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248 lines
9.6 KiB
C++
248 lines
9.6 KiB
C++
/*
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Bullet Continuous Collision Detection and Physics Library
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Copyright (c) 2019 Google Inc. http://bulletphysics.org
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This software is provided 'as-is', without any express or implied warranty.
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In no event will the authors be held liable for any damages arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it freely,
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subject to the following restrictions:
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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.
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2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#ifndef BT_MULTIBODY_INPLACE_SOLVER_ISLAND_CALLBACK_H
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#define BT_MULTIBODY_INPLACE_SOLVER_ISLAND_CALLBACK_H
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#include "BulletDynamics/Featherstone/btMultiBodyConstraintSolver.h"
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#include "BulletCollision/CollisionDispatch/btSimulationIslandManager.h"
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#include "BulletDynamics/Featherstone/btMultiBodyDynamicsWorld.h"
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#include "btMultiBodyConstraintSolver.h"
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SIMD_FORCE_INLINE int btGetConstraintIslandId2(const btTypedConstraint* lhs)
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{
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int islandId;
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const btCollisionObject& rcolObj0 = lhs->getRigidBodyA();
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const btCollisionObject& rcolObj1 = lhs->getRigidBodyB();
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islandId = rcolObj0.getIslandTag() >= 0 ? rcolObj0.getIslandTag() : rcolObj1.getIslandTag();
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return islandId;
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}
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class btSortConstraintOnIslandPredicate2
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{
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public:
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bool operator()(const btTypedConstraint* lhs, const btTypedConstraint* rhs) const
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{
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int rIslandId0, lIslandId0;
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rIslandId0 = btGetConstraintIslandId2(rhs);
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lIslandId0 = btGetConstraintIslandId2(lhs);
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return lIslandId0 < rIslandId0;
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}
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};
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SIMD_FORCE_INLINE int btGetMultiBodyConstraintIslandId(const btMultiBodyConstraint* lhs)
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{
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int islandId;
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int islandTagA = lhs->getIslandIdA();
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int islandTagB = lhs->getIslandIdB();
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islandId = islandTagA >= 0 ? islandTagA : islandTagB;
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return islandId;
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}
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class btSortMultiBodyConstraintOnIslandPredicate
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{
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public:
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bool operator()(const btMultiBodyConstraint* lhs, const btMultiBodyConstraint* rhs) const
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{
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int rIslandId0, lIslandId0;
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rIslandId0 = btGetMultiBodyConstraintIslandId(rhs);
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lIslandId0 = btGetMultiBodyConstraintIslandId(lhs);
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return lIslandId0 < rIslandId0;
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}
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};
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struct MultiBodyInplaceSolverIslandCallback : public btSimulationIslandManager::IslandCallback
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{
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btContactSolverInfo* m_solverInfo;
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btMultiBodyConstraintSolver* m_solver;
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btMultiBodyConstraint** m_multiBodySortedConstraints;
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int m_numMultiBodyConstraints;
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btTypedConstraint** m_sortedConstraints;
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int m_numConstraints;
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btIDebugDraw* m_debugDrawer;
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btDispatcher* m_dispatcher;
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btAlignedObjectArray<btCollisionObject*> m_bodies;
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btAlignedObjectArray<btCollisionObject*> m_softBodies;
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btAlignedObjectArray<btPersistentManifold*> m_manifolds;
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btAlignedObjectArray<btTypedConstraint*> m_constraints;
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btAlignedObjectArray<btMultiBodyConstraint*> m_multiBodyConstraints;
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btAlignedObjectArray<btSolverAnalyticsData> m_islandAnalyticsData;
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MultiBodyInplaceSolverIslandCallback(btMultiBodyConstraintSolver* solver,
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btDispatcher* dispatcher)
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: m_solverInfo(NULL),
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m_solver(solver),
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m_multiBodySortedConstraints(NULL),
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m_numConstraints(0),
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m_debugDrawer(NULL),
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m_dispatcher(dispatcher)
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{
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}
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MultiBodyInplaceSolverIslandCallback& operator=(const MultiBodyInplaceSolverIslandCallback& other)
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{
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btAssert(0);
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(void)other;
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return *this;
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}
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SIMD_FORCE_INLINE virtual void setup(btContactSolverInfo* solverInfo, btTypedConstraint** sortedConstraints, int numConstraints, btMultiBodyConstraint** sortedMultiBodyConstraints, int numMultiBodyConstraints, btIDebugDraw* debugDrawer)
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{
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m_islandAnalyticsData.clear();
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btAssert(solverInfo);
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m_solverInfo = solverInfo;
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m_multiBodySortedConstraints = sortedMultiBodyConstraints;
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m_numMultiBodyConstraints = numMultiBodyConstraints;
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m_sortedConstraints = sortedConstraints;
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m_numConstraints = numConstraints;
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m_debugDrawer = debugDrawer;
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m_bodies.resize(0);
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m_manifolds.resize(0);
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m_constraints.resize(0);
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m_multiBodyConstraints.resize(0);
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}
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void setMultiBodyConstraintSolver(btMultiBodyConstraintSolver* solver)
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{
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m_solver = solver;
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}
