Class Scale

Behaviour that scales particles.

Hierarchy (View Summary)

Behaviour
- Scale

Index

Constructors

Properties

_life _same age dead easing energy id isEnabled scaleA scaleB type

Accessors

Methods

applyBehaviour destroy energize fromJSON initialize mutate normalizeForce normalizeValue reset fromJSON

Constructors

constructor

new Scale(
    scaleA?: number,
    scaleB?: number,
    life?: number,
    easing?: EasingFunction,
    isEnabled?: boolean,
): Scale
Constructs a Scale behaviour instance.
Parameters
- OptionalscaleA: number
  the starting scale value
- OptionalscaleB: number
  the ending scale value
- Optionallife: number
  the life of the behaviour
- Optionaleasing: EasingFunction
  the easing equation to use for transforms
- isEnabled: boolean = true
  Determines if the behaviour will be applied or not
Returns Scale
Overrides Behaviour.constructor
- Defined in src/behaviour/Scale.ts:35

Properties

_life

_life: number

_same

_same: boolean

age

age: number

dead

dead: boolean

easing

easing: EasingFunction

energy

energy: number

id

id: string

isEnabled

isEnabled: boolean

scaleA

scaleA: Span<number>

scaleB

scaleB: Span<number>

type

type: string

Accessors

life

get life(): number
Gets the behaviour's life.

Returns number
Inherited from Behaviour.life
- Defined in src/behaviour/Behaviour.ts:65
set life(life: number): void
Ensures that life is infinity if an invalid value is supplied.
Parameters
- life: number
Returns void
Inherited from Behaviour.life
- Defined in src/behaviour/Behaviour.ts:58

same

get same(): boolean
Gets the _same property which determines if the scale props are the same.

Returns boolean
- Defined in src/behaviour/Scale.ts:50
set same(same: boolean): void
Sets the _same property which determines if the scale props are the same.
Parameters
- same: boolean
Returns void
- Defined in src/behaviour/Scale.ts:57

Methods

applyBehaviour

applyBehaviour(target: Particle | Emitter, time: number, index?: number): void
Apply behaviour to the target as a factor of time.
Parameters
- target: Particle | Emitter
- time: number
- Optionalindex: number
Returns void
Inherited from Behaviour.applyBehaviour
- Defined in src/behaviour/Behaviour.ts:93

`Abstract`destroy

destroy(): void
Destroy this behaviour.

Returns void
Inherited from Behaviour.destroy
- Defined in src/behaviour/Behaviour.ts:140

energize

energize(particle: Particle, time: number, index?: number): void
Compares the age of the behaviour vs integration time and determines if the behaviour should be set to dead or not.
Parameters
- particle: Particle
- time: number
- Optionalindex: number
Returns void
Inherited from Behaviour.energize
- Defined in src/behaviour/Behaviour.ts:116

`Abstract`fromJSON

fromJSON(json: Record<string, unknown>): void
Returns a new instance of the behaviour from the JSON object passed.
Parameters
- json: Record<string, unknown>
Returns void
Inherited from Behaviour.fromJSON
- Defined in src/behaviour/Behaviour.ts:147

initialize

initialize(particle: Particle): void
Initializes the behaviour on a particle. Stores initial values for comparison and mutation in the applyBehaviour method.
Parameters
- particle: Particle
  the particle to initialize the behaviour on
Returns void
Overrides Behaviour.initialize
- Defined in src/behaviour/Scale.ts:96

mutate

mutate(particle: Particle, time: number, index?: number): void
Applies the behaviour to the particle. Mutates the particle's scale and its radius according to this scale.
Parameters
- particle: Particle
  the particle to apply the behaviour to
- time: number
  engine time
- Optionalindex: number
  the particle index
Returns void
Overrides Behaviour.mutate
- Defined in src/behaviour/Scale.ts:113

normalizeForce

normalizeForce(force: Vector3D): Vector3D
Normalize a force by 1:100.
Parameters
- force: Vector3D
Returns Vector3D
Inherited from Behaviour.normalizeForce
- Defined in src/behaviour/Behaviour.ts:72

normalizeValue

normalizeValue(value: number): number
Normalize a value by 1:100.
Parameters
- value: number
Returns number
Inherited from Behaviour.normalizeValue
- Defined in src/behaviour/Behaviour.ts:79

reset

reset(
    scaleA?: number,
    scaleB?: number,
    life?: number,
    easing?: EasingFunction,
): void
Resets the behaviour properties.
Parameters
- OptionalscaleA: number
  the starting scale value
- OptionalscaleB: number
  the ending scale value
- Optionallife: number
  the life of the behaviour
- Optionaleasing: EasingFunction
  the easing equation to use for transforms
Returns void
Overrides Behaviour.reset
- Defined in src/behaviour/Scale.ts:69

`Static`fromJSON

fromJSON(json: ScaleJSON): Scale
Returns a new instance of the behaviour from the JSON object passed.
Parameters
- json: ScaleJSON
  JSON object containing the required constructor properties
Returns Scale
- Defined in src/behaviour/Scale.ts:134