42                 leastSquaredResidual += residual*residual;
    61                 leastSquaredResidual += residual*residual;
    83                                 leastSquaredResidual += residual*residual;
    92         return leastSquaredResidual;
   104         for (
int i=0;i<numBodies;i++)
   120     for (
int i = 0; i < ndof; ++i) 
   138                 for (
int i = 0; i < ndofA; ++i) 
   149                 for (
int i = 0; i < ndofB; ++i) 
   180 #ifdef DIRECTLY_UPDATE_VELOCITY_DURING_SOLVER_ITERATIONS   184 #endif //DIRECTLY_UPDATE_VELOCITY_DURING_SOLVER_ITERATIONS   193 #ifdef DIRECTLY_UPDATE_VELOCITY_DURING_SOLVER_ITERATIONS   197 #endif //DIRECTLY_UPDATE_VELOCITY_DURING_SOLVER_ITERATIONS   215         BT_PROFILE(
"setupMultiBodyContactConstraint");
   236         relaxation = infoGlobal.
m_sor;
   272                 if (solverConstraint.
m_linkA<0)
   279                 const int ndofA  = multiBodyA->
getNumDofs() + 6;
   318                 if (solverConstraint.
m_linkB<0)
   326                 const int ndofB  = multiBodyB->
getNumDofs() + 6;
   373                         for (
int i = 0; i < ndofA; ++i)
   389                         const int ndofB  = multiBodyB->
getNumDofs() + 6;
   392                         for (
int i = 0; i < ndofB; ++i)
   440                         for (
int i = 0; i < ndofA ; ++i) 
   455                         for (
int i = 0; i < ndofB ; ++i) 
   523                 btScalar velocityError = restitution - rel_vel;
   528                         velocityError -= penetration / infoGlobal.
m_timeStep;
   532                         positionalError = -penetration * erp/infoGlobal.
m_timeStep;
   543                                 solverConstraint.
m_rhs = penetrationImpulse+velocityImpulse;
   559                         solverConstraint.
m_rhs = velocityImpulse;
   582     BT_PROFILE(
"setupMultiBodyRollingFrictionConstraint");
   603     relaxation = infoGlobal.
m_sor;
   610         if (solverConstraint.
m_linkA<0)
   617         const int ndofA  = multiBodyA->
getNumDofs() + 6;
   641         btVector3 torqueAxis0 = constraintNormal;
   646         btVector3 torqueAxis0 = constraintNormal;
   656         if (solverConstraint.
m_linkB<0)
   664         const int ndofB  = multiBodyB->
getNumDofs() + 6;
   683         btVector3 torqueAxis1 = constraintNormal;
   689         btVector3 torqueAxis1 = constraintNormal;
   711             for (
int i = 0; i < ndofA; ++i)
   727             const int ndofB  = multiBodyB->
getNumDofs() + 6;
   730             for (
int i = 0; i < ndofB; ++i)
   778             for (
int i = 0; i < ndofA ; ++i)
   791             for (
int i = 0; i < ndofB ; ++i)
   802         solverConstraint.
m_friction =combinedTorsionalFriction;
   820         btScalar velocityError = restitution - rel_vel;
   824             velocityError -= penetration / infoGlobal.
m_timeStep;
   829         solverConstraint.
m_rhs = velocityImpulse;
   850         bool isFriction = 
true;
   869                 solverConstraint.
m_linkB = fcB->m_link;
   874         return solverConstraint;
   881     BT_PROFILE(
"addMultiBodyRollingFrictionConstraint");
   887     bool isFriction = 
true;
   906         solverConstraint.
m_linkB = fcB->m_link;
   911     return solverConstraint;
   939     int rollingFriction=1;
   967                                 solverConstraint.
m_linkB = fcB->m_link;
   971                         bool isFriction = 
false;
   978 #define ENABLE_FRICTION   979 #ifdef ENABLE_FRICTION  1027                     if (rollingFriction > 0)
  1063 #endif //ENABLE_FRICTION  1073         for (
int i=0;i<numManifolds;i++)
  1117                 forceVector.
resize(numDofsPlusBase);
  1118                 for (
int i=0;i<numDofsPlusBase;i++)
  1120                         forceVector[i] = data.
m_jacobians[jacIndex+i]*appliedImpulse;
  1123                 output.
