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Panda3D Manual: Bullet Softbody Config

Bullet uses abbreviated properties which describe a soft bodies behaviour. Here are explanations for the most important settings, and their mapping to Bullet properties:


btSoftBody::Material vs. BulletSoftBodyMaterial:

btSoftBody::Material BulletSoftBodyMaterial Description
m_kLST get/setLinearStiffness Linear stiffness
Range [0,1]
m_kAST get/setAngularStiffness Angular stiffness
Range [0,1]
m_kVST get/setVolumePreservation Volume preservation
Range [0,1]



btSoftBody::Config vs. BulletSoftBodyConfig

btSoftBody::Config BulletSoftBodyConfig Description
kSRHR_CL get/setSoftVsRigidHardness Soft vs rigid hardness (cluster only)
Range [0,1]
kSKHR_CL get/setSoftVsKineticHardness Soft vs kinetic hardness (cluster only)
Range [0,1]
kSSHR_CL get/setSoftVsSoftHardness Soft vs soft hardness (cluster only)
Range [0,1]
kSR_SPLT_CL get/setSoftVsRigidImpulseSplit Soft vs rigid impulse split (cluster only)
Range [0,1]
kSK_SPLT_CL get/setSoftVsKineticImpulseSplit Soft vs kinetic impulse split (cluster only)
Range [0,1]
kSS_SPLT_CL get/setSoftVsSoftImpulseSplit Soft vs soft impulse split (cluster only)
Range [0,1]
kVCF get/setVelocitiesCorrectionFactor Velocities correction factor (Baumgarte)
kDP get/setDampingCoefficient Damping coefficient
Range [0,1]
kDG get/setDragCoefficient Drag coefficient
Range [0,+inf]
kLF get/setLiftCoefficient Lift coefficient
Range [0,+inf]
kPR get/setPressureCoefficient Pressure coefficient
Range [-inf,+inf]
kVC get/setVolumeConversationCoefficient Volume conversation coefficient
Range [0,+inf]
kDF get/setDynamicFrictionCoefficient Dynamic friction coefficient
Range [0,1]
kMT get/setPoseMatchingCoefficient Pose matching coefficient
Range [0,1]
kCHR get/setRigidContactsHardness Rigid contacts hardness
Range [0,1]
kKHR get/setKineticContactsHardness Kinetic contacts hardness
Range [0,1]
kSHR get/setSoftContactsHardness Soft contacts hardness
Range [0,1]
kAHR get/setAnchorsHardness Anchors hardness
Range [0,1]
piterations get/setPositionsSolverIterations Positions solver iterations
Positive integer
viterations get/setVelocitiesSolverIterations Velocities solver iterations
Positive integer
diterations get/setDriftSolverIterations Drift solver iterations
Positive integer
citerations get/setClusterSolverIterations Cluster solver iterations
Positive integer