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virtual void processIsland(btCollisionObject** bodies, int numBodies, btPersistentManifold** manifolds, int numManifolds, int islandId)
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{
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if (islandId < 0)
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{
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///we don't split islands, so all constraints/contact manifolds/bodies are passed into the solver regardless the island id
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m_solver->solveMultiBodyGroup(bodies, numBodies, manifolds, numManifolds, m_sortedConstraints, m_numConstraints, &m_multiBodySortedConstraints[0], m_numConstraints, *m_solverInfo, m_debugDrawer, m_dispatcher);
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if (m_solverInfo->m_reportSolverAnalytics&1)
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{
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m_solver->m_analyticsData.m_islandId = islandId;
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m_islandAnalyticsData.push_back(m_solver->m_analyticsData);
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}
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}
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else
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{
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//also add all non-contact constraints/joints for this island
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btTypedConstraint** startConstraint = 0;
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btMultiBodyConstraint** startMultiBodyConstraint = 0;
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int numCurConstraints = 0;
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int numCurMultiBodyConstraints = 0;
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int i;
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//find the first constraint for this island
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for (i = 0; i < m_numConstraints; i++)
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{
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if (btGetConstraintIslandId2(m_sortedConstraints[i]) == islandId)
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{
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startConstraint = &m_sortedConstraints[i];
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break;
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}
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}
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//count the number of constraints in this island
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for (; i < m_numConstraints; i++)
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{
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if (btGetConstraintIslandId2(m_sortedConstraints[i]) == islandId)
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{
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numCurConstraints++;
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}
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}
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for (i = 0; i < m_numMultiBodyConstraints; i++)
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{
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if (btGetMultiBodyConstraintIslandId(m_multiBodySortedConstraints[i]) == islandId)
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{
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startMultiBodyConstraint = &m_multiBodySortedConstraints[i];
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break;
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}
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}
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//count the number of multi body constraints in this island
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for (; i < m_numMultiBodyConstraints; i++)
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{
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if (btGetMultiBodyConstraintIslandId(m_multiBodySortedConstraints[i]) == islandId)
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{
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numCurMultiBodyConstraints++;
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}
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}
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//if (m_solverInfo->m_minimumSolverBatchSize<=1)
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//{
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// m_solver->solveGroup( bodies,numBodies,manifolds, numManifolds,startConstraint,numCurConstraints,*m_solverInfo,m_debugDrawer,m_dispatcher);
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//} else
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{
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for (i = 0; i < numBodies; i++)
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{
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bool isSoftBodyType = (bodies[i]->getInternalType() & btCollisionObject::CO_SOFT_BODY);
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if (!isSoftBodyType)
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{
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m_bodies.push_back(bodies[i]);
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}
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else
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{
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m_softBodies.push_back(bodies[i]);
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}
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}
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for (i = 0; i < numManifolds; i++)
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m_manifolds.push_back(manifolds[i]);
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for (i = 0; i < numCurConstraints; i++)
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m_constraints.push_back(startConstraint[i]);
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for (i = 0; i < numCurMultiBodyConstraints; i++)
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m_multiBodyConstraints.push_back(startMultiBodyConstraint[i]);
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if ((m_multiBodyConstraints.size() + m_constraints.size() + m_manifolds.size()) > m_solverInfo->m_minimumSolverBatchSize)
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{
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processConstraints(islandId);
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}
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else
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{
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//printf("deferred\n");
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}
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}
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}
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}
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virtual void processConstraints(int islandId=-1)
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{
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btCollisionObject** bodies = m_bodies.size() ? &m_bodies[0] : 0;
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btPersistentManifold** manifold = m_manifolds.size() ? &m_manifolds[0] : 0;
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btTypedConstraint** constraints = m_constraints.size() ? &m_constraints[0] : 0;
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btMultiBodyConstraint** multiBodyConstraints = m_multiBodyConstraints.size() ? &m_multiBodyConstraints[0] : 0;
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//printf("mb contacts = %d, mb constraints = %d\n", mbContacts, m_multiBodyConstraints.size());
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m_solver->solveMultiBodyGroup(bodies, m_bodies.size(), manifold, m_manifolds.size(), constraints, m_constraints.size(), multiBodyConstraints, m_multiBodyConstraints.size(), *m_solverInfo, m_debugDrawer, m_dispatcher);
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if (m_bodies.size() && (m_solverInfo->m_reportSolverAnalytics&1))
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{
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m_solver->m_analyticsData.m_islandId = islandId;
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m_islandAnalyticsData.push_back(m_solver->m_analyticsData);
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}
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m_bodies.resize(0);
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m_softBodies.resize(0);
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m_manifolds.resize(0);
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m_constraints.resize(0);
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m_multiBodyConstraints.resize(0);
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}
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};
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#endif /*BT_MULTIBODY_INPLACE_SOLVER_ISLAND_CALLBACK_H */
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