void btDiscreteDynamicsWorld::debugDrawWorld()
{
BT_PROFILE("debugDrawWorld");
if (getDebugDrawer() && getDebugDrawer()->getDebugMode() & btIDebugDraw::DBG_DrawContactPoints)
{
int numManifolds = getDispatcher()->getNumManifolds();
btVector3 color(0,0,0);
for (int i=0;i<numManifolds;i++)
{
btPersistentManifold* contactManifold = getDispatcher()->getManifoldByIndexInternal(i);
//btCollisionObject* obA = static_cast<btCollisionObject*>(contactManifold->getBody0());
//btCollisionObject* obB = static_cast<btCollisionObject*>(contactManifold->getBody1());
int numContacts = contactManifold->getNumContacts();
for (int j=0;j<numContacts;j++)
{
btManifoldPoint& cp = contactManifold->getContactPoint(j);
getDebugDrawer()->drawContactPoint(cp.m_positionWorldOnB,cp.m_normalWorldOnB,cp.getDistance(),cp.getLifeTime(),color);
}
}
}
bool drawConstraints = false;
if (getDebugDrawer())
{
int mode = getDebugDrawer()->getDebugMode();
if(mode & (btIDebugDraw::DBG_DrawConstraints | btIDebugDraw::DBG_DrawConstraintLimits))
{
drawConstraints = true;
}
}
if(drawConstraints)
{
for(int i = getNumConstraints()-1; i>=0 ;i--)
{
btTypedConstraint* constraint = getConstraint(i);
debugDrawConstraint(constraint);
}
}
if (getDebugDrawer() && getDebugDrawer()->getDebugMode() & (btIDebugDraw::DBG_DrawWireframe | btIDebugDraw::DBG_DrawAabb))
{
int i;
for ( i=0;i<m_collisionObjects.size();i++)
{
btCollisionObject* colObj = m_collisionObjects[i];
if (getDebugDrawer() && getDebugDrawer()->getDebugMode() & btIDebugDraw::DBG_DrawWireframe)
{
btVector3 color(btScalar(255.),btScalar(255.),btScalar(255.));
switch(colObj->getActivationState())
{
case ACTIVE_TAG:
color = btVector3(btScalar(255.),btScalar(255.),btScalar(255.)); break;
case ISLAND_SLEEPING:
color = btVector3(btScalar(0.),btScalar(255.),btScalar(0.));break;
case WANTS_DEACTIVATION:
color = btVector3(btScalar(0.),btScalar(255.),btScalar(255.));break;
case DISABLE_DEACTIVATION:
color = btVector3(btScalar(255.),btScalar(0.),btScalar(0.));break;
case DISABLE_SIMULATION:
color = btVector3(btScalar(255.),btScalar(255.),btScalar(0.));break;
default:
{
color = btVector3(btScalar(255.),btScalar(0.),btScalar(0.));
}
};
debugDrawObject(colObj->getWorldTransform(),colObj->getCollisionShape(),color);
}
if (m_debugDrawer && (m_debugDrawer->getDebugMode() & btIDebugDraw::DBG_DrawAabb))
{
btVector3 minAabb,maxAabb;
btVector3 colorvec(1,0,0);
colObj->getCollisionShape()->getAabb(colObj->getWorldTransform(), minAabb,maxAabb);
m_debugDrawer->drawAabb(minAabb,maxAabb,colorvec);
}
}
if (getDebugDrawer() && getDebugDrawer()->getDebugMode())
{
for (i=0;i<m_actions.size();i++)
{
m_actions[i]->debugDraw(m_debugDrawer);
}
}
}
}
void btDiscreteDynamicsWorld::createPredictiveContacts(btScalar timeStep)
{
BT_PROFILE("createPredictiveContacts");
{
BT_PROFILE("release predictive contact manifolds");
for (int i=0;i<m_predictiveManifolds.size();i++)
{
btPersistentManifold* manifold = m_predictiveManifolds[i];
this->m_dispatcher1->releaseManifold(manifold);
}
m_predictiveManifolds.clear();
}
btTransform predictedTrans;
for ( int i=0;i<m_nonStaticRigidBodies.size();i++)
{
btRigidBody* body = m_nonStaticRigidBodies[i];
body->setHitFraction(1.f);
if (body->isActive() && (!body->isStaticOrKinematicObject()))
{
body->predictIntegratedTransform(timeStep, predictedTrans);
btScalar squareMotion = (predictedTrans.getOrigin()-body->getWorldTransform().getOrigin()).length2();
if (getDispatchInfo().m_useContinuous && body->getCcdSquareMotionThreshold() && body->getCcdSquareMotionThreshold() < squareMotion)
{
BT_PROFILE("predictive convexSweepTest");
if (body->getCollisionShape()->isConvex())
{
gNumClampedCcdMotions++;
#ifdef PREDICTIVE_CONTACT_USE_STATIC_ONLY
class StaticOnlyCallback : public btClosestNotMeConvexResultCallback
{
public:
StaticOnlyCallback (btCollisionObject* me,const btVector3& fromA,const btVector3& toA,btOverlappingPairCache* pairCache,btDispatcher* dispatcher) :
btClosestNotMeConvexResultCallback(me,fromA,toA,pairCache,dispatcher)
{
}
virtual bool needsCollision(btBroadphaseProxy* proxy0) const
{
btCollisionObject* otherObj = (btCollisionObject*) proxy0->m_clientObject;
if (!otherObj->isStaticOrKinematicObject())
return false;
return btClosestNotMeConvexResultCallback::needsCollision(proxy0);
}
};
StaticOnlyCallback sweepResults(body,body->getWorldTransform().getOrigin(),predictedTrans.getOrigin(),getBroadphase()->getOverlappingPairCache(),getDispatcher());
#else
btClosestNotMeConvexResultCallback sweepResults(body,body->getWorldTransform().getOrigin(),predictedTrans.getOrigin(),getBroadphase()->getOverlappingPairCache(),getDispatcher());
#endif
//btConvexShape* convexShape = static_cast<btConvexShape*>(body->getCollisionShape());
btSphereShape tmpSphere(body->getCcdSweptSphereRadius());//btConvexShape* convexShape = static_cast<btConvexShape*>(body->getCollisionShape());
sweepResults.m_allowedPenetration=getDispatchInfo().m_allowedCcdPenetration;
sweepResults.m_collisionFilterGroup = body->getBroadphaseProxy()->m_collisionFilterGroup;
sweepResults.m_collisionFilterMask = body->getBroadphaseProxy()->m_collisionFilterMask;
btTransform modifiedPredictedTrans = predictedTrans;
modifiedPredictedTrans.setBasis(body->getWorldTransform().getBasis());
convexSweepTest(&tmpSphere,body->getWorldTransform(),modifiedPredictedTrans,sweepResults);
if (sweepResults.hasHit() && (sweepResults.m_closestHitFraction < 1.f))
{
btVector3 distVec = (predictedTrans.getOrigin()-body->getWorldTransform().getOrigin())*sweepResults.m_closestHitFraction;
btScalar distance = distVec.dot(-sweepResults.m_hitNormalWorld);
btPersistentManifold* manifold = m_dispatcher1->getNewManifold(body,sweepResults.m_hitCollisionObject);
m_predictiveManifolds.push_back(manifold);
btVector3 worldPointB = body->getWorldTransform().getOrigin()+distVec;
btVector3 localPointB = sweepResults.m_hitCollisionObject->getWorldTransform().inverse()*worldPointB;
btManifoldPoint newPoint(btVector3(0,0,0), localPointB,sweepResults.m_hitNormalWorld,distance);
bool isPredictive = true;
int index = manifold->addManifoldPoint(newPoint, isPredictive);
btManifoldPoint& pt = manifold->getContactPoint(index);
pt.m_combinedRestitution = 0;
pt.m_combinedFriction = btManifoldResult::calculateCombinedFriction(body,sweepResults.m_hitCollisionObject);
pt.m_positionWorldOnA = body->getWorldTransform().getOrigin();
pt.m_positionWorldOnB = worldPointB;
}
}
}
}
}
}
void OpenGLExampleBrowser::update(float deltaTime)
{
assert(glGetError()==GL_NO_ERROR);
s_instancingRenderer->init();
DrawGridData dg;
dg.upAxis = s_app->getUpAxis();
{
BT_PROFILE("Update Camera and Light");
s_instancingRenderer->updateCamera(dg.upAxis);
}
if (renderGrid)
{
BT_PROFILE("Draw Grid");
glPolygonOffset(3.0, 3);
glEnable(GL_POLYGON_OFFSET_FILL);
s_app->drawGrid(dg);
}
static int frameCount = 0;
frameCount++;
if (0)
{
BT_PROFILE("Draw frame counter");
char bla[1024];
sprintf(bla,"Frame %d", frameCount);
s_app->drawText(bla,10,10);
}
if (sCurrentDemo)
{
if (!pauseSimulation)
{
//printf("---------------------------------------------------\n");
//printf("Framecount = %d\n",frameCount);
if (gPngFileName)
{
static int skip = 0;
skip++;
if (skip>4)
{
skip=0;
//printf("gPngFileName=%s\n",gPngFileName);
static int s_frameCount = 100;
sprintf(staticPngFileName,"%s%d.png",gPngFileName,s_frameCount++);
//b3Printf("Made screenshot %s",staticPngFileName);
s_app->dumpNextFrameToPng(staticPngFileName);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
}
if (gFixedTimeStep>0)
{
sCurrentDemo->stepSimulation(gFixedTimeStep);
} else
{
sCurrentDemo->stepSimulation(deltaTime);//1./60.f);
}
}
if (renderVisualGeometry && ((gDebugDrawFlags&btIDebugDraw::DBG_DrawWireframe)==0))
{
if (visualWireframe)
{
glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
}
BT_PROFILE("Render Scene");
sCurrentDemo->renderScene();
}
{
glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
sCurrentDemo->physicsDebugDraw(gDebugDrawFlags);
}
}
{
if (s_guiHelper && s_guiHelper->getRenderInterface() && s_guiHelper->getRenderInterface()->getActiveCamera())
{
char msg[1024];
float camDist = s_guiHelper->getRenderInterface()->getActiveCamera()->getCameraDistance();
float pitch = s_guiHelper->getRenderInterface()->getActiveCamera()->getCameraPitch();
float yaw = s_guiHelper->getRenderInterface()->getActiveCamera()->getCameraYaw();
float camTarget[3];
s_guiHelper->getRenderInterface()->getActiveCamera()->getCameraTargetPosition(camTarget);
