject(),body0Wrap->getWorldTransform(),m_part0,m_triface0); + const btCollisionObjectWrapper* prevObj0 = m_resultOut->getBody0Wrap(); + + if (m_resultOut->getBody0Wrap()->getCollisionObject()==ob0.getCollisionObject()) + { + m_resultOut->setBody0Wrap(&ob0); + } else + { + m_resultOut->setBody1Wrap(&ob0); + } + + //collide two shapes + if(swapped) + { + + shape_vs_shape_collision(body1Wrap,&ob0,shape1,colshape0); + } + else + { + + shape_vs_shape_collision(&ob0,body1Wrap,colshape0,shape1); + } + m_resultOut->setBody0Wrap(prevObj0); + + } + + shape0->unlockChildShapes(); + +} + +void btGImpactCollisionAlgorithm::gimpact_vs_compoundshape(const btCollisionObjectWrapper* body0Wrap, + const btCollisionObjectWrapper* body1Wrap, + const btGImpactShapeInterface * shape0, + const btCompoundShape * shape1,bool swapped) +{ + btTransform orgtrans1 = body1Wrap->getWorldTransform(); + + int i = shape1->getNumChildShapes(); + while(i--) + { + + const btCollisionShape * colshape1 = shape1->getChildShape(i); + btTransform childtrans1 = orgtrans1*shape1->getChildTransform(i); + + btCollisionObjectWrapper ob1(body1Wrap,colshape1,body1Wrap->getCollisionObject(),childtrans1,-1,i); + + const btCollisionObjectWrapper* tmp = 0; + if (m_resultOut->getBody0Wrap()->getCollisionObject()==ob1.getCollisionObject()) + { + tmp = m_resultOut->getBody0Wrap(); + m_resultOut->setBody0Wrap(&ob1); + } else + { + tmp = m_resultOut->getBody1Wrap(); + m_resultOut->setBody1Wrap(&ob1); + } + //collide child shape + gimpact_vs_shape(body0Wrap, &ob1, + shape0,colshape1,swapped); + + if (m_resultOut->getBody0Wrap()->getCollisionObject()==ob1.getCollisionObject()) + { + m_resultOut->setBody0Wrap(tmp); + } else + { + m_resultOut->setBody1Wrap(tmp); + } + } +} + +void btGImpactCollisionAlgorithm::gimpacttrimeshpart_vs_plane_collision( + const btCollisionObjectWrapper * body0Wrap, + const btCollisionObjectWrapper * body1Wrap, + const btGImpactMeshShapePart * shape0, + const btStaticPlaneShape * shape1,bool swapped) +{ + + + btTransform orgtrans0 = body0Wrap->getWorldTransform(); + btTransform orgtrans1 = body1Wrap->getWorldTransform(); + + const btPlaneShape * planeshape = static_cast<const btPlaneShape *>(shape1); + btVector4 plane; + planeshape->get_plane_equation_transformed(orgtrans1,plane); + + //test box against plane + + btAABB tribox; + shape0->getAabb(orgtrans0,tribox.m_min,tribox.m_max); + tribox.increment_margin(planeshape->getMargin()); + + if( tribox.plane_classify(plane)!= BT_CONST_COLLIDE_PLANE) return; + + shape0->lockChildShapes(); + + btScalar margin = shape0->getMargin() + planeshape->getMargin(); + + btVector3 vertex; + int vi = shape0->getVertexCount(); + while(vi--) + { + shape0->getVertex(vi,vertex); + vertex = orgtrans0(vertex); + + btScalar distance = vertex.dot(plane) - plane[3] - margin; + + if(distance<0.0)//add contact + { + if(swapped) + { + addContactPoint(body1Wrap, body0Wrap, + vertex, + -plane, + distance); + } + else + { + addContactPoint(body0Wrap, body1Wrap, + vertex, + plane, + distance); + } + } + } + + shape0->unlockChildShapes(); +} + + + + +class btGImpactTriangleCallback: public btTriangleCallback +{ +public: + btGImpactCollisionAlgorithm * algorithm; + const btCollisionObjectWrapper * body0Wrap; + const btCollisionObjectWrapper * body1Wrap; + const btGImpactShapeInterface * gimpactshape0; + bool swapped; + btScalar margin; + + virtual void processTriangle(btVector3* triangle, int partId, int triangleIndex) + { + btTriangleShapeEx tri1(triangle[0],triangle[1],triangle[2]); + tri1.setMargin(margin); + if(swapped) + { + algorithm->setPart0(partId); + algorithm->setFace0(triangleIndex); + } + else + { + algorithm->setPart1(partId); + algorithm->setFace1(triangleIndex); + } + + btCollisionObjectWrapper