resize(numDofsPlusBase);
  1124                 bool applyJointFeedback = 
true;
  1185 #ifndef DIRECTLY_UPDATE_VELOCITY_DURING_SOLVER_ITERATIONS  1219         BT_PROFILE(
"btMultiBodyConstraintSolver::solveGroupCacheFriendlyFinish");
  1225         for (
int i=0;i<numPoolConstraints;i++)
  1249                 for (
int j=0;j<numPoolConstraints;j++)
  1269                 for (
int j=0;j<numPoolConstraints;j++)
  1340         for (
int i=0;i<numPoolConstraints;i++)
  1369 void  btMultiBodyConstraintSolver::solveMultiBodyGroup(
btCollisionObject** bodies,
int numBodies,
btPersistentManifold** manifold,
int numManifolds,
btTypedConstraint** constraints,
int numConstraints,
btMultiBodyConstraint** multiBodyConstraints, 
int numMultiBodyConstraints, 
const btContactSolverInfo& info, 
btIDebugDraw* debugDrawer,
btDispatcher* dispatcher)
 static T sum(const btAlignedObjectArray< T > &items)
btScalar m_rhsPenetration
btPersistentManifold is a contact point cache, it stays persistent as long as objects are overlapping...
static btMultiBodyLinkCollider * upcast(btCollisionObject *colObj)
const btVector3 & getBasePos() const
virtual btScalar solveGroupCacheFriendlyFinish(btCollisionObject **bodies, int numBodies, const btContactSolverInfo &infoGlobal)
void setupMultiBodyContactConstraint(btMultiBodySolverConstraint &solverConstraint, const btVector3 &contactNormal, btManifoldPoint &cp, const btContactSolverInfo &infoGlobal, btScalar &relaxation, bool isFriction, btScalar desiredVelocity=0, btScalar cfmSlip=0)
btVector3 m_relpos1CrossNormal
bool internalNeedsJointFeedback() const
const btVector3 & getPositionWorldOnA() const
1D constraint along a normal axis between bodyA and bodyB. It can be combined to solve contact and fr...
btVector3 m_contactNormal2
btScalar m_combinedContactStiffness1
btVector3 m_lateralFrictionDir1
btAlignedObjectArray< btScalar > scratch_r
const btVector3 & getTotalTorque() const
btAlignedObjectArray< btScalar > m_deltaVelocities
virtual void createConstraintRows(btMultiBodyConstraintArray &constraintRows, btMultiBodyJacobianData &data, const btContactSolverInfo &infoGlobal)=0
void internalApplyImpulse(const btVector3 &linearComponent, const btVector3 &angularComponent, const btScalar impulseMagnitude)
btAlignedObjectArray< btSolverBody > * m_solverBodyPool
btScalar m_appliedImpulseLateral1
virtual btScalar solveSingleIteration(int iteration, btCollisionObject **bodies, int numBodies, btPersistentManifold **manifoldPtr, int numManifolds, btTypedConstraint **constraints, int numConstraints, const btContactSolverInfo &infoGlobal, btIDebugDraw *debugDrawer)
virtual btScalar solveGroupCacheFriendlyFinish(btCollisionObject **bodies, int numBodies, const btContactSolverInfo &infoGlobal)
btVector3 m_angularComponentA
void writeBackSolverBodyToMultiBody(btMultiBodySolverConstraint &constraint, btScalar deltaTime)
btVector3 m_angularComponentB
btScalar m_combinedRestitution
virtual btScalar solveGroup(btCollisionObject **bodies, int numBodies, btPersistentManifold **manifold, int numManifolds, btTypedConstraint **constraints, int numConstraints, const btContactSolverInfo &info, btIDebugDraw *debugDrawer, btDispatcher *dispatcher)
btSequentialImpulseConstraintSolver Sequentially applies impulses 
btMultiBodyConstraint * m_orgConstraint
void internalSetAppliedImpulse(int dof, btScalar appliedImpulse)
const btRigidBody & getRigidBodyA() const
int getNumContacts() const
void btPlaneSpace1(const T &n, T &p, T &q)
btScalar m_appliedImpulse
void addLinkConstraintForce(int i, const btVector3 &f)
const btVector3 & getLinearFactor() const
virtual btScalar solveSingleIteration(int iteration, btCollisionObject **bodies, int numBodies, btPersistentManifold **manifoldPtr, int numManifolds, btTypedConstraint **constraints, int numConstraints, const btContactSolverInfo &infoGlobal, btIDebugDraw *debugDrawer)
int getCompanionId() const
const btVector3 & internalGetInvMass() const
const btJointFeedback * getJointFeedback() const
ManifoldContactPoint collects and maintains persistent contactpoints. 