sprintf(msg,"dist=%f, pitch=%f, yaw=%f,target=%f,%f,%f", camDist,pitch,yaw,camTarget[0],camTarget[1],camTarget[2]);
gui->setStatusBarMessage(msg, true);
}
}
static int toggle = 1;
if (renderGui)
{
if (!pauseSimulation)
processProfileData(s_profWindow,false);
if (sUseOpenGL2)
{
saveOpenGLState(s_instancingRenderer->getScreenWidth(),s_instancingRenderer->getScreenHeight());
}
BT_PROFILE("Draw Gwen GUI");
gui->draw(s_instancingRenderer->getScreenWidth(),s_instancingRenderer->getScreenHeight());
if (sUseOpenGL2)
{
restoreOpenGLState();
}
}
toggle=1-toggle;
{
BT_PROFILE("Sync Parameters");
s_parameterInterface->syncParameters();
}
{
BT_PROFILE("Swap Buffers");
s_app->swapBuffer();
}
gui->forceUpdateScrollBars();
}
void btMultiBodyDynamicsWorld::calculateSimulationIslands()
{
BT_PROFILE("calculateSimulationIslands");
getSimulationIslandManager()->updateActivationState(getCollisionWorld(),getCollisionWorld()->getDispatcher());
{
//merge islands based on speculative contact manifolds too
for (int i=0;i<this->m_predictiveManifolds.size();i++)
{
btPersistentManifold* manifold = m_predictiveManifolds[i];
const btCollisionObject* colObj0 = manifold->getBody0();
const btCollisionObject* colObj1 = manifold->getBody1();
if (((colObj0) && (!(colObj0)->isStaticOrKinematicObject())) &&
((colObj1) && (!(colObj1)->isStaticOrKinematicObject())))
{
getSimulationIslandManager()->getUnionFind().unite((colObj0)->getIslandTag(),(colObj1)->getIslandTag());
}
}
}
{
int i;
int numConstraints = int(m_constraints.size());
for (i=0;i< numConstraints ; i++ )
{
btTypedConstraint* constraint = m_constraints[i];
if (constraint->isEnabled())
{
const btRigidBody* colObj0 = &constraint->getRigidBodyA();
const btRigidBody* colObj1 = &constraint->getRigidBodyB();
if (((colObj0) && (!(colObj0)->isStaticOrKinematicObject())) &&
((colObj1) && (!(colObj1)->isStaticOrKinematicObject())))
{
getSimulationIslandManager()->getUnionFind().unite((colObj0)->getIslandTag(),(colObj1)->getIslandTag());
}
}
}
}
//merge islands linked by Featherstone link colliders
for (int i=0;i<m_multiBodies.size();i++)
{
btMultiBody* body = m_multiBodies[i];
{
btMultiBodyLinkCollider* prev = body->getBaseCollider();
for (int b=0;b<body->getNumLinks();b++)
{
btMultiBodyLinkCollider* cur = body->getLink(b).m_collider;
if (((cur) && (!(cur)->isStaticOrKinematicObject())) &&
((prev) && (!(prev)->isStaticOrKinematicObject())))
{
int tagPrev = prev->getIslandTag();
int tagCur = cur->getIslandTag();
getSimulationIslandManager()->getUnionFind().unite(tagPrev, tagCur);
}
if (cur && !cur->isStaticOrKinematicObject())
prev = cur;
}
}
}
//merge islands linked by multibody constraints
{
for (int i=0;i<this->m_multiBodyConstraints.size();i++)
{
btMultiBodyConstraint* c = m_multiBodyConstraints[i];
int tagA = c->getIslandIdA();
int tagB = c->getIslandIdB();
if (tagA>=0 && tagB>=0)
getSimulationIslandManager()->getUnionFind().unite(tagA, tagB);
}
}
//Store the island id in each body
getSimulationIslandManager()->storeIslandActivationState(getCollisionWorld());
}
void btMultiBodyDynamicsWorld::integrateTransforms(btScalar timeStep)
{
btDiscreteDynamicsWorld::integrateTransforms(timeStep);
{
BT_PROFILE("btMultiBody stepPositions");
//integrate and update the Featherstone hierarchies
btAlignedObjectArray<btQuaternion> world_to_local;
btAlignedObjectArray<btVector3> local_origin;
for (int b=0;b<m_multiBodies.size();b++)
{
btMultiBody* bod = m_multiBodies[b];
bool isSleeping = false;
if (bod->getBaseCollider() && bod->getBaseCollider()->getActivationState() == ISLAND_SLEEPING)
{
isSleeping = true;
}
for (int b=0;b<bod->getNumLinks();b++)
{
if (bod->getLink(b).m_collider && bod->getLink(b).m_collider->getActivationState()==ISLAND_SLEEPING)
isSleeping = true;
}
if (!isSleeping)
{
int nLinks = bod->getNumLinks();
///base + num links
world_to_local.resize(nLinks+1);
local_origin.resize(nLinks+1);
bod->stepPositions(timeStep);
world_to_local[0] = bod->getWorldToBaseRot();
local_origin[0] = bod->getBasePos();
if (bod->getBaseCollider())
{
btVector3 posr = local_origin[0];
float pos[4]={posr.x(),posr.y(),posr.z(),1};
float quat[4]={-world_to_local[0].x(),-world_to_local[0].y(),-world_to_local[0].z(),world_to_local[0].w()};
btTransform tr;
tr.setIdentity();
tr.setOrigin(posr);
tr.setRotation(btQuaternion(quat[0],quat[1],quat[2],quat[3]));
bod->getBaseCollider()->setWorldTransform(tr);
}
for (int k=0;k<bod->getNumLinks();k++)
{
const int parent = bod->getParent(k);
world_to_local[k+1] = bod->getParentToLocalRot(k) * world_to_local[parent+1];
local_origin[k+1] = local_origin[parent+1] + (quatRotate(world_to_local[k+1].inverse() , bod->getRVector(k)));
}
for (int m=0;m<bod->getNumLinks();m++)
{
btMultiBodyLinkCollider* col = bod->getLink(m).m_collider;
if (col)
{
int link = col->m_link;
btAssert(link == m);
int index = link+1;
btVector3 posr = local_origin[index];
float pos[4]={posr.x(),posr.y(),posr.z(),1};
float quat[4]={-world_to_local[index].x(),-world_to_local[index].y(),-world_to_local[index].z(),world_to_local[index].w()};
btTransform tr;
tr.setIdentity();
tr.setOrigin(posr);
tr.setRotation(btQuaternion(quat[0],quat[1],quat[2],quat[3]));
col->setWorldTransform(tr);
}
}
} else
{
bod->clearVelocities();
}
}
}
}
void btGpu3DGridBroadphase::squeezeOverlappingPairBuff()
{
BT_PROFILE("bt3DGrid_squeezeOverlappingPairBuff");
btGpu_squeezeOverlappingPairBuff(m_hPairBuff, m_hPairBuffStartCurr, m_hPairScan, m_hPairOut, m_hAABB, m_numHandles);
return;
}
void btSimulationIslandManager::buildIslands(btDispatcher* dispatcher,btCollisionWorld* collisionWorld)
{
BT_PROFILE("islandUnionFindAndQuickSort");
btCollisionObjectArray& collisionObjects = collisionWorld->getCollisionObjectArray();
m_islandmanifold.resize(0);
//we are going to sort the unionfind array, and store the element id in the size
//afterwards, we clean unionfind, to make sure no-one uses it anymore
getUnionFind().sortIslands();
int numElem = getUnionFind().getNumElements();
int endIslandIndex=1;
int startIslandIndex;
//update the sleeping state for bodies, if all are sleeping
for ( startIslandIndex=0;startIslandIndex<numElem;startIslandIndex = endIslandIndex)
{
int islandId = getUnionFind().getElement(startIslandIndex).m_id;
for (endIslandIndex = startIslandIndex+1;(endIslandIndex<numElem) && (getUnionFind().getElement(endIslandIndex).m_id == islandId);endIslandIndex++)
{
}
//int numSleeping = 0;
bool allSleeping = true;
int idx;
for (idx=startIslandIndex;idx<endIslandIndex;idx++)
{
int i = getUnionFind().getElement(idx).m_sz;
btCollisionObject* colObj0 = collisionObjects[i];
if ((colObj0->getIslandTag() != islandId) && (colObj0->getIslandTag() != -1))
{
// printf("error in island management\n");
}
btAssert((colObj0->getIslandTag() == islandId) || (colObj0->getIslandTag() == -1));
if (colObj0->getIslandTag() == islandId)
{
if (colObj0->getActivationState()== ACTIVE_TAG)
{
allSleeping = false;
}
if (colObj0->getActivationState()== DISABLE_DEACTIVATION)
{
allSleeping = false;
}
}
}
if (allSleeping)
{
int idx;
for (idx=startIslandIndex;idx<endIslandIndex;idx++)
{
int i = getUnionFind().getElement(idx).m_sz;
btCollisionObject* colObj0 = collisionObjects[i];
if ((colObj0->getIslandTag() != islandId) && (colObj0->getIslandTag() != -1))
{
// printf("error in island management\n");
}
btAssert((colObj0->getIslandTag() == islandId) || (colObj0->getIslandTag() == -1));
if (colObj0->getIslandTag() == islandId)
{
colObj0->setActivationState( ISLAND_SLEEPING );
}
}
} else
{
int idx;
for (idx=startIslandIndex;idx<endIslandIndex;idx++)
{
int i = getUnionFind().getElement(idx).m_sz;
btCollisionObject* colObj0 = collisionObjects[i];
if ((colObj0->getIslandTag() != islandId) && (colObj0->getIslandTag() != -1))
{
// printf("error in island management\n");
}
btAssert((colObj0->getIslandTag() == islandId) || (colObj0->getIslandTag() == -1));
if (colObj0->getIslandTag() == islandId)
{
if ( colObj0->getActivationState() == ISLAND_SLEEPING)
{
colObj0->setActivationState( WANTS_DEACTIVATION);
colObj0->setDeactivationTime(0.f);
}
}
}
}
}
int i;
int maxNumManifolds = dispatcher->getNumManifolds();
//#define SPLIT_ISLANDS 1
//#ifdef SPLIT_ISLANDS
//#endif //SPLIT_ISLANDS
for (i=0;i<maxNumManifolds ;i++)
{
btPersistentManifold* manifold = dispatcher->getManifoldByIndexInternal(i);
btCollisionObject* colObj0 = static_cast<btCollisionObject*>(manifold->getBody0());
btCollisionObject* colObj1 = static_cast<btCollisionObject*>(manifold->getBody1());
///@todo: check sleeping conditions!
