Class AnimationFunction

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.

Author

Lukas Scheuerle, HFU, 2019

Index

Constructors

Accessors

setKeyIn setKeyOut

Methods

calculate evaluate getParameters

Constructors

constructor

new AnimationFunction(_keyIn, _keyOut?): AnimationFunction
Parameters
- _keyIn: AnimationKey
- _keyOut: AnimationKey = null
Returns AnimationFunction
- Defined in Source/Core/Animation/AnimationFunction.ts:16

Accessors

setKeyIn

set setKeyIn(_keyIn): void
Parameters
- _keyIn: AnimationKey
Returns void
- Defined in Source/Core/Animation/AnimationFunction.ts:22

setKeyOut

set setKeyOut(_keyOut): void
Parameters
- _keyOut: AnimationKey
Returns void
- Defined in Source/Core/Animation/AnimationFunction.ts:27

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
- 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
- Defined in Source/Core/Animation/AnimationFunction.ts:45

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
- Defined in Source/Core/Animation/AnimationFunction.ts:36