ob1Wrap(body1Wrap,&tri1,body1Wrap->getCollisionObject(),body1Wrap->getWorldTransform(),partId,triangleIndex); + const btCollisionObjectWrapper * tmp = 0; + + if (algorithm->internalGetResultOut()->getBody0Wrap()->getCollisionObject()==ob1Wrap.getCollisionObject()) + { + tmp = algorithm->internalGetResultOut()->getBody0Wrap(); + algorithm->internalGetResultOut()->setBody0Wrap(&ob1Wrap); + } else + { + tmp = algorithm->internalGetResultOut()->getBody1Wrap(); + algorithm->internalGetResultOut()->setBody1Wrap(&ob1Wrap); + } + + algorithm->gimpact_vs_shape( + body0Wrap,&ob1Wrap,gimpactshape0,&tri1,swapped); + + if (algorithm->internalGetResultOut()->getBody0Wrap()->getCollisionObject()==ob1Wrap.getCollisionObject()) + { + algorithm->internalGetResultOut()->setBody0Wrap(tmp); + } else + { + algorithm->internalGetResultOut()->setBody1Wrap(tmp); + } + + } +}; + + + + +void btGImpactCollisionAlgorithm::gimpact_vs_concave( + const btCollisionObjectWrapper* body0Wrap, + const btCollisionObjectWrapper * body1Wrap, + const btGImpactShapeInterface * shape0, + const btConcaveShape * shape1,bool swapped) +{ + //create the callback + btGImpactTriangleCallback tricallback; + tricallback.algorithm = this; + tricallback.body0Wrap = body0Wrap; + tricallback.body1Wrap = body1Wrap; + tricallback.gimpactshape0 = shape0; + tricallback.swapped = swapped; + tricallback.margin = shape1->getMargin(); + + //getting the trimesh AABB + btTransform gimpactInConcaveSpace; + + gimpactInConcaveSpace = body1Wrap->getWorldTransform().inverse() * body0Wrap->getWorldTransform(); + + btVector3 minAABB,maxAABB; + shape0->getAabb(gimpactInConcaveSpace,minAABB,maxAABB); + + shape1->processAllTriangles(&tricallback,minAABB,maxAABB); + +} + + + +void btGImpactCollisionAlgorithm::processCollision (const btCollisionObjectWrapper* body0Wrap,const btCollisionObjectWrapper* body1Wrap,const btDispatcherInfo& dispatchInfo,btManifoldResult* resultOut) +{ + clearCache(); + + m_resultOut = resultOut; + m_dispatchInfo = &dispatchInfo; + const btGImpactShapeInterface * gimpactshape0; + const btGImpactShapeInterface * gimpactshape1; + + if (body0Wrap->getCollisionShape()->getShapeType()==GIMPACT_SHAPE_PROXYTYPE) + { + gimpactshape0 = static_cast<const btGImpactShapeInterface *>(body0Wrap->getCollisionShape()); + + if( body1Wrap->getCollisionShape()->getShapeType()==GIMPACT_SHAPE_PROXYTYPE ) + { + gimpactshape1 = static_cast<const btGImpactShapeInterface *>(body1Wrap->getCollisionShape()); + + gimpact_vs_gimpact(body0Wrap,body1Wrap,gimpactshape0,gimpactshape1); + } + else + { + gimpact_vs_shape(body0Wrap,body1Wrap,gimpactshape0,body1Wrap->getCollisionShape(),false); + } + + } + else if (body1Wrap->getCollisionShape()->getShapeType()==GIMPACT_SHAPE_PROXYTYPE ) + { + gimpactshape1 = static_cast<const btGImpactShapeInterface *>(body1Wrap->getCollisionShape()); + + gimpact_vs_shape(body1Wrap,body0Wrap,gimpactshape1,body0Wrap->getCollisionShape(),true); + } +} + + +btScalar btGImpactCollisionAlgorithm::calculateTimeOfImpact(btCollisionObject* body0,btCollisionObject* body1,const btDispatcherInfo& dispatchInfo,btManifoldResult* resultOut) +{ + return 1.f; + +} + +///////////////////////////////////// REGISTERING ALGORITHM ////////////////////////////////////////////// + + + +//! Use this function for register the algorithm externally +void btGImpactCollisionAlgorithm::registerAlgorithm(btCollisionDispatcher * dispatcher) +{ + + static btGImpactCollisionAlgorithm::CreateFunc s_gimpact_cf; + + int i; + + for ( i = 0;i < MAX_BROADPHASE_COLLISION_TYPES ;i++ ) + { + dispatcher->registerCollisionCreateFunc(GIMPACT_SHAPE_PROXYTYPE,i ,&s_gimpact_cf); + } + + for ( i = 0;i < MAX_BROADPHASE_COLLISION_TYPES ;i++ ) + { + dispatcher->registerCollisionCreateFunc(i,GIMPACT_SHAPE_PROXYTYPE ,&s_gimpact_cf); + } + +} |