if (((colObj0) && colObj0->getActivationState() != ISLAND_SLEEPING) ||
((colObj1) && colObj1->getActivationState() != ISLAND_SLEEPING))
{
//kinematic objects don't merge islands, but wake up all connected objects
if (colObj0->isKinematicObject() && colObj0->getActivationState() != ISLAND_SLEEPING)
{
colObj1->activate();
}
if (colObj1->isKinematicObject() && colObj1->getActivationState() != ISLAND_SLEEPING)
{
colObj0->activate();
}
if(m_splitIslands)
{
//filtering for response
if (dispatcher->needsResponse(colObj0,colObj1))
m_islandmanifold.push_back(manifold);
}
}
}
}
void btParticlesDynamicsWorld::runCollideParticlesKernel()
{
btAlignedObjectArray<int> pairs;
float particleRad = m_simParams.m_particleRad;
float collideDist2 = (particleRad + particleRad)*(particleRad + particleRad);
cl_int ciErrNum;
if(m_useCpuControls[SIMSTAGE_COLLIDE_PARTICLES]->m_active)
{ // CPU version
int memSize = sizeof(btVector3) * m_numParticles;
{
BT_PROFILE("Copy from GPU");
ciErrNum = clEnqueueReadBuffer(m_cqCommandQue, m_dSortedPos, CL_TRUE, 0, memSize, &(m_hSortedPos[0]), 0, NULL, NULL);
oclCHECKERROR(ciErrNum, CL_SUCCESS);
ciErrNum = clEnqueueReadBuffer(m_cqCommandQue, m_dSortedVel, CL_TRUE, 0, memSize, &(m_hSortedVel[0]), 0, NULL, NULL);
oclCHECKERROR(ciErrNum, CL_SUCCESS);
memSize = sizeof(btInt2) * m_numParticles;
ciErrNum = clEnqueueReadBuffer(m_cqCommandQue, m_dPosHash, CL_TRUE, 0, memSize, &(m_hPosHash[0]), 0, NULL, NULL);
memSize = m_numGridCells * sizeof(int);
ciErrNum = clEnqueueReadBuffer(m_cqCommandQue, m_dCellStart, CL_TRUE, 0, memSize, &(m_hCellStart[0]), 0, NULL, NULL);
oclCHECKERROR(ciErrNum, CL_SUCCESS);
}
for(int index = 0; index < m_numParticles; index++)
{
btVector3 posA = m_hSortedPos[index];
btVector3 velA = m_hSortedVel[index];
btVector3 force = btVector3(0, 0, 0);
float particleRad = m_simParams.m_particleRad;
float collisionDamping = m_simParams.m_collisionDamping;
float spring = m_simParams.m_spring;
float shear = m_simParams.m_shear;
float attraction = m_simParams.m_attraction;
int unsortedIndex = m_hPosHash[index].y;
//Get address in grid
btInt4 gridPosA = cpu_getGridPos(posA, &m_simParams);
//Accumulate surrounding cells
btInt4 gridPosB;
for(int z = -1; z <= 1; z++)
{
gridPosB.z = gridPosA.z + z;
for(int y = -1; y <= 1; y++)
{
gridPosB.y = gridPosA.y + y;
for(int x = -1; x <= 1; x++)
{
gridPosB.x = gridPosA.x + x;
//Get start particle index for this cell
unsigned int hashB = cpu_getPosHash(gridPosB, &m_simParams);
int startI = m_hCellStart[hashB];
//Skip empty cell
if(startI < 0)
{
continue;
}
//Iterate over particles in this cell
int endI = startI + 32;
if(endI > m_numParticles)
endI = m_numParticles;
for(int j = startI; j < endI; j++)
{
unsigned int hashC = m_hPosHash[j].x;
if(hashC != hashB)
{
break;
}
if(j == index)
{
continue;
}
btPair pair;
pair.v0[0] = index;
pair.v0[1] = j;
pairs.push_back(pair.value);
// printf("index=%d, j=%d\n",index,j);
// printf("(index=%d, j=%d) ",index,j);
btVector3 posB = m_hSortedPos[j];
btVector3 velB = m_hSortedVel[j];
//Collide two spheres
force += cpu_collideTwoParticles( posA, posB, velA, velB, particleRad, particleRad,
spring, collisionDamping, shear, attraction);
}
}
}
}
//Write new velocity back to original unsorted location
m_hVel[unsortedIndex] = velA + force;
}
//#define BRUTE_FORCE_CHECK 1
#ifdef BRUTE_FORCE_CHECK
for(int index = 0; index < m_numParticles; index++)
{
btVector3 posA = m_hSortedPos[index];
btVector3 velA = m_hSortedVel[index];
btVector3 force = btVector3(0, 0, 0);
int unsortedIndex = m_hPosHash[index].y;
float collisionDamping = m_simParams.m_collisionDamping;
float spring = m_simParams.m_spring;
float shear = m_simParams.m_shear;
float attraction = m_simParams.m_attraction;
for(int j = 0 ; j < m_numParticles; j++)
{
if (index!=j)
{
btVector3 posB = m_hSortedPos[j];
btVector3 velB = m_hSortedVel[j];
btVector3 relPos = posB - posA; relPos[3] = 0.f;
float dist2 = (relPos[0] * relPos[0] + relPos[1] * relPos[1] + relPos[2] * relPos[2]);
if(dist2 < collideDist2)
{
//Collide two spheres
// force += cpu_collideTwoParticles( posA, posB, velA, velB, particleRad, particleRad,
// spring, collisionDamping, shear, attraction);
btPair pair;
pair.v0[0] = index;
pair.v0[1] = j;
if (pairs.findLinearSearch(pair.value)==pairs.size())
{
printf("not found index=%d, j=%d\n",index,j);
}
}
}
}
//Write new velocity back to original unsorted location
//m_hVel[unsortedIndex] = velA + force;
}
#endif //BRUTE_FORCE_CHECK
memSize = sizeof(btVector3) * m_numParticles;
ciErrNum = clEnqueueWriteBuffer(m_cqCommandQue, m_dVel, CL_TRUE, 0, memSize, &(m_hVel[0]), 0, NULL, NULL);
oclCHECKERROR(ciErrNum, CL_SUCCESS);
}
else
{
runKernelWithWorkgroupSize(PARTICLES_KERNEL_COLLIDE_PARTICLES, m_numParticles);
cl_int ciErrNum = clFinish(m_cqCommandQue);
oclCHECKERROR(ciErrNum, CL_SUCCESS);
}
}
void btKinematicCharacterController::preStep( btCollisionWorld* collisionWorld )
{
BT_PROFILE( "preStep" );
for( int i = 0; i < 4 && recoverFromPenetration ( collisionWorld ); i++ );
}
void btDiscreteDynamicsWorld::solveConstraints(btContactSolverInfo& solverInfo)
{
BT_PROFILE("solveConstraints");
struct InplaceSolverIslandCallback : public btSimulationIslandManager::IslandCallback
{
btContactSolverInfo& m_solverInfo;
btConstraintSolver* m_solver;
btTypedConstraint** m_sortedConstraints;
int m_numConstraints;
btIDebugDraw* m_debugDrawer;
btStackAlloc* m_stackAlloc;
btDispatcher* m_dispatcher;
InplaceSolverIslandCallback(
btContactSolverInfo& solverInfo,
btConstraintSolver* solver,
btTypedConstraint** sortedConstraints,
int numConstraints,
btIDebugDraw* debugDrawer,
btStackAlloc* stackAlloc,
btDispatcher* dispatcher)
:m_solverInfo(solverInfo),
m_solver(solver),
m_sortedConstraints(sortedConstraints),
m_numConstraints(numConstraints),
m_debugDrawer(debugDrawer),
m_stackAlloc(stackAlloc),
m_dispatcher(dispatcher)
{
}
InplaceSolverIslandCallback& operator=(InplaceSolverIslandCallback& other)
{
btAssert(0);
(void)other;
return *this;
}
virtual void ProcessIsland(btCollisionObject** bodies,int numBodies,btPersistentManifold** manifolds,int numManifolds, int islandId)
{
if (islandId<0)
{
///we don't split islands, so all constraints/contact manifolds/bodies are passed into the solver regardless the island id
m_solver->solveGroup( bodies,numBodies,manifolds, numManifolds,&m_sortedConstraints[0],m_numConstraints,m_solverInfo,m_debugDrawer,m_stackAlloc,m_dispatcher);
} else
{
//also add all non-contact constraints/joints for this island
btTypedConstraint** startConstraint = 0;
int numCurConstraints = 0;
int i;
//find the first constraint for this island
for (i=0;i<m_numConstraints;i++)
{
if (btGetConstraintIslandId(m_sortedConstraints[i]) == islandId)
{
startConstraint = &m_sortedConstraints[i];
break;
}
}
//count the number of constraints in this island
for (;i<m_numConstraints;i++)
{
if (btGetConstraintIslandId(m_sortedConstraints[i]) == islandId)
{
numCurConstraints++;
}
}
///only call solveGroup if there is some work: avoid virtual function call, its overhead can be excessive
if (numManifolds + numCurConstraints)
{
m_solver->solveGroup( bodies,numBodies,manifolds, numManifolds,startConstraint,numCurConstraints,m_solverInfo,m_debugDrawer,m_stackAlloc,m_dispatcher);
}
}
}
};
//sorted version of all btTypedConstraint, based on islandId
btAlignedObjectArray<btTypedConstraint*> sortedConstraints;
sortedConstraints.resize( m_constraints.size());
int i;
for (i=0;i<getNumConstraints();i++)
{
sortedConstraints[i] = m_constraints[i];
}
// assert(0);
sortedConstraints.quickSort(btSortConstraintOnIslandPredicate());
btTypedConstraint** constraintsPtr = getNumConstraints() ? &sortedConstraints[0] : 0;
InplaceSolverIslandCallback solverCallback( solverInfo, m_constraintSolver, constraintsPtr,sortedConstraints.size(), m_debugDrawer,m_stackAlloc,m_dispatcher1);
m_constraintSolver->prepareSolve(getCollisionWorld()->getNumCollisionObjects(), getCollisionWorld()->getDispatcher()->getNumManifolds());
/// solve all the constraints for this island
m_islandManager->buildAndProcessIslands(getCollisionWorld()->getDispatcher(),getCollisionWorld()->getCollisionObjectArray(),&solverCallback);
m_constraintSolver->allSolved(solverInfo, m_debugDrawer, m_stackAlloc);
}
int main(int argc, char* argv[])
{
CommandLineArgs args(argc,argv);
if (args.CheckCmdLineFlag("help"))
{
Usage();
return 0;
}
args.GetCmdLineArgument("enable_interop", useInterop);
printf("useInterop=%d\n",useInterop);
args.GetCmdLineArgument("enable_convexheightfield", useConvexHeightfield);
printf("enable_convexheightfield=%d\n",useConvexHeightfield);
args.GetCmdLineArgument("enable_gpusap", useSapGpuBroadphase);
printf("enable_gpusap=%d\n",useSapGpuBroadphase);
args.GetCmdLineArgument("pause_simulation", pauseSimulation);
printf("pause_simulation=%d\n",pauseSimulation);
args.GetCmdLineArgument("x_dim", NUM_OBJECTS_X);
args.GetCmdLineArgument("y_dim", NUM_OBJECTS_Y);
args.GetCmdLineArgument("z_dim", NUM_OBJECTS_Z);
args.GetCmdLineArgument("x_gap", X_GAP);
args.GetCmdLineArgument("y_gap", Y_GAP);
args.GetCmdLineArgument("z_gap", Z_GAP);
printf("x_dim=%d, y_dim=%d, z_dim=%d\n",NUM_OBJECTS_X,NUM_OBJECTS_Y,NUM_OBJECTS_Z);
printf("x_gap=%f, y_gap=%f, z_gap=%f\n",X_GAP,Y_GAP,Z_GAP);
args.GetCmdLineArgument("enable_static", keepStaticObjects);
printf("enable_static=%d\n",keepStaticObjects);
char* tmpfile = 0;
args.GetCmdLineArgument("load_bulletfile", tmpfile );
if (tmpfile)
fileName = tmpfile;
printf("load_bulletfile=%s\n",fileName);
printf("\n");
#ifdef _WIN32
Win32OpenGLWindow* window = new Win32OpenGLWindow();
#else
MacOpenGLWindow* window = new MacOpenGLWindow();
#endif
window->init(1024,768);
#ifdef _WIN32
GLenum err = glewInit();
#endif
window->startRendering();
window->endRendering();
GLInstancingRenderer render;
CLPhysicsDemo demo(window);
demo.init(-1,-1,useInterop);
render.InitShaders();
if (useInterop)
demo.setupInterop();
createScene(render, demo, useConvexHeightfield,fileName);
printf("numPhysicsInstances= %d\n", demo.m_numPhysicsInstances);
printf("numDynamicPhysicsInstances= %d\n", demo.m_numDynamicPhysicsInstances);
render.writeTransforms();
window->startRendering();
render.RenderScene();
window->endRendering();
while (!window->requestedExit())
{
CProfileManager::Reset();
if (shootObject)
{
shootObject = false;
btVector3 linVel;// = (m_cameraPosition-m_cameraTargetPosition).normalize()*-100;
int x,y;
window->getMouseCoordinates(x,y);
render.getMouseDirection(&linVel[0],x,y);
linVel.normalize();
linVel*=100;
// btVector3 startPos;
demo.setObjectLinearVelocity(&linVel[0],0);
float orn[4] = {0,0,0,1};
float pos[4] = {m_cameraPosition[0],m_cameraPosition[1],m_cameraPosition[2],1};
// demo.setObjectTransform(pos,orn,0);
render.writeSingleTransform(pos,orn,0);
// createScene(render, demo);
// printf("numPhysicsInstances= %d\n", demo.m_numPhysicsInstances);
// printf("numDynamicPhysicsInstances= %d\n", demo.m_numDynamicPhysicsInstances);
// render.writeTransforms();
}
if (!pauseSimulation )
demo.stepSimulation();
window->startRendering();
render.RenderScene();
window->endRendering();
{
BT_PROFILE("glFinish");
glFinish();
}
CProfileManager::Increment_Frame_Counter();
if (printStats && !pauseSimulation)
{
static int count = 3;
count--;
if (count<0)
{
count = 100;
CProfileManager::dumpAll();
printf("total broadphase pairs= %d\n", numPairsTotal);
printf("numPairsOut (culled) = %d\n", numPairsOut);
//printStats = false;
} else
{
// printf(".");
}
}
}
demo.cleanup();
render.CleanupShaders();
window->exit();
delete window;
return 0;
}
void btMultiBodyDynamicsWorld::debugDrawWorld()
{
BT_PROFILE("btMultiBodyDynamicsWorld debugDrawWorld");
bool drawConstraints = false;
if (getDebugDrawer())
{
int mode = getDebugDrawer()->getDebugMode();
if (mode & (btIDebugDraw::DBG_DrawConstraints | btIDebugDraw::DBG_DrawConstraintLimits))
{
drawConstraints = true;
}
if (drawConstraints)
{
BT_PROFILE("btMultiBody debugDrawWorld");
for (int c=0;c<m_multiBodyConstraints.size();c++)
{
btMultiBodyConstraint* constraint = m_multiBodyConstraints[c];
debugDrawMultiBodyConstraint(constraint);
}
for (int b = 0; b<m_multiBodies.size(); b++)
{
btMultiBody* bod = m_multiBodies[b];
bod->forwardKinematics(m_scratch_world_to_local1,m_scratch_local_origin1);
getDebugDrawer()->drawTransform(bod->getBaseWorldTransform(), 0.1);
for (int m = 0; m<bod->getNumLinks(); m++)
{
const btTransform& tr = bod->getLink(m).m_cachedWorldTransform;
getDebugDrawer()->drawTransform(tr, 0.1);
//draw the joint axis
if (bod->getLink(m).m_jointType==btMultibodyLink::eRevolute)
{
btVector3 vec = quatRotate(tr.getRotation(),bod->getLink(m).m_axes[0].m_topVec);
btVector4 color(0,0,0,1);//1,1,1);
btVector3 from = vec+tr.getOrigin()-quatRotate(tr.getRotation(),bod->getLink(m).m_dVector);
btVector3 to = tr.getOrigin()-quatRotate(tr.getRotation(),bod->getLink(m).m_dVector);
getDebugDrawer()->drawLine(from,to,color);
}
if (bod->getLink(m).m_jointType==btMultibodyLink::eFixed)
{
btVector3 vec = quatRotate(tr.getRotation(),bod->getLink(m).m_axes[0].m_bottomVec);
btVector4 color(0,0,0,1);//1,1,1);
btVector3 from = vec+tr.getOrigin()-quatRotate(tr.getRotation(),bod->getLink(m).m_dVector);
btVector3 to = tr.getOrigin()-quatRotate(tr.getRotation(),bod->getLink(m).m_dVector);
getDebugDrawer()->drawLine(from,to,color);
}
if (bod->getLink(m).m_jointType==btMultibodyLink::ePrismatic)
{
btVector3 vec = quatRotate(tr.getRotation(),bod->getLink(m).m_axes[0].m_bottomVec);
btVector4 color(0,0,0,1);//1,1,1);
btVector3 from = vec+tr.getOrigin()-quatRotate(tr.getRotation(),bod->getLink(m).m_dVector);
btVector3 to = tr.getOrigin()-quatRotate(tr.getRotation(),bod->getLink(m).m_dVector);
getDebugDrawer()->drawLine(from,to,color);
}
}
}
}
}
btDiscreteDynamicsWorld::debugDrawWorld();
}
void btCollisionWorld::objectQuerySingle(const btConvexShape* castShape,const btTransform& convexFromTrans,const btTransform& convexToTrans,
btCollisionObject* collisionObject,
const btCollisionShape* collisionShape,
const btTransform& colObjWorldTransform,
ConvexResultCallback& resultCallback, btScalar allowedPenetration)
{
if (collisionShape->isConvex())
{
//BT_PROFILE("convexSweepConvex");
btConvexCast::CastResult castResult;
castResult.m_allowedPenetration = allowedPenetration;
castResult.m_fraction = resultCallback.m_closestHitFraction;//btScalar(1.);//??