btScalar m_contactMotion1
void calcAccelerationDeltasMultiDof(const btScalar *force, btScalar *output, btAlignedObjectArray< btScalar > &scratch_r, btAlignedObjectArray< btVector3 > &scratch_v) const
int m_tmpNumMultiBodyConstraints
const btRigidBody & getRigidBodyB() const
void applyDeltaVeeMultiDof(const btScalar *delta_vee, btScalar multiplier)
btScalar getBreakingImpulseThreshold() const
const btVector3 & getAngularFactor() const
btScalar resolveSingleConstraintRowGeneric(const btMultiBodySolverConstraint &c)
btScalar restitutionCurve(btScalar rel_vel, btScalar restitution)
btAlignedObjectArray< btMatrix3x3 > scratch_m
virtual btScalar solveGroup(btCollisionObject **bodies, int numBodies, btPersistentManifold **manifold, int numManifolds, btTypedConstraint **constraints, int numConstraints, const btContactSolverInfo &info, btIDebugDraw *debugDrawer, btDispatcher *dispatcher)
this method should not be called, it was just used during porting/integration of Featherstone btMulti...
btMultiBodyConstraintArray m_multiBodyNonContactConstraints
int getOrInitSolverBody(btCollisionObject &body, btScalar timeStep)
const btManifoldPoint & getContactPoint(int index) const
btAlignedObjectArray< btScalar > m_deltaVelocitiesUnitImpulse
void addLinkConstraintTorque(int i, const btVector3 &t)
#define btSimdScalar
Until we get other contributions, only use SIMD on Windows, when using Visual Studio 2008 or later...
btScalar m_combinedRollingFriction
btAlignedObjectArray< btSolverBody > m_tmpSolverBodyPool
btMultiBodySolverConstraint & addMultiBodyTorsionalFrictionConstraint(const btVector3 &normalAxis, btPersistentManifold *manifold, int frictionIndex, btManifoldPoint &cp, btScalar combinedTorsionalFriction, btCollisionObject *colObj0, btCollisionObject *colObj1, btScalar relaxation, const btContactSolverInfo &infoGlobal, btScalar desiredVelocity=0, btScalar cfmSlip=0)
btVector3 m_normalWorldOnB
virtual void solveMultiBodyGroup(btCollisionObject **bodies, int numBodies, btPersistentManifold **manifold, int numManifolds, btTypedConstraint **constraints, int numConstraints, btMultiBodyConstraint **multiBodyConstraints, int numMultiBodyConstraints, const btContactSolverInfo &info, btIDebugDraw *debugDrawer, btDispatcher *dispatcher)
btVector3 m_appliedForceBodyA
btMultiBody * m_multiBodyA
const btVector3 & getPositionWorldOnB() const
const btCollisionObject * getBody0() const
void setCompanionId(int id)
btScalar m_appliedImpulseLateral2
btScalar getInvMass() const
btVector3 cross(const btVector3 &v) const
Return the cross product between this and another vector. 
btScalar dot(const btVector3 &v) const
Return the dot product. 
void convertContacts(btPersistentManifold **manifoldPtr, int numManifolds, const btContactSolverInfo &infoGlobal)
btCollisionObject can be used to manage collision detection objects. 
The btIDebugDraw interface class allows hooking up a debug renderer to visually debug simulations...
btMultiBody * m_multiBodyB
The btRigidBody is the main class for rigid body objects. 
btScalar getContactProcessingThreshold() const
btMultiBodyConstraintArray m_multiBodyFrictionContactConstraints
btAlignedObjectArray< btScalar > m_jacobians
void * m_originalContactPoint
const btMultibodyLink & getLink(int index) const
btVector3 can be used to represent 3D points and vectors. 
