R2SoftBodyMaterial Struct Reference

Plain configuration data; initialize defaults, edit, then apply. More...

#include <rapier.h>

Data Fields
struct R2SpringCoefficients	edgeSoftness
	Spring coefficients for structural edge constraints.
struct R2SpringCoefficients	bendSoftness
	Spring coefficients for bending edges and dihedrals.
struct R2SpringCoefficients	volumeSoftness
	Spring coefficients for cell and global volume constraints.
struct R2SpringCoefficients	shapeMatchingSoftness
	Spring coefficients for shape-matching constraints.
R2Real	youngModulus
	Elastic modulus: force per area in 3D, force per length in 2D; nonnegative.
R2Real	poissonRatio
	Poisson ratio for elastic cells, in [0, 0.5).
R2Real	elasticDampingRatio
	Nonnegative damping ratio of elastic cells.
R2Real	plasticYield
	Cell strain threshold for plastic flow; zero disables plasticity.
R2Real	plasticCreep
	Nonnegative rate per second at which excess cell strain becomes permanent.
R2Real	plasticMax
	Maximum accumulated cell plastic stretch, measured by the norm of P - I.
R2Real	deformationDamping
	Rate per second pulling particle velocities toward best-fit rigid motion; zero disables it.
R2Real	edgePlasticYield
	Edge strain threshold for plastic flow; zero disables plasticity.
R2Real	edgePlasticCreep
	Nonnegative rate per second at which excess edge strain becomes permanent.
R2Real	edgePlasticMax
	Maximum permanent edge-length change as a fraction of its initial length.
uint32_t	edgePlasticFlow
	Plastic flow direction: R2_SOFT_EDGE_PLASTIC_FLOW_BOTH, _COMPRESSION or _TENSION.
struct R2OptionalReal	tearStrain
	Optional strain threshold for tearing; disabled means no strain-based tearing.
struct R2OptionalReal	tearForce
	Optional tensile edge-force threshold for tearing.
R2Real	tearSmoothing
	Exponential load-smoothing time constant in seconds; zero disables smoothing.
R2Real	interiorStrength
	Tear-threshold multiplier for undamaged interior elements.
uint32_t	maxTearsPerStep
	Maximum ordinary edge tears per step; edges above twice their threshold bypass the limit.
struct R2OptionalU32	minPiece
	Optional minimum particle count of tear pieces.

Detailed Description

Plain configuration data; initialize defaults, edit, then apply.

No destructor.

Field Documentation

bendSoftness

struct R2SpringCoefficients R2SoftBodyMaterial::bendSoftness

Spring coefficients for bending edges and dihedrals.

deformationDamping

R2Real R2SoftBodyMaterial::deformationDamping

Rate per second pulling particle velocities toward best-fit rigid motion; zero disables it.

edgePlasticCreep

R2Real R2SoftBodyMaterial::edgePlasticCreep

Nonnegative rate per second at which excess edge strain becomes permanent.

edgePlasticFlow

uint32_t R2SoftBodyMaterial::edgePlasticFlow

Plastic flow direction: R2_SOFT_EDGE_PLASTIC_FLOW_BOTH, _COMPRESSION or _TENSION.

edgePlasticMax

R2Real R2SoftBodyMaterial::edgePlasticMax

Maximum permanent edge-length change as a fraction of its initial length.

edgePlasticYield

R2Real R2SoftBodyMaterial::edgePlasticYield

Edge strain threshold for plastic flow; zero disables plasticity.

edgeSoftness

struct R2SpringCoefficients R2SoftBodyMaterial::edgeSoftness

Spring coefficients for structural edge constraints.

elasticDampingRatio

R2Real R2SoftBodyMaterial::elasticDampingRatio

Nonnegative damping ratio of elastic cells.

interiorStrength

R2Real R2SoftBodyMaterial::interiorStrength

Tear-threshold multiplier for undamaged interior elements.

maxTearsPerStep

uint32_t R2SoftBodyMaterial::maxTearsPerStep

Maximum ordinary edge tears per step; edges above twice their threshold bypass the limit.

minPiece

struct R2OptionalU32 R2SoftBodyMaterial::minPiece

Optional minimum particle count of tear pieces.

plasticCreep

R2Real R2SoftBodyMaterial::plasticCreep

Nonnegative rate per second at which excess cell strain becomes permanent.

plasticMax

R2Real R2SoftBodyMaterial::plasticMax

Maximum accumulated cell plastic stretch, measured by the norm of P - I.

plasticYield

R2Real R2SoftBodyMaterial::plasticYield

Cell strain threshold for plastic flow; zero disables plasticity.

poissonRatio

R2Real R2SoftBodyMaterial::poissonRatio

Poisson ratio for elastic cells, in [0, 0.5).

shapeMatchingSoftness

struct R2SpringCoefficients R2SoftBodyMaterial::shapeMatchingSoftness

Spring coefficients for shape-matching constraints.

tearForce

struct R2OptionalReal R2SoftBodyMaterial::tearForce

Optional tensile edge-force threshold for tearing.

tearSmoothing

R2Real R2SoftBodyMaterial::tearSmoothing

Exponential load-smoothing time constant in seconds; zero disables smoothing.

tearStrain

struct R2OptionalReal R2SoftBodyMaterial::tearStrain

Optional strain threshold for tearing; disabled means no strain-based tearing.

volumeSoftness

struct R2SpringCoefficients R2SoftBodyMaterial::volumeSoftness

Spring coefficients for cell and global volume constraints.

youngModulus

R2Real R2SoftBodyMaterial::youngModulus

Elastic modulus: force per area in 3D, force per length in 2D; nonnegative.

---

The documentation for this struct was generated from the following file:

• rapier.h