btConvexShape* convexShape = (btConvexShape*) collisionShape;
btVoronoiSimplexSolver simplexSolver;
btGjkEpaPenetrationDepthSolver gjkEpaPenetrationSolver;
btContinuousConvexCollision convexCaster1(castShape,convexShape,&simplexSolver,&gjkEpaPenetrationSolver);
//btGjkConvexCast convexCaster2(castShape,convexShape,&simplexSolver);
//btSubsimplexConvexCast convexCaster3(castShape,convexShape,&simplexSolver);
btConvexCast* castPtr = &convexCaster1;
if (castPtr->calcTimeOfImpact(convexFromTrans,convexToTrans,colObjWorldTransform,colObjWorldTransform,castResult))
{
//add hit
if (castResult.m_normal.length2() > btScalar(0.0001))
{
if (castResult.m_fraction < resultCallback.m_closestHitFraction)
{
castResult.m_normal.normalize();
btCollisionWorld::LocalConvexResult localConvexResult
(
collisionObject,
0,
castResult.m_normal,
castResult.m_hitPoint,
castResult.m_fraction
);
bool normalInWorldSpace = true;
resultCallback.addSingleResult(localConvexResult, normalInWorldSpace);
}
}
}
} else {
if (collisionShape->isConcave())
{
if (collisionShape->getShapeType()==TRIANGLE_MESH_SHAPE_PROXYTYPE)
{
//BT_PROFILE("convexSweepbtBvhTriangleMesh");
btBvhTriangleMeshShape* triangleMesh = (btBvhTriangleMeshShape*)collisionShape;
btTransform worldTocollisionObject = colObjWorldTransform.inverse();
btVector3 convexFromLocal = worldTocollisionObject * convexFromTrans.getOrigin();
btVector3 convexToLocal = worldTocollisionObject * convexToTrans.getOrigin();
// rotation of box in local mesh space = MeshRotation^-1 * ConvexToRotation
btTransform rotationXform = btTransform(worldTocollisionObject.getBasis() * convexToTrans.getBasis());
//ConvexCast::CastResult
struct BridgeTriangleConvexcastCallback : public btTriangleConvexcastCallback
{
btCollisionWorld::ConvexResultCallback* m_resultCallback;
btCollisionObject* m_collisionObject;
btTriangleMeshShape* m_triangleMesh;
BridgeTriangleConvexcastCallback(const btConvexShape* castShape, const btTransform& from,const btTransform& to,
btCollisionWorld::ConvexResultCallback* resultCallback, btCollisionObject* collisionObject,btTriangleMeshShape* triangleMesh, const btTransform& triangleToWorld):
btTriangleConvexcastCallback(castShape, from,to, triangleToWorld, triangleMesh->getMargin()),
m_resultCallback(resultCallback),
m_collisionObject(collisionObject),
m_triangleMesh(triangleMesh)
{
}
virtual btScalar reportHit(const btVector3& hitNormalLocal, const btVector3& hitPointLocal, btScalar hitFraction, int partId, int triangleIndex )
{
btCollisionWorld::LocalShapeInfo shapeInfo;
shapeInfo.m_shapePart = partId;
shapeInfo.m_triangleIndex = triangleIndex;
if (hitFraction <= m_resultCallback->m_closestHitFraction)
{
btCollisionWorld::LocalConvexResult convexResult
(m_collisionObject,
&shapeInfo,
hitNormalLocal,
hitPointLocal,
hitFraction);
bool normalInWorldSpace = true;
return m_resultCallback->addSingleResult(convexResult,normalInWorldSpace);
}
return hitFraction;
}
};
BridgeTriangleConvexcastCallback tccb(castShape, convexFromTrans,convexToTrans,&resultCallback,collisionObject,triangleMesh, colObjWorldTransform);
tccb.m_hitFraction = resultCallback.m_closestHitFraction;
btVector3 boxMinLocal, boxMaxLocal;
castShape->getAabb(rotationXform, boxMinLocal, boxMaxLocal);
triangleMesh->performConvexcast(&tccb,convexFromLocal,convexToLocal,boxMinLocal, boxMaxLocal);
} else
{
//BT_PROFILE("convexSweepConcave");
btConcaveShape* concaveShape = (btConcaveShape*)collisionShape;
btTransform worldTocollisionObject = colObjWorldTransform.inverse();
btVector3 convexFromLocal = worldTocollisionObject * convexFromTrans.getOrigin();
btVector3 convexToLocal = worldTocollisionObject * convexToTrans.getOrigin();
// rotation of box in local mesh space = MeshRotation^-1 * ConvexToRotation
btTransform rotationXform = btTransform(worldTocollisionObject.getBasis() * convexToTrans.getBasis());
//ConvexCast::CastResult
struct BridgeTriangleConvexcastCallback : public btTriangleConvexcastCallback
{
btCollisionWorld::ConvexResultCallback* m_resultCallback;
btCollisionObject* m_collisionObject;
btConcaveShape* m_triangleMesh;
BridgeTriangleConvexcastCallback(const btConvexShape* castShape, const btTransform& from,const btTransform& to,
btCollisionWorld::ConvexResultCallback* resultCallback, btCollisionObject* collisionObject,btConcaveShape* triangleMesh, const btTransform& triangleToWorld):
btTriangleConvexcastCallback(castShape, from,to, triangleToWorld, triangleMesh->getMargin()),
m_resultCallback(resultCallback),
m_collisionObject(collisionObject),
m_triangleMesh(triangleMesh)
{
}
virtual btScalar reportHit(const btVector3& hitNormalLocal, const btVector3& hitPointLocal, btScalar hitFraction, int partId, int triangleIndex )
{
btCollisionWorld::LocalShapeInfo shapeInfo;
shapeInfo.m_shapePart = partId;
shapeInfo.m_triangleIndex = triangleIndex;
if (hitFraction <= m_resultCallback->m_closestHitFraction)
{
btCollisionWorld::LocalConvexResult convexResult
(m_collisionObject,
&shapeInfo,
hitNormalLocal,
hitPointLocal,
hitFraction);
bool normalInWorldSpace = false;
return m_resultCallback->addSingleResult(convexResult,normalInWorldSpace);
}
return hitFraction;
}
};
BridgeTriangleConvexcastCallback tccb(castShape, convexFromTrans,convexToTrans,&resultCallback,collisionObject,concaveShape, colObjWorldTransform);
tccb.m_hitFraction = resultCallback.m_closestHitFraction;
btVector3 boxMinLocal, boxMaxLocal;
castShape->getAabb(rotationXform, boxMinLocal, boxMaxLocal);
btVector3 rayAabbMinLocal = convexFromLocal;
rayAabbMinLocal.setMin(convexToLocal);
btVector3 rayAabbMaxLocal = convexFromLocal;
rayAabbMaxLocal.setMax(convexToLocal);
rayAabbMinLocal += boxMinLocal;
rayAabbMaxLocal += boxMaxLocal;
concaveShape->processAllTriangles(&tccb,rayAabbMinLocal,rayAabbMaxLocal);
}
} else {
///@todo : use AABB tree or other BVH acceleration structure!
