Documentation / scene / SpringParticle

Interface: SpringParticle

Defined in: libs/scene/src/animation/spring/spring_particle.ts:9

Represents a particle in the spring system

Properties

position

position: Vector3

Defined in: libs/scene/src/animation/spring/spring_particle.ts:11

Current position in world space

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prevPosition

prevPosition: Vector3

Defined in: libs/scene/src/animation/spring/spring_particle.ts:13

Previous position for Verlet integration

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originalPosition

originalPosition: Vector3

Defined in: libs/scene/src/animation/spring/spring_particle.ts:15

Original position for reset

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animPosition

animPosition: Vector3

Defined in: libs/scene/src/animation/spring/spring_particle.ts:17

Animated (target) position for pose preservation

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originalRotation

originalRotation: Quaternion

Defined in: libs/scene/src/animation/spring/spring_particle.ts:19

Original world rotation (for calculating rotation delta)

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mass

mass: number

Defined in: libs/scene/src/animation/spring/spring_particle.ts:21

Mass of the particle (affects inertia)

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damping

damping: number

Defined in: libs/scene/src/animation/spring/spring_particle.ts:23

Damping coefficient [0-1] (0 = no damping, 1 = full damping)

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fixed

fixed: boolean

Defined in: libs/scene/src/animation/spring/spring_particle.ts:25

Whether this particle is fixed (anchor point)

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node

node: SceneNode

Defined in: libs/scene/src/animation/spring/spring_particle.ts:27

Associated scene node (optional)

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anchorNode?

optional anchorNode?: SceneNode

Defined in: libs/scene/src/animation/spring/spring_particle.ts:29

Optional alternate anchor node used as the fixed-position source

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anchorOffset?

optional anchorOffset?: Vector3

Defined in: libs/scene/src/animation/spring/spring_particle.ts:31

Optional local-space offset evaluated from anchorNode

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lastFramePosition

lastFramePosition: Vector3

Defined in: libs/scene/src/animation/spring/spring_particle.ts:33

Previous frame position (used to calculate velocity for inertial forces)

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positionHistory?

optional positionHistory?: Vector3[]

Defined in: libs/scene/src/animation/spring/spring_particle.ts:35

Position history for rotation center estimation (for fixed particles)