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expose pybullet changeDynamics(spinningFriction=..., rollingFriction=..., restitution=...)

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Bullet C-API b3ChangeDynamicsInfoSetSpinningFriction/RollingFriction/Resitution
b3PhysicsParamSetRestitutionVelocityThreshold, / pybullet.setPhysicsEngineParameter restitutionVelocityThreshold:
if the velocity is below this threshhold, the restitution is zero (this prevents energy buildup at near-resting state)
pybullet restitution.py example.
This commit is contained in:
Erwin Coumans
2017-05-26 18:14:38 -07:00
parent 8c6d4a4c85
commit b645963879
12 changed files with 317 additions and 51 deletions
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48
examples/SharedMemory/PhysicsClientC_API.cpp
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@@ -392,6 +392,18 @@ int b3PhysicsParamSetEnableFileCaching(b3SharedMemoryCommandHandle commandHandle
}
int b3PhysicsParamSetRestitutionVelocityThreshold(b3SharedMemoryCommandHandle commandHandle, double restitutionVelocityThreshold)
{
struct SharedMemoryCommand* command = (struct SharedMemoryCommand*) commandHandle;
b3Assert(command->m_type == CMD_SEND_PHYSICS_SIMULATION_PARAMETERS);
command->m_physSimParamArgs.m_restitutionVelocityThreshold = restitutionVelocityThreshold;
command->m_updateFlags |= SIM_PARAM_UPDATE_RESTITUTION_VELOCITY_THRESHOLD ;
return 0;
}
int b3PhysicsParamSetNumSolverIterations(b3SharedMemoryCommandHandle commandHandle, int numSolverIterations)
{
struct SharedMemoryCommand* command = (struct SharedMemoryCommand*) commandHandle;
@@ -1297,6 +1309,42 @@ int b3ChangeDynamicsInfoSetLateralFriction(b3SharedMemoryCommandHandle commandHa
return 0;
}
int b3ChangeDynamicsInfoSetSpinningFriction(b3SharedMemoryCommandHandle commandHandle, int bodyUniqueId, int linkIndex, double friction)
{
struct SharedMemoryCommand* command = (struct SharedMemoryCommand*) commandHandle;
b3Assert(command->m_type == CMD_CHANGE_DYNAMICS_INFO);
command->m_changeDynamicsInfoArgs.m_bodyUniqueId = bodyUniqueId;
command->m_changeDynamicsInfoArgs.m_linkIndex = linkIndex;
command->m_changeDynamicsInfoArgs.m_spinningFriction = friction;
command->m_updateFlags |= CHANGE_DYNAMICS_INFO_SET_SPINNING_FRICTION;
return 0;
}
int b3ChangeDynamicsInfoSetRollingFriction(b3SharedMemoryCommandHandle commandHandle, int bodyUniqueId, int linkIndex, double friction)
{
struct SharedMemoryCommand* command = (struct SharedMemoryCommand*) commandHandle;
b3Assert(command->m_type == CMD_CHANGE_DYNAMICS_INFO);
command->m_changeDynamicsInfoArgs.m_bodyUniqueId = bodyUniqueId;
command->m_changeDynamicsInfoArgs.m_linkIndex = linkIndex;
command->m_changeDynamicsInfoArgs.m_rollingFriction = friction;
command->m_updateFlags |= CHANGE_DYNAMICS_INFO_SET_ROLLING_FRICTION;
return 0;
}
int b3ChangeDynamicsInfoSetRestitution(b3SharedMemoryCommandHandle commandHandle, int bodyUniqueId, int linkIndex, double restitution)
{
struct SharedMemoryCommand* command = (struct SharedMemoryCommand*) commandHandle;
b3Assert(command->m_type == CMD_CHANGE_DYNAMICS_INFO);
command->m_changeDynamicsInfoArgs.m_bodyUniqueId = bodyUniqueId;
command->m_changeDynamicsInfoArgs.m_linkIndex = linkIndex;
command->m_changeDynamicsInfoArgs.m_restitution = restitution;
command->m_updateFlags |= CHANGE_DYNAMICS_INFO_SET_RESTITUTION;
return 0;
}
b3SharedMemoryCommandHandle b3InitCreateUserConstraintCommand(b3PhysicsClientHandle physClient, int parentBodyIndex, int parentJointIndex, int childBodyIndex, int childJointIndex, struct b3JointInfo* info)
{
PhysicsClient* cl = (PhysicsClient* ) physClient;