Class AnimationFunctionNumber

Calculates the values between AnimationKeys. Represented internally by a cubic function (f(x) = ax³ + bx² + cx + d). Only needs to be recalculated when the keys change, so at runtime it should only be calculated once.

Authors

Lukas Scheuerle, HFU, 2019 | Jonas Plotzky, HFU, 2025

Hierarchy (view full)

AnimationFunction<number>
- AnimationFunctionNumber

Index

Constructors

constructor

Methods

calculate evaluate getParameters

Constructors

constructor

new AnimationFunctionNumber(_keyIn, _keyOut?): AnimationFunctionNumber
Parameters
- _keyIn: AnimationKey<number>
- _keyOut: AnimationKey<number> = null
Returns AnimationFunctionNumber
Inherited from AnimationFunction.constructor
- Defined in Source/Core/Animation/AnimationFunction.ts:20

Methods

calculate

calculate(): void
(Re-)Calculates the parameters of the cubic function. See https://math.stackexchange.com/questions/3173469/calculate-cubic-equation-from-two-points-and-two-slopes-variably and https://jirkadelloro.github.io/FUDGE/Documentation/Logs/190410_Notizen_LS

Returns void
Overrides AnimationFunction.calculate
- Defined in Source/Core/Animation/AnimationFunction.ts:57

evaluate

evaluate(_time): number
Calculates the value of the function at the given time.
Parameters
- _time: number
  the point in time at which to evaluate the function in milliseconds. Will be corrected for offset internally.
Returns number
the value at the given time
Overrides AnimationFunction.evaluate
- Defined in Source/Core/Animation/AnimationFunction.ts:50

getParameters

getParameters(): {
    a: number;
    b: number;
    c: number;
    d: number;
}
Returns the parameter values of this cubic function. f(x) = ax³ + bx² + cx + d Used by editor.

Returns {
    a: number;
    b: number;
    c: number;
    d: number;
}
- a: number
- b: number
- c: number
- d: number
Inherited from AnimationFunction.getParameters
- Defined in Source/Core/Animation/AnimationFunction.ts:30

Class AnimationFunctionNumber

Authors

Hierarchy (view full)

Index

Constructors

Methods

Constructors

constructor

Parameters

Returns AnimationFunctionNumber

Methods

calculate

Returns void

evaluate

Parameters

Returns number

getParameters

Returns {
    a: number;
    b: number;
    c: number;
    d: number;
}

a: number

b: number

c: number

d: number

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Class AnimationFunctionNumber

Authors

Hierarchy (view full)

Index

Constructors

Methods

Constructors

constructor

Parameters

Returns AnimationFunctionNumber

Methods

calculate

Returns void

evaluate

Parameters

Returns number

getParameters

Returns { a: number; b: number; c: number; d: number; }

a: number

b: number

c: number

d: number

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Returns {
a: number;
b: number;
c: number;
d: number;
}