int size() const
return the number of elements in the array 
void convertContact(btPersistentManifold *manifold, const btContactSolverInfo &infoGlobal)
btVector3 getVelocityInLocalPoint(const btVector3 &rel_pos) const
btAlignedObjectArray< btVector3 > scratch_v
btSimdScalar m_appliedImpulse
btMultiBodySolverConstraint & addMultiBodyFrictionConstraint(const btVector3 &normalAxis, btPersistentManifold *manifold, int frictionIndex, btManifoldPoint &cp, btCollisionObject *colObj0, btCollisionObject *colObj1, btScalar relaxation, const btContactSolverInfo &infoGlobal, btScalar desiredVelocity=0, btScalar cfmSlip=0)
btScalar m_combinedContactDamping1
The btSolverBody is an internal datastructure for the constraint solver. Only necessary data is packe...
const btTransform & getWorldTransform() const
TypedConstraint is the baseclass for Bullet constraints and vehicles. 
void resize(int newsize, const T &fillData=T())
btRigidBody * m_originalBody
btVector3 & internalGetDeltaLinearVelocity()
some internal methods, don't use them 
const btCollisionObject * getBody1() const
void setEnabled(bool enabled)
void convertMultiBodyContact(btPersistentManifold *manifold, const btContactSolverInfo &infoGlobal)
void applyDeltaVeeMultiDof2(const btScalar *delta_vee, btScalar multiplier)
virtual btScalar solveGroupCacheFriendlySetup(btCollisionObject **bodies, int numBodies, btPersistentManifold **manifoldPtr, int numManifolds, btTypedConstraint **constraints, int numConstraints, const btContactSolverInfo &infoGlobal, btIDebugDraw *debugDrawer)
virtual btScalar solveGroupCacheFriendlySetup(btCollisionObject **bodies, int numBodies, btPersistentManifold **manifoldPtr, int numManifolds, btTypedConstraint **constraints, int numConstraints, const btContactSolverInfo &infoGlobal, btIDebugDraw *debugDrawer)
void setPosUpdated(bool updated)
void applyDeltaVee(btScalar *deltaV, btScalar impulse, int velocityIndex, int ndof)
btMultiBodyConstraintArray m_multiBodyNormalContactConstraints
btScalar m_contactMotion2
void setupMultiBodyTorsionalFrictionConstraint(btMultiBodySolverConstraint &solverConstraint, const btVector3 &contactNormal, btManifoldPoint &cp, btScalar combinedTorsionalFriction, const btContactSolverInfo &infoGlobal, btScalar &relaxation, bool isFriction, btScalar desiredVelocity=0, btScalar cfmSlip=0)
btScalar m_combinedFriction
btMultiBodyConstraint ** m_tmpMultiBodyConstraints
btVector3 m_relpos2CrossNormal
btTransform m_cachedWorldTransform
btScalar dot(const btQuaternion &q1, const btQuaternion &q2)
Calculate the dot product between two quaternions. 
void fillConstraintJacobianMultiDof(int link, const btVector3 &contact_point, const btVector3 &normal_ang, const btVector3 &normal_lin, btScalar *jac, btAlignedObjectArray< btScalar > &scratch_r, btAlignedObjectArray< btVector3 > &scratch_v, btAlignedObjectArray< btMatrix3x3 > &scratch_m) const
const btVector3 & getTotalForce() const
btVector3 & internalGetDeltaAngularVelocity()
const btMatrix3x3 & getInvInertiaTensorWorld() const
void internalSetAppliedImpulse(btScalar appliedImpulse)
internal method used by the constraint solver, don't use them directly 
void addBaseConstraintForce(const btVector3 &f)
void fillContactJacobianMultiDof(int link, const btVector3 &contact_point, const btVector3 &normal, btScalar *jac, btAlignedObjectArray< btScalar > &scratch_r, btAlignedObjectArray< btVector3 > &scratch_v, btAlignedObjectArray< btMatrix3x3 > &scratch_m) const
btVector3 m_lateralFrictionDir2
btMultiBody * m_multiBody
btSimdScalar m_appliedPushImpulse
The btDispatcher interface class can be used in combination with broadphase to dispatch calculations ...
T & expandNonInitializing()
btVector3 m_contactNormal1
void addBaseConstraintTorque(const btVector3 &t)
const btScalar * getVelocityVector() const
static void applyAnisotropicFriction(btCollisionObject *colObj, btVector3 &frictionDirection, int frictionMode)
btScalar getDistance() const
float btScalar
The btScalar type abstracts floating point numbers, to easily switch between double and single floati...
btScalar m_combinedSpinningFriction
btMultiBodyJacobianData m_data
btScalar btFabs(btScalar x)