Documentation / scene / SimulationParams
Interface: SimulationParams
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:52
Parameters for a single simulation step.
Properties
isPaused
isPaused:
boolean
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:54
If true, skip force integration (only apply root motion and output positions)
stepTime
stepTime:
number
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:56
Frame delta time in seconds (will be subdivided by subSteps)
subSteps
subSteps:
number
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:58
Number of substeps per frame. Higher = more stable simulation
rootPosition
rootPosition:
Vector3
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:60
Current root bone world position
previousRootPosition
previousRootPosition:
Vector3
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:62
Previous frame's root bone world position (for root motion limiting)
rootSlideLimit
rootSlideLimit:
number
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:64
Max world-space root slide distance retained after root motion. -1 = no limit
rootRotation
rootRotation:
Quaternion
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:66
Current root bone world rotation
previousRootRotation
previousRootRotation:
Quaternion
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:68
Previous frame's root bone world rotation
rootRotateLimit
rootRotateLimit:
number
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:70
Max root rotation angle (degrees) per substep. -1 = no limit
windForce
windForce:
Vector3
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:72
Global wind force vector
enableSurfaceCollision
enableSurfaceCollision:
boolean
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:74
Enable triangle-based surface collision
surfaceConstraints
surfaceConstraints:
number[]
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:76
Triangle indices for surface collision (6 per quad: 2 triangles, 3 indices each)
relaxation
relaxation:
number
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:78
Number of constraint relaxation iterations per substep
constraintShrinkLimit
constraintShrinkLimit:
number
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:80
Upper limit for horizontal/shear shrink power
blendRatio
blendRatio:
number
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:82
Blend ratio between physics and animation [0-1]. 0 = full physics
isFakeWave
isFakeWave:
boolean
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:84
Enable sinusoidal fake wave on leaf bones
fakeWaveSpeed
fakeWaveSpeed:
number
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:86
Fake wave speed (frequency accumulation rate)
fakeWavePower
fakeWavePower:
number
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:88
Fake wave global amplitude
fakeWaveCounter
fakeWaveCounter:
number
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:90
Current fake wave phase counter (accumulated across frames)
collisionScale
collisionScale:
number
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:92
Global scale multiplier for all collider radii
enableBroadPhase
enableBroadPhase:
boolean
Defined in: libs/scene/src/animation/joint_dynamics/solver.ts:94
Enable broad-phase pruning before precise collision checks