if (collisionShape->isCompound())
{
BT_PROFILE("convexSweepCompound");
const btCompoundShape* compoundShape = static_cast<const btCompoundShape*>(collisionShape);
int i=0;
for (i=0;i<compoundShape->getNumChildShapes();i++)
{
btTransform childTrans = compoundShape->getChildTransform(i);
const btCollisionShape* childCollisionShape = compoundShape->getChildShape(i);
btTransform childWorldTrans = colObjWorldTransform * childTrans;
// replace collision shape so that callback can determine the triangle
btCollisionShape* saveCollisionShape = collisionObject->getCollisionShape();
collisionObject->internalSetTemporaryCollisionShape((btCollisionShape*)childCollisionShape);
objectQuerySingle(castShape, convexFromTrans,convexToTrans,
collisionObject,
childCollisionShape,
childWorldTrans,
resultCallback, allowedPenetration);
// restore
collisionObject->internalSetTemporaryCollisionShape(saveCollisionShape);
}
}
}
}
}
void SpuGatheringCollisionDispatcher::dispatchAllCollisionPairs(btOverlappingPairCache* pairCache,const btDispatcherInfo& dispatchInfo, btDispatcher* dispatcher)
{
if (dispatchInfo.m_enableSPU)
{
m_maxNumOutstandingTasks = m_threadInterface->getNumTasks();
{
BT_PROFILE("processAllOverlappingPairs");
if (!m_spuCollisionTaskProcess)
m_spuCollisionTaskProcess = new SpuCollisionTaskProcess(m_threadInterface,m_maxNumOutstandingTasks);
m_spuCollisionTaskProcess->setNumTasks(m_maxNumOutstandingTasks);
// printf("m_maxNumOutstandingTasks =%d\n",m_maxNumOutstandingTasks);
m_spuCollisionTaskProcess->initialize2(dispatchInfo.m_useEpa);
///modified version of btCollisionDispatcher::dispatchAllCollisionPairs:
{
btSpuCollisionPairCallback collisionCallback(dispatchInfo,this);
pairCache->processAllOverlappingPairs(&collisionCallback,dispatcher);
}
}
//send one big batch
int numTotalPairs = pairCache->getNumOverlappingPairs();
btBroadphasePair* pairPtr = pairCache->getOverlappingPairArrayPtr();
int i;
{
int pairRange = SPU_BATCHSIZE_BROADPHASE_PAIRS;
if (numTotalPairs < (m_spuCollisionTaskProcess->getNumTasks()*SPU_BATCHSIZE_BROADPHASE_PAIRS))
{
pairRange = (numTotalPairs/m_spuCollisionTaskProcess->getNumTasks())+1;
}
BT_PROFILE("addWorkToTask");
for (i=0;i<numTotalPairs;)
{
//Performance Hint: tweak this number during benchmarking
int endIndex = (i+pairRange) < numTotalPairs ? i+pairRange : numTotalPairs;
m_spuCollisionTaskProcess->addWorkToTask(pairPtr,i,endIndex);
i = endIndex;
}
}
{
BT_PROFILE("PPU fallback");
//handle PPU fallback pairs
for (i=0;i<numTotalPairs;i++)
{
btBroadphasePair& collisionPair = pairPtr[i];
if (collisionPair.m_internalTmpValue == 3)
{
if (collisionPair.m_algorithm)
{
btCollisionObject* colObj0 = (btCollisionObject*)collisionPair.m_pProxy0->m_clientObject;
btCollisionObject* colObj1 = (btCollisionObject*)collisionPair.m_pProxy1->m_clientObject;
if (dispatcher->needsCollision(colObj0,colObj1))
{
btManifoldResult contactPointResult(colObj0,colObj1);
if (dispatchInfo.m_dispatchFunc == btDispatcherInfo::DISPATCH_DISCRETE)
{
//discrete collision detection query
collisionPair.m_algorithm->processCollision(colObj0,colObj1,dispatchInfo,&contactPointResult);
} else
{
//continuous collision detection query, time of impact (toi)
btScalar toi = collisionPair.m_algorithm->calculateTimeOfImpact(colObj0,colObj1,dispatchInfo,&contactPointResult);
if (dispatchInfo.m_timeOfImpact > toi)
dispatchInfo.m_timeOfImpact = toi;
}
}
}
}
}
}
{
BT_PROFILE("flush2");
//make sure all SPU work is done
m_spuCollisionTaskProcess->flush2();
}
} else
{
///PPU fallback
///!Need to make sure to clear all 'algorithms' when switching between SPU and PPU
btCollisionDispatcher::dispatchAllCollisionPairs(pairCache,dispatchInfo,dispatcher);
}
}
void btGpu3DGridBroadphase::findPairsLarge()
{
BT_PROFILE("bt3DGrid_findPairsLarge");
btGpu_findPairsLarge(m_hAABB, m_hBodiesHash, m_hCellStart, m_hPairBuff, m_hPairBuffStartCurr, m_numHandles, m_numLargeHandles);
return;
}
void btKinematicCharacterController::playerStep( btCollisionWorld* collisionWorld, btScalar dt )
{
BT_PROFILE( "playerStep" );
if( !m_useWalkDirection && m_velocityTimeInterval <= btScalar( 0.0 ) )
return;
bool wasOnGround = onGround();
// Handle the gravity
//
m_verticalVelocity -= m_gravity * dt;
if( m_verticalVelocity > 0.0 && m_verticalVelocity > m_jumpSpeed )
m_verticalVelocity = m_jumpSpeed;
if( m_verticalVelocity < 0.0 && btFabs( m_verticalVelocity ) > btFabs( m_fallSpeed ) )
m_verticalVelocity = -btFabs( m_fallSpeed );
m_verticalOffset = m_verticalVelocity * dt;
// This forced stepping up can cause problems when the character
// walks (jump in fact...) under too low ceilings.
//
btVector3 currentPosition = externalGhostObject->getWorldTransform().getOrigin();
btScalar currentStepOffset;
currentPosition = stepUp( collisionWorld, currentPosition, currentStepOffset );
// Move in the air and slide against the walls ignoring the stair steps.
//
if( m_useWalkDirection )
currentPosition = stepForwardAndStrafe( collisionWorld, currentPosition, m_walkDirection );
else
{
btScalar dtMoving = ( dt < m_velocityTimeInterval ) ? dt : m_velocityTimeInterval;
m_velocityTimeInterval -= dt;
// How far will we move while we are moving ?
//
btVector3 moveDirection = m_walkDirection * dtMoving;
currentPosition = stepForwardAndStrafe( collisionWorld, currentPosition, moveDirection );
}
// Finally find the ground.
//
currentStepOffset = addFallOffset( wasOnGround, currentStepOffset, dt );
currentPosition = stepDown( collisionWorld, currentPosition, currentStepOffset );
// Apply the new position to the collision objects.
//
btTransform tranform;
tranform = externalGhostObject->getWorldTransform();
tranform.setOrigin( currentPosition );
externalGhostObject->setWorldTransform( tranform );
internalGhostObject->setWorldTransform( tranform );
}
void btGpu3DGridBroadphase::computePairCacheChanges()
{
BT_PROFILE("bt3DGrid_computePairCacheChanges");
btGpu_computePairCacheChanges(m_hPairBuff, m_hPairBuffStartCurr, m_hPairScan, m_hAABB, m_numHandles);
return;
}
void btFluidRigidDynamicsWorld::internalSingleStepSimulation(btScalar timeStep)
{
BT_PROFILE("FluidRigidWorld - singleStepSimulation()");
//Use emitters and absorbers
for(int i = 0; i < m_emitters.size(); ++i)
{
btFluidEmitter* emitter = m_emitters[i];
emitter->emit();
}
//
if(m_internalFluidPreTickCallback) m_internalFluidPreTickCallback(this, timeStep);
// Temporary - allow m_fluidSolver to be 0 so that btFluidHfRigidDynamicsWorld
// does not require a btFluidSolverSph to be specified in its constructor.
if(!m_fluidSolver)
{
btDiscreteDynamicsWorld::internalSingleStepSimulation(timeStep);
return;
}
for(int i = 0; i < m_fluids.size(); ++i) m_fluids[i]->internalClearRigidContacts();
//btFluidSph-btRigidBody/btCollisionObject AABB intersections are
//detected here(not midphase/narrowphase), so calling removeMarkedParticles()
//below does not invalidate the collisions.
btDiscreteDynamicsWorld::internalSingleStepSimulation(timeStep);
for(int i = 0; i < m_fluids.size(); ++i) m_fluids[i]->removeMarkedParticles();
//SPH forces
{
int numDefaultSolverFluids = m_tempDefaultFluids.size();
if(numDefaultSolverFluids)
{
m_fluidSolver->updateGridAndCalculateSphForces(m_globalParameters, &m_tempDefaultFluids[0], numDefaultSolverFluids);
}
for(int i = 0; i < m_tempOverrideFluids.size(); ++i)
{
btFluidSph* fluid = m_tempOverrideFluids[i];
btFluidSphSolver* overrideSolver = fluid->getOverrideSolver();
btFluidSphParametersGlobal* overrideParameters = fluid->getOverrideParameters();
btFluidSphSolver* usedSolver = (overrideSolver) ? overrideSolver : m_fluidSolver;
btFluidSphParametersGlobal* usedGlobalParameters = (overrideParameters) ? overrideParameters : &m_globalParameters;
usedSolver->updateGridAndCalculateSphForces( *usedGlobalParameters, &fluid, 1 );
}
}
//Detect and resolve collisions, integrate
{
const bool USE_IMPULSE_BOUNDARY = 1; //Penalty force otherwise
for(int i = 0; i < m_fluids.size(); ++i)
{
btFluidSph* fluid = m_fluids[i];
const btFluidSphParametersLocal& FL = fluid->getLocalParameters();
if(!USE_IMPULSE_BOUNDARY)
{
m_fluidRigidCollisionDetector.performNarrowphase(m_dispatcher1, m_dispatchInfo, m_globalParameters, m_fluids[i]);
m_fluidRigidConstraintSolver.resolveCollisionsForce(m_globalParameters, m_fluids[i]);
}
btFluidSphSolver::applyForcesSingleFluid(m_globalParameters, fluid);
if(USE_IMPULSE_BOUNDARY)
{
m_fluidRigidCollisionDetector.performNarrowphase(m_dispatcher1, m_dispatchInfo, m_globalParameters, m_fluids[i]);
m_fluidRigidConstraintSolver.resolveCollisionsImpulse(m_globalParameters, m_fluids[i]);
}
btFluidSphSolver::integratePositionsSingleFluid( m_globalParameters, fluid->internalGetParticles() );
}
}
if(m_internalFluidPostTickCallback) m_internalFluidPostTickCallback(this, timeStep);
}
void btMultiBodyDynamicsWorld::solveConstraints(btContactSolverInfo& solverInfo)
{
btAlignedObjectArray<btScalar> scratch_r;
btAlignedObjectArray<btVector3> scratch_v;
btAlignedObjectArray<btMatrix3x3> scratch_m;
BT_PROFILE("solveConstraints");
m_sortedConstraints.resize( m_constraints.size());
int i;
for (i=0;i<getNumConstraints();i++)
{
m_sortedConstraints[i] = m_constraints[i];
}
m_sortedConstraints.quickSort(btSortConstraintOnIslandPredicate2());
btTypedConstraint** constraintsPtr = getNumConstraints() ? &m_sortedConstraints[0] : 0;
m_sortedMultiBodyConstraints.resize(m_multiBodyConstraints.size());
for (i=0;i<m_multiBodyConstraints.size();i++)
{
m_sortedMultiBodyConstraints[i] = m_multiBodyConstraints[i];
}
m_sortedMultiBodyConstraints.quickSort(btSortMultiBodyConstraintOnIslandPredicate());
btMultiBodyConstraint** sortedMultiBodyConstraints = m_sortedMultiBodyConstraints.size() ? &m_sortedMultiBodyConstraints[0] : 0;
m_solverMultiBodyIslandCallback->setup(&solverInfo,constraintsPtr,m_sortedConstraints.size(),sortedMultiBodyConstraints,m_sortedMultiBodyConstraints.size(), getDebugDrawer());
m_constraintSolver->prepareSolve(getCollisionWorld()->getNumCollisionObjects(), getCollisionWorld()->getDispatcher()->getNumManifolds());
/// solve all the constraints for this island
m_islandManager->buildAndProcessIslands(getCollisionWorld()->getDispatcher(),getCollisionWorld(),m_solverMultiBodyIslandCallback);
{
BT_PROFILE("btMultiBody addForce and stepVelocities");
for (int i=0;i<this->m_multiBodies.size();i++)
{
btMultiBody* bod = m_multiBodies[i];
bool isSleeping = false;
if (bod->getBaseCollider() && bod->getBaseCollider()->getActivationState() == ISLAND_SLEEPING)
{
isSleeping = true;
}
for (int b=0;b<bod->getNumLinks();b++)
{
if (bod->getLink(b).m_collider && bod->getLink(b).m_collider->getActivationState()==ISLAND_SLEEPING)
isSleeping = true;
}
if (!isSleeping)
{
//useless? they get resized in stepVelocities once again (AND DIFFERENTLY)
scratch_r.resize(bod->getNumLinks()+1); //multidof? ("Y"s use it and it is used to store qdd)
scratch_v.resize(bod->getNumLinks()+1);
scratch_m.resize(bod->getNumLinks()+1);
bod->clearForcesAndTorques();
bod->addBaseForce(m_gravity * bod->getBaseMass());
for (int j = 0; j < bod->getNumLinks(); ++j)
{
bod->addLinkForce(j, m_gravity * bod->getLinkMass(j));
}
bool doNotUpdatePos = false;
if(bod->isMultiDof())
{
if(!bod->isUsingRK4Integration())
bod->stepVelocitiesMultiDof(solverInfo.m_timeStep, scratch_r, scratch_v, scratch_m);
else
{
//
int numDofs = bod->getNumDofs() + 6;
int numPosVars = bod->getNumPosVars() + 7;
btAlignedObjectArray<btScalar> scratch_r2; scratch_r2.resize(2*numPosVars + 8*numDofs);
//convenience
btScalar *pMem = &scratch_r2[0];
btScalar *scratch_q0 = pMem; pMem += numPosVars;
btScalar *scratch_qx = pMem; pMem += numPosVars;
btScalar *scratch_qd0 = pMem; pMem += numDofs;
btScalar *scratch_qd1 = pMem; pMem += numDofs;
btScalar *scratch_qd2 = pMem; pMem += numDofs;
btScalar *scratch_qd3 = pMem; pMem += numDofs;
btScalar *scratch_qdd0 = pMem; pMem += numDofs;
btScalar *scratch_qdd1 = pMem; pMem += numDofs;
btScalar *scratch_qdd2 = pMem; pMem += numDofs;
btScalar *scratch_qdd3 = pMem; pMem += numDofs;
btAssert((pMem - (2*numPosVars + 8*numDofs)) == &scratch_r2[0]);
/////
//copy q0 to scratch_q0 and qd0 to scratch_qd0
scratch_q0[0] = bod->getWorldToBaseRot().x();
scratch_q0[1] = bod->getWorldToBaseRot().y();
scratch_q0[2] = bod->getWorldToBaseRot().z();
scratch_q0[3] = bod->getWorldToBaseRot().w();
scratch_q0[4] = bod->getBasePos().x();
scratch_q0[5] = bod->getBasePos().y();
scratch_q0[6] = bod->getBasePos().z();
//
for(int link = 0; link < bod->getNumLinks(); ++link)
{
for(int dof = 0; dof < bod->getLink(link).m_posVarCount; ++dof)
scratch_q0[7 + bod->getLink(link).m_cfgOffset + dof] = bod->getLink(link).m_jointPos[dof];
}
//
for(int dof = 0; dof < numDofs; ++dof)
scratch_qd0[dof] = bod->getVelocityVector()[dof];
////
struct
{
btMultiBody *bod;
btScalar *scratch_qx, *scratch_q0;
void operator()()
{
for(int dof = 0; dof < bod->getNumPosVars() + 7; ++dof)
scratch_qx[dof] = scratch_q0[dof];
}
} pResetQx = {bod, scratch_qx, scratch_q0};
//
struct
{
void operator()(btScalar dt, const btScalar *pDer, const btScalar *pCurVal, btScalar *pVal, int size)
{
for(int i = 0; i < size; ++i)
pVal[i] = pCurVal[i] + dt * pDer[i];
}
} pEulerIntegrate;
//
struct
{
void operator()(btMultiBody *pBody, const btScalar *pData)
{
btScalar *pVel = const_cast<btScalar*>(pBody->getVelocityVector());
for(int i = 0; i < pBody->getNumDofs() + 6; ++i)
pVel[i] = pData[i];
}
} pCopyToVelocityVector;
//
struct
{
void operator()(const btScalar *pSrc, btScalar *pDst, int start, int size)
{
for(int i = 0; i < size; ++i)
pDst[i] = pSrc[start + i];
}
} pCopy;
//
btScalar h = solverInfo.m_timeStep;
#define output &scratch_r[bod->getNumDofs()]
//calc qdd0 from: q0 & qd0
bod->stepVelocitiesMultiDof(0., scratch_r, scratch_v, scratch_m);
pCopy(output, scratch_qdd0, 0, numDofs);
//calc q1 = q0 + h/2 * qd0
pResetQx();
bod->stepPositionsMultiDof(btScalar(.5)*h, scratch_qx, scratch_qd0);
//calc qd1 = qd0 + h/2 * qdd0
pEulerIntegrate(btScalar(.5)*h, scratch_qdd0, scratch_qd0, scratch_qd1, numDofs);
//
//calc qdd1 from: q1 & qd1
pCopyToVelocityVector(bod, scratch_qd1);
bod->stepVelocitiesMultiDof(0., scratch_r, scratch_v, scratch_m);
pCopy(output, scratch_qdd1, 0, numDofs);
//calc q2 = q0 + h/2 * qd1
pResetQx();
bod->stepPositionsMultiDof(btScalar(.5)*h, scratch_qx, scratch_qd1);
//calc qd2 = qd0 + h/2 * qdd1
pEulerIntegrate(btScalar(.5)*h, scratch_qdd1, scratch_qd0, scratch_qd2, numDofs);
//
//calc qdd2 from: q2 & qd2
pCopyToVelocityVector(bod, scratch_qd2);
bod->stepVelocitiesMultiDof(0., scratch_r, scratch_v, scratch_m);
pCopy(output, scratch_qdd2, 0, numDofs);
//calc q3 = q0 + h * qd2
pResetQx();
bod->stepPositionsMultiDof(h, scratch_qx, scratch_qd2);
//calc qd3 = qd0 + h * qdd2
pEulerIntegrate(h, scratch_qdd2, scratch_qd0, scratch_qd3, numDofs);
//
//calc qdd3 from: q3 & qd3
pCopyToVelocityVector(bod, scratch_qd3);
bod->stepVelocitiesMultiDof(0., scratch_r, scratch_v, scratch_m);
pCopy(output, scratch_qdd3, 0, numDofs);
//
//calc q = q0 + h/6(qd0 + 2*(qd1 + qd2) + qd3)
//calc qd = qd0 + h/6(qdd0 + 2*(qdd1 + qdd2) + qdd3)
btAlignedObjectArray<btScalar> delta_q; delta_q.resize(numDofs);
btAlignedObjectArray<btScalar> delta_qd; delta_qd.resize(numDofs);
for(int i = 0; i < numDofs; ++i)
{
delta_q[i] = h/btScalar(6.)*(scratch_qd0[i] + 2*scratch_qd1[i] + 2*scratch_qd2[i] + scratch_qd3[i]);
delta_qd[i] = h/btScalar(6.)*(scratch_qdd0[i] + 2*scratch_qdd1[i] + 2*scratch_qdd2[i] + scratch_qdd3[i]);
//delta_q[i] = h*scratch_qd0[i];
//delta_qd[i] = h*scratch_qdd0[i];
}
//
pCopyToVelocityVector(bod, scratch_qd0);
bod->applyDeltaVeeMultiDof(&delta_qd[0], 1);
//
if(!doNotUpdatePos)
{
btScalar *pRealBuf = const_cast<btScalar *>(bod->getVelocityVector());
pRealBuf += 6 + bod->getNumDofs() + bod->getNumDofs()*bod->getNumDofs();
for(int i = 0; i < numDofs; ++i)
pRealBuf[i] = delta_q[i];
//bod->stepPositionsMultiDof(1, 0, &delta_q[0]);
bod->setPosUpdated(true);
}
//ugly hack which resets the cached data to t0 (needed for constraint solver)
{
for(int link = 0; link < bod->getNumLinks(); ++link)
bod->getLink(link).updateCacheMultiDof();
bod->stepVelocitiesMultiDof(0, scratch_r, scratch_v, scratch_m);
}
}
}
else
bod->stepVelocities(solverInfo.m_timeStep, scratch_r, scratch_v, scratch_m);
}
}
}
m_solverMultiBodyIslandCallback->processConstraints();
m_constraintSolver->allSolved(solverInfo, m_debugDrawer);
}
void btSimulationIslandManager::buildIslands( btDispatcher* dispatcher, btCollisionWorld* collisionWorld )
{
BT_PROFILE("islandUnionFindAndQuickSort");
btCollisionObjectArray& collisionObjects = collisionWorld->getCollisionObjectArray();
//we are going to sort the unionfind array, and store the element id in the size
//afterwards, we clean unionfind, to make sure no-one uses it anymore
getUnionFind().sortIslands();
int numElem = getUnionFind().getNumElements();
int endIslandIndex=1;
int startIslandIndex;
//update the sleeping state for bodies, if all are sleeping
for ( startIslandIndex=0;startIslandIndex<numElem;startIslandIndex = endIslandIndex)
{
int islandId = getUnionFind().getElement(startIslandIndex).m_id;
for (endIslandIndex = startIslandIndex+1;(endIslandIndex<numElem) && (getUnionFind().getElement(endIslandIndex).m_id == islandId);endIslandIndex++)
{
}
//int numSleeping = 0;
bool allSleeping = true;
int idx;
for (idx=startIslandIndex;idx<endIslandIndex;idx++)
{
int i = getUnionFind().getElement(idx).m_sz;
btCollisionObject* colObj0 = collisionObjects[i];
if ((colObj0->getIslandTag() != islandId) && (colObj0->getIslandTag() != -1))
{
// printf("error in island management\n");
}
btAssert((colObj0->getIslandTag() == islandId) || (colObj0->getIslandTag() == -1));
if (colObj0->getIslandTag() == islandId)
{
if (colObj0->getActivationState()== ACTIVE_TAG)
{
allSleeping = false;
}
if (colObj0->getActivationState()== DISABLE_DEACTIVATION)
{
allSleeping = false;
}
}
}
if (allSleeping)
{
int idx;
for (idx=startIslandIndex;idx<endIslandIndex;idx++)
{
int i = getUnionFind().getElement(idx).m_sz;
btCollisionObject* colObj0 = collisionObjects[i];
if ((colObj0->getIslandTag() != islandId) && (colObj0->getIslandTag() != -1))
{
// printf("error in island management\n");
}
btAssert((colObj0->getIslandTag() == islandId) || (colObj0->getIslandTag() == -1));
if (colObj0->getIslandTag() == islandId)
{
colObj0->setActivationState( ISLAND_SLEEPING );
}
}
} else
{
int idx;
for (idx=startIslandIndex;idx<endIslandIndex;idx++)
{
int i = getUnionFind().getElement(idx).m_sz;
btCollisionObject* colObj0 = collisionObjects[i];
if ((colObj0->getIslandTag() != islandId) && (colObj0->getIslandTag() != -1))
{
// printf("error in island management\n");
}
btAssert((colObj0->getIslandTag() == islandId) || (colObj0->getIslandTag() == -1));
if (colObj0->getIslandTag() == islandId)
{
if ( colObj0->getActivationState() == ISLAND_SLEEPING)
{
colObj0->setActivationState( WANTS_DEACTIVATION);
colObj0->setDeactivationTime(0.f);
}
}
}
}
}
}
///@todo: this is random access, it can be walked 'cache friendly'!
void btSimulationIslandManager::buildAndProcessIslands(btDispatcher* dispatcher,btCollisionWorld* collisionWorld, IslandCallback* callback)
{
btCollisionObjectArray& collisionObjects = collisionWorld->getCollisionObjectArray();
buildIslands(dispatcher,collisionWorld);
int endIslandIndex=1;
int startIslandIndex;
int numElem = getUnionFind().getNumElements();
BT_PROFILE("processIslands");
if(!m_splitIslands)
{
btPersistentManifold** manifold = dispatcher->getInternalManifoldPointer();
int maxNumManifolds = dispatcher->getNumManifolds();
callback->ProcessIsland(&collisionObjects[0],collisionObjects.size(),manifold,maxNumManifolds, -1);
}
else
{
// Sort manifolds, based on islands
// Sort the vector using predicate and std::sort
//std::sort(islandmanifold.begin(), islandmanifold.end(), btPersistentManifoldSortPredicate);
int numManifolds = int (m_islandmanifold.size());
//we should do radix sort, it it much faster (O(n) instead of O (n log2(n))
m_islandmanifold.quickSort(btPersistentManifoldSortPredicate());
//now process all active islands (sets of manifolds for now)
int startManifoldIndex = 0;
int endManifoldIndex = 1;
//int islandId;
// printf("Start Islands\n");
//traverse the simulation islands, and call the solver, unless all objects are sleeping/deactivated
for ( startIslandIndex=0;startIslandIndex<numElem;startIslandIndex = endIslandIndex)
{
int islandId = getUnionFind().getElement(startIslandIndex).m_id;
bool islandSleeping = false;
for (endIslandIndex = startIslandIndex;(endIslandIndex<numElem) && (getUnionFind().getElement(endIslandIndex).m_id == islandId);endIslandIndex++)
{
int i = getUnionFind().getElement(endIslandIndex).m_sz;
btCollisionObject* colObj0 = collisionObjects[i];
m_islandBodies.push_back(colObj0);
if (!colObj0->isActive())
islandSleeping = true;
}
//find the accompanying contact manifold for this islandId
int numIslandManifolds = 0;
btPersistentManifold** startManifold = 0;
if (startManifoldIndex<numManifolds)
{
int curIslandId = getIslandId(m_islandmanifold[startManifoldIndex]);
if (curIslandId == islandId)
{
startManifold = &m_islandmanifold[startManifoldIndex];
for (endManifoldIndex = startManifoldIndex+1;(endManifoldIndex<numManifolds) && (islandId == getIslandId(m_islandmanifold[endManifoldIndex]));endManifoldIndex++)
{
}
/// Process the actual simulation, only if not sleeping/deactivated
numIslandManifolds = endManifoldIndex-startManifoldIndex;
}
}
if (!islandSleeping)
{
callback->ProcessIsland(&m_islandBodies[0],m_islandBodies.size(),startManifold,numIslandManifolds, islandId);
// printf("Island callback of size:%d bodies, %d manifolds\n",islandBodies.size(),numIslandManifolds);
}
if (numIslandManifolds)
{
startManifoldIndex = endManifoldIndex;
}
m_islandBodies.resize(0);
}
} // else if(!splitIslands)
}
///@todo: this is random access, it can be walked 'cache friendly'!
void btSimulationIslandManager::buildAndProcessIslands( btDispatcher* dispatcher,
btCollisionWorld* collisionWorld,
btAlignedObjectArray<btTypedConstraint*>& constraints,
IslandCallback* callback
)
{
btCollisionObjectArray& collisionObjects = collisionWorld->getCollisionObjectArray();
buildIslands(dispatcher,collisionWorld);
BT_PROFILE("processIslands");
if(!m_splitIslands)
{
btPersistentManifold** manifolds = dispatcher->getInternalManifoldPointer();
int maxNumManifolds = dispatcher->getNumManifolds();
for ( int i = 0; i < maxNumManifolds; i++ )
{
btPersistentManifold* manifold = manifolds[ i ];
const btCollisionObject* colObj0 = static_cast<const btCollisionObject*>( manifold->getBody0() );
const btCollisionObject* colObj1 = static_cast<const btCollisionObject*>( manifold->getBody1() );
///@todo: check sleeping conditions!
if ( ( ( colObj0 ) && colObj0->getActivationState() != ISLAND_SLEEPING ) ||
( ( colObj1 ) && colObj1->getActivationState() != ISLAND_SLEEPING ) )
{
//kinematic objects don't merge islands, but wake up all connected objects
if ( colObj0->isKinematicObject() && colObj0->getActivationState() != ISLAND_SLEEPING )
{
if ( colObj0->hasContactResponse() )
colObj1->activate();
}
if ( colObj1->isKinematicObject() && colObj1->getActivationState() != ISLAND_SLEEPING )
{
if ( colObj1->hasContactResponse() )
colObj0->activate();
}
}
}
btTypedConstraint** constraintsPtr = constraints.size() ? &constraints[ 0 ] : NULL;
callback->processIsland(&collisionObjects[0],
collisionObjects.size(),
manifolds,
maxNumManifolds,
constraintsPtr,
constraints.size(),
-1
);
}
else
{
initIslandPools();
//traverse the simulation islands, and call the solver, unless all objects are sleeping/deactivated
addBodiesToIslands( collisionWorld );
addManifoldsToIslands( dispatcher );
addConstraintsToIslands( constraints );
// m_activeIslands array should now contain all non-sleeping Islands, and each Island should
// have all the necessary bodies, manifolds and constraints.
// if we want to merge islands with small batch counts,
if ( m_minimumSolverBatchSize > 1 )
{
mergeIslands();
}
// dispatch islands to solver
m_islandDispatch( &m_activeIslands, callback );
}
}
void btMultiBodyDynamicsWorld::solveConstraints(btContactSolverInfo& solverInfo)
{
btAlignedObjectArray<btScalar> scratch_r;
btAlignedObjectArray<btVector3> scratch_v;
btAlignedObjectArray<btMatrix3x3> scratch_m;
BT_PROFILE("solveConstraints");
m_sortedConstraints.resize( m_constraints.size());
int i;
for (i=0;i<getNumConstraints();i++)
{
m_sortedConstraints[i] = m_constraints[i];
}
m_sortedConstraints.quickSort(btSortConstraintOnIslandPredicate2());
btTypedConstraint** constraintsPtr = getNumConstraints() ? &m_sortedConstraints[0] : 0;
m_sortedMultiBodyConstraints.resize(m_multiBodyConstraints.size());
for (i=0;i<m_multiBodyConstraints.size();i++)
{
m_sortedMultiBodyConstraints[i] = m_multiBodyConstraints[i];
}
m_sortedMultiBodyConstraints.quickSort(btSortMultiBodyConstraintOnIslandPredicate());
btMultiBodyConstraint** sortedMultiBodyConstraints = m_sortedMultiBodyConstraints.size() ? &m_sortedMultiBodyConstraints[0] : 0;
m_solverMultiBodyIslandCallback->setup(&solverInfo,constraintsPtr,m_sortedConstraints.size(),sortedMultiBodyConstraints,m_sortedMultiBodyConstraints.size(), getDebugDrawer());
m_constraintSolver->prepareSolve(getCollisionWorld()->getNumCollisionObjects(), getCollisionWorld()->getDispatcher()->getNumManifolds());
/// solve all the constraints for this island
m_islandManager->buildAndProcessIslands(getCollisionWorld()->getDispatcher(),getCollisionWorld(),m_solverMultiBodyIslandCallback);
{
BT_PROFILE("btMultiBody addForce and stepVelocities");
for (int i=0;i<this->m_multiBodies.size();i++)
{
btMultiBody* bod = m_multiBodies[i];
bool isSleeping = false;
if (bod->getBaseCollider() && bod->getBaseCollider()->getActivationState() == ISLAND_SLEEPING)
{
isSleeping = true;
}
for (int b=0;b<bod->getNumLinks();b++)
{
if (bod->getLink(b).m_collider && bod->getLink(b).m_collider->getActivationState()==ISLAND_SLEEPING)
isSleeping = true;
}
if (!isSleeping)
{
scratch_r.resize(bod->getNumLinks()+1);
scratch_v.resize(bod->getNumLinks()+1);
scratch_m.resize(bod->getNumLinks()+1);
bod->clearForcesAndTorques();
bod->addBaseForce(m_gravity * bod->getBaseMass());
for (int j = 0; j < bod->getNumLinks(); ++j)
{
bod->addLinkForce(j, m_gravity * bod->getLinkMass(j));
}
bod->stepVelocities(solverInfo.m_timeStep, scratch_r, scratch_v, scratch_m);
}
}
}
m_solverMultiBodyIslandCallback->processConstraints();
m_constraintSolver->allSolved(solverInfo, m_debugDrawer);
}
void btGpu3DGridBroadphase::calcHashAABB()
{
BT_PROFILE("bt3DGrid_calcHashAABB");
btGpu_calcHashAABB(m_hAABB, m_hBodiesHash, m_numHandles);
return;
}
int btDiscreteDynamicsWorld::stepSimulation( btScalar timeStep,int maxSubSteps, btScalar fixedTimeStep)
{
startProfiling(timeStep);
BT_PROFILE("stepSimulation");
int numSimulationSubSteps = 0;
if (maxSubSteps)
{
//fixed timestep with interpolation
m_localTime += timeStep;
if (m_localTime >= fixedTimeStep)
{
numSimulationSubSteps = int( m_localTime / fixedTimeStep);
m_localTime -= numSimulationSubSteps * fixedTimeStep;
}
} else
{
//variable timestep
fixedTimeStep = timeStep;
m_localTime = timeStep;
if (btFuzzyZero(timeStep))
{
numSimulationSubSteps = 0;
maxSubSteps = 0;
} else
{
numSimulationSubSteps = 1;
maxSubSteps = 1;
}
}
//process some debugging flags
if (getDebugDrawer())
{
btIDebugDraw* debugDrawer = getDebugDrawer ();
gDisableDeactivation = (debugDrawer->getDebugMode() & btIDebugDraw::DBG_NoDeactivation) != 0;
}
if (numSimulationSubSteps)
{
//clamp the number of substeps, to prevent simulation grinding spiralling down to a halt
int clampedSimulationSteps = (numSimulationSubSteps > maxSubSteps)? maxSubSteps : numSimulationSubSteps;
saveKinematicState(fixedTimeStep*clampedSimulationSteps);
applyGravity();
for (int i=0;i<clampedSimulationSteps;i++)
{
internalSingleStepSimulation(fixedTimeStep);
synchronizeMotionStates();
}
} else
{
synchronizeMotionStates();
}
clearForces();
#ifndef BT_NO_PROFILE
CProfileManager::Increment_Frame_Counter();
#endif //BT_NO_PROFILE
return numSimulationSubSteps;
}
void btGpu3DGridBroadphase::findCellStart()
{
BT_PROFILE("bt3DGrid_findCellStart");
btGpu_findCellStart(m_hBodiesHash, m_hCellStart, m_numHandles, m_params.m_numCells);
return;
}
void btDiscreteDynamicsWorld::integrateTransforms(btScalar timeStep)
{
BT_PROFILE("integrateTransforms");
btTransform predictedTrans;
for ( int i=0;i<m_nonStaticRigidBodies.size();i++)
{
btRigidBody* body = m_nonStaticRigidBodies[i];
body->setHitFraction(1.f);
if (body->isActive() && (!body->isStaticOrKinematicObject()))
{
body->predictIntegratedTransform(timeStep, predictedTrans);
btScalar squareMotion = (predictedTrans.getOrigin()-body->getWorldTransform().getOrigin()).length2();
if (getDispatchInfo().m_useContinuous && body->getCcdSquareMotionThreshold() && body->getCcdSquareMotionThreshold() < squareMotion)
{
BT_PROFILE("CCD motion clamping");
if (body->getCollisionShape()->isConvex())
{
gNumClampedCcdMotions++;
#ifdef USE_STATIC_ONLY
class StaticOnlyCallback : public btClosestNotMeConvexResultCallback
{
public:
StaticOnlyCallback (btCollisionObject* me,const btVector3& fromA,const btVector3& toA,btOverlappingPairCache* pairCache,btDispatcher* dispatcher) :
btClosestNotMeConvexResultCallback(me,fromA,toA,pairCache,dispatcher)
{
}
virtual bool needsCollision(btBroadphaseProxy* proxy0) const
{
btCollisionObject* otherObj = (btCollisionObject*) proxy0->m_clientObject;
if (!otherObj->isStaticOrKinematicObject())
return false;
return btClosestNotMeConvexResultCallback::needsCollision(proxy0);
}
};
StaticOnlyCallback sweepResults(body,body->getWorldTransform().getOrigin(),predictedTrans.getOrigin(),getBroadphase()->getOverlappingPairCache(),getDispatcher());
#else
btClosestNotMeConvexResultCallback sweepResults(body,body->getWorldTransform().getOrigin(),predictedTrans.getOrigin(),getBroadphase()->getOverlappingPairCache(),getDispatcher());
#endif
//btConvexShape* convexShape = static_cast<btConvexShape*>(body->getCollisionShape());
btSphereShape tmpSphere(body->getCcdSweptSphereRadius());//btConvexShape* convexShape = static_cast<btConvexShape*>(body->getCollisionShape());
sweepResults.m_allowedPenetration=getDispatchInfo().m_allowedCcdPenetration;
sweepResults.m_collisionFilterGroup = body->getBroadphaseProxy()->m_collisionFilterGroup;
sweepResults.m_collisionFilterMask = body->getBroadphaseProxy()->m_collisionFilterMask;
btTransform modifiedPredictedTrans = predictedTrans;
modifiedPredictedTrans.setBasis(body->getWorldTransform().getBasis());
convexSweepTest(&tmpSphere,body->getWorldTransform(),modifiedPredictedTrans,sweepResults);
if (sweepResults.hasHit() && (sweepResults.m_closestHitFraction < 1.f))
{
//printf("clamped integration to hit fraction = %f\n",fraction);
body->setHitFraction(sweepResults.m_closestHitFraction);
body->predictIntegratedTransform(timeStep*body->getHitFraction(), predictedTrans);
body->setHitFraction(0.f);
body->proceedToTransform( predictedTrans);
#if 0
btVector3 linVel = body->getLinearVelocity();
btScalar maxSpeed = body->getCcdMotionThreshold()/getSolverInfo().m_timeStep;
btScalar maxSpeedSqr = maxSpeed*maxSpeed;
if (linVel.length2()>maxSpeedSqr)
{
linVel.normalize();
linVel*= maxSpeed;
body->setLinearVelocity(linVel);
btScalar ms2 = body->getLinearVelocity().length2();
body->predictIntegratedTransform(timeStep, predictedTrans);
btScalar sm2 = (predictedTrans.getOrigin()-body->getWorldTransform().getOrigin()).length2();
btScalar smt = body->getCcdSquareMotionThreshold();
printf("sm2=%f\n",sm2);
}
#else
//don't apply the collision response right now, it will happen next frame
//if you really need to, you can uncomment next 3 lines. Note that is uses zero restitution.
//btScalar appliedImpulse = 0.f;
//btScalar depth = 0.f;
//appliedImpulse = resolveSingleCollision(body,(btCollisionObject*)sweepResults.m_hitCollisionObject,sweepResults.m_hitPointWorld,sweepResults.m_hitNormalWorld,getSolverInfo(), depth);
#endif
continue;
}
}
}
body->proceedToTransform( predictedTrans);
}
}
///this should probably be switched on by default, but it is not well tested yet
if (m_applySpeculativeContactRestitution)
{
BT_PROFILE("apply speculative contact restitution");
for (int i=0;i<m_predictiveManifolds.size();i++)
{
btPersistentManifold* manifold = m_predictiveManifolds[i];
btRigidBody* body0 = btRigidBody::upcast((btCollisionObject*)manifold->getBody0());
btRigidBody* body1 = btRigidBody::upcast((btCollisionObject*)manifold->getBody1());
for (int p=0;p<manifold->getNumContacts();p++)
{
const btManifoldPoint& pt = manifold->getContactPoint(p);
btScalar combinedRestitution = btManifoldResult::calculateCombinedRestitution(body0, body1);
if (combinedRestitution>0 && pt.m_appliedImpulse != 0.f)
//if (pt.getDistance()>0 && combinedRestitution>0 && pt.m_appliedImpulse != 0.f)
{
btVector3 imp = -pt.m_normalWorldOnB * pt.m_appliedImpulse* combinedRestitution;
const btVector3& pos1 = pt.getPositionWorldOnA();
const btVector3& pos2 = pt.getPositionWorldOnB();
btVector3 rel_pos0 = pos1 - body0->getWorldTransform().getOrigin();
btVector3 rel_pos1 = pos2 - body1->getWorldTransform().getOrigin();
if (body0)
body0->applyImpulse(imp,rel_pos0);
if (body1)
body1->applyImpulse(-imp,rel_pos1);
}
}
}
}
}
void btGpu3DGridBroadphase::findOverlappingPairs()
{
BT_PROFILE("bt3DGrid_findOverlappingPairs");
btGpu_findOverlappingPairs(m_hAABB, m_hBodiesHash, m_hCellStart, m_hPairBuff, m_hPairBuffStartCurr, m_numHandles);
return;
}
void Solver::solveContactConstraint( const btOpenCLArray<RigidBodyBase::Body>* bodyBuf, const btOpenCLArray<RigidBodyBase::Inertia>* shapeBuf,
btOpenCLArray<Constraint4>* constraint, void* additionalData, int n ,int maxNumBatches)
{
btInt4 cdata = btMakeInt4( n, 0, 0, 0 );
{
const int nn = N_SPLIT*N_SPLIT;
cdata.x = 0;
cdata.y = maxNumBatches;//250;
int numWorkItems = 64*nn/N_BATCHES;
#ifdef DEBUG_ME
SolverDebugInfo* debugInfo = new SolverDebugInfo[numWorkItems];
adl::btOpenCLArray<SolverDebugInfo> gpuDebugInfo(data->m_device,numWorkItems);
#endif
{
BT_PROFILE("m_batchSolveKernel iterations");
for(int iter=0; iter<m_nIterations; iter++)
{
for(int ib=0; ib<N_BATCHES; ib++)
{
#ifdef DEBUG_ME
memset(debugInfo,0,sizeof(SolverDebugInfo)*numWorkItems);
gpuDebugInfo.write(debugInfo,numWorkItems);
#endif
cdata.z = ib;
cdata.w = N_SPLIT;
btLauncherCL launcher( m_queue, m_solveContactKernel );
#if 1
btBufferInfoCL bInfo[] = {
btBufferInfoCL( bodyBuf->getBufferCL() ),
btBufferInfoCL( shapeBuf->getBufferCL() ),
btBufferInfoCL( constraint->getBufferCL() ),
btBufferInfoCL( m_numConstraints->getBufferCL() ),
btBufferInfoCL( m_offsets->getBufferCL() )
#ifdef DEBUG_ME
, btBufferInfoCL(&gpuDebugInfo)
#endif
};
launcher.setBuffers( bInfo, sizeof(bInfo)/sizeof(btBufferInfoCL) );
//launcher.setConst( cdata.x );
launcher.setConst( cdata.y );
launcher.setConst( cdata.z );
launcher.setConst( cdata.w );
launcher.launch1D( numWorkItems, 64 );
#else
const char* fileName = "m_batchSolveKernel.bin";
FILE* f = fopen(fileName,"rb");
if (f)
{
int sizeInBytes=0;
if (fseek(f, 0, SEEK_END) || (sizeInBytes = ftell(f)) == EOF || fseek(f, 0, SEEK_SET))
{
printf("error, cannot get file size\n");
exit(0);
}
unsigned char* buf = (unsigned char*) malloc(sizeInBytes);
fread(buf,sizeInBytes,1,f);
int serializedBytes = launcher.deserializeArgs(buf, sizeInBytes,m_context);
int num = *(int*)&buf[serializedBytes];
launcher.launch1D( num);
//this clFinish is for testing on errors
clFinish(m_queue);
}
#endif
#ifdef DEBUG_ME
clFinish(m_queue);
gpuDebugInfo.read(debugInfo,numWorkItems);
clFinish(m_queue);
for (int i=0;i<numWorkItems;i++)
{
if (debugInfo[i].m_valInt2>0)
{
printf("debugInfo[i].m_valInt2 = %d\n",i,debugInfo[i].m_valInt2);
}
if (debugInfo[i].m_valInt3>0)
{
printf("debugInfo[i].m_valInt3 = %d\n",i,debugInfo[i].m_valInt3);
}
}
#endif //DEBUG_ME
}
}
clFinish(m_queue);
}
cdata.x = 1;
bool applyFriction=true;
if (applyFriction)
{
BT_PROFILE("m_batchSolveKernel iterations2");
for(int iter=0; iter<m_nIterations; iter++)
{
for(int ib=0; ib<N_BATCHES; ib++)
{
cdata.z = ib;
cdata.w = N_SPLIT;
btBufferInfoCL bInfo[] = {
btBufferInfoCL( bodyBuf->getBufferCL() ),
btBufferInfoCL( shapeBuf->getBufferCL() ),
btBufferInfoCL( constraint->getBufferCL() ),
btBufferInfoCL( m_numConstraints->getBufferCL() ),
btBufferInfoCL( m_offsets->getBufferCL() )
#ifdef DEBUG_ME
,btBufferInfoCL(&gpuDebugInfo)
#endif //DEBUG_ME
};
btLauncherCL launcher( m_queue, m_solveFrictionKernel );
launcher.setBuffers( bInfo, sizeof(bInfo)/sizeof(btBufferInfoCL) );
//launcher.setConst( cdata.x );
launcher.setConst( cdata.y );
launcher.setConst( cdata.z );
launcher.setConst( cdata.w );
launcher.launch1D( 64*nn/N_BATCHES, 64 );
}
}
clFinish(m_queue);
}
#ifdef DEBUG_ME
delete[] debugInfo;
#endif //DEBUG_ME
}
}
void btDiscreteDynamicsWorld::integrateTransforms(btScalar timeStep)
{
BT_PROFILE("integrateTransforms");
btTransform predictedTrans;
for ( int i=0;i<m_nonStaticRigidBodies.size();i++)
{
btRigidBody* body = m_nonStaticRigidBodies[i];
body->setHitFraction(1.f);
if (body->isActive() && (!body->isStaticOrKinematicObject()))
{
body->predictIntegratedTransform(timeStep, predictedTrans);
btScalar squareMotion = (predictedTrans.getOrigin()-body->getWorldTransform().getOrigin()).length2();
if (getDispatchInfo().m_useContinuous && body->getCcdSquareMotionThreshold() && body->getCcdSquareMotionThreshold() < squareMotion)
{
BT_PROFILE("CCD motion clamping");
// Urho3D: Rigid bodies always use a compound shape to allow offset positions, so do not check for being convex here
//if (body->getCollisionShape()->isConvex())
{
gNumClampedCcdMotions++;
#ifdef USE_STATIC_ONLY
class StaticOnlyCallback : public btClosestNotMeConvexResultCallback
{
public:
StaticOnlyCallback (btCollisionObject* me,const btVector3& fromA,const btVector3& toA,btOverlappingPairCache* pairCache,btDispatcher* dispatcher) :
btClosestNotMeConvexResultCallback(me,fromA,toA,pairCache,dispatcher)
{
}
virtual bool needsCollision(btBroadphaseProxy* proxy0) const
{
btCollisionObject* otherObj = (btCollisionObject*) proxy0->m_clientObject;
if (!otherObj->isStaticOrKinematicObject())
return false;
return btClosestNotMeConvexResultCallback::needsCollision(proxy0);
}
};
StaticOnlyCallback sweepResults(body,body->getWorldTransform().getOrigin(),predictedTrans.getOrigin(),getBroadphase()->getOverlappingPairCache(),getDispatcher());
#else
btClosestNotMeConvexResultCallback sweepResults(body,body->getWorldTransform().getOrigin(),predictedTrans.getOrigin(),getBroadphase()->getOverlappingPairCache(),getDispatcher());
#endif
//btConvexShape* convexShape = static_cast<btConvexShape*>(body->getCollisionShape());
btSphereShape tmpSphere(body->getCcdSweptSphereRadius());//btConvexShape* convexShape = static_cast<btConvexShape*>(body->getCollisionShape());
sweepResults.m_allowedPenetration=getDispatchInfo().m_allowedCcdPenetration;
sweepResults.m_collisionFilterGroup = body->getBroadphaseProxy()->m_collisionFilterGroup;
sweepResults.m_collisionFilterMask = body->getBroadphaseProxy()->m_collisionFilterMask;
btTransform modifiedPredictedTrans = predictedTrans;
modifiedPredictedTrans.setBasis(body->getWorldTransform().getBasis());
convexSweepTest(&tmpSphere,body->getWorldTransform(),modifiedPredictedTrans,sweepResults);
if (sweepResults.hasHit() && (sweepResults.m_closestHitFraction < 1.f))
{
//printf("clamped integration to hit fraction = %f\n",fraction);
body->setHitFraction(sweepResults.m_closestHitFraction);
body->predictIntegratedTransform(timeStep*body->getHitFraction(), predictedTrans);
body->setHitFraction(0.f);
body->proceedToTransform( predictedTrans);
#if 0
btVector3 linVel = body->getLinearVelocity();
btScalar maxSpeed = body->getCcdMotionThreshold()/getSolverInfo().m_timeStep;
btScalar maxSpeedSqr = maxSpeed*maxSpeed;
if (linVel.length2()>maxSpeedSqr)
{
linVel.normalize();
linVel*= maxSpeed;
body->setLinearVelocity(linVel);
btScalar ms2 = body->getLinearVelocity().length2();
body->predictIntegratedTransform(timeStep, predictedTrans);
btScalar sm2 = (predictedTrans.getOrigin()-body->getWorldTransform().getOrigin()).length2();
btScalar smt = body->getCcdSquareMotionThreshold();
printf("sm2=%f\n",sm2);
}
#else
//response between two dynamic objects without friction, assuming 0 penetration depth
btScalar appliedImpulse = 0.f;
btScalar depth = 0.f;
appliedImpulse = resolveSingleCollision(body,sweepResults.m_hitCollisionObject,sweepResults.m_hitPointWorld,sweepResults.m_hitNormalWorld,getSolverInfo(), depth);
#endif
continue;
}
}
}
body->proceedToTransform( predictedTrans);
}
}
}