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feat: new LFO waveforms

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This commit is contained in:
cha0s 2021-02-06 03:04:11 -06:00
parent 74cbad6e7d
commit d27d324f2c
1 changed files with 15 additions and 7 deletions
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22
packages/timing/src/lfo/modulated-property.js
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@ -9,18 +9,26 @@ const Modulator = {
return () => 0.5;
},
Linear() {
return (location) => location;
},
Random({variance = 0.4} = {}) {
return () => Math.abs((Math.random() * (variance + variance) - variance)) % 1;
},
Sawtooth() {
return (location) => location;
},
Sine() {
return (location) => 0.5 * (1 + Math.sin(location * Math.PI * 2));
},
Square() {
return (location) => (location < 0.5 ? 0 : 1);
},
Triangle() {
return (location) => 2 * Math.abs(((location + 0.75) % 1) - 0.5);
},
};
const decorate = compose(
@ -55,7 +63,7 @@ export default class ModulatedProperty extends decorate(Class) {
this.key = key;
if (!modulators) {
// eslint-disable-next-line no-param-reassign
modulators = [Modulator.Linear];
modulators = [Modulator.Triangle];
}
if (!Array.isArray(modulators)) {
// eslint-disable-next-line no-param-reassign
@ -70,12 +78,12 @@ export default class ModulatedProperty extends decorate(Class) {
this.min = this.median - (magnitude / 2);
const modulatorFunction = (modulator) => {
if ('string' === typeof modulator) {
return Modulator[modulator] ? Modulator[modulator] : Modulator.Linear;
return Modulator[modulator] ? Modulator[modulator] : Modulator.Triangle;
}
if ('function' === typeof modulator) {
return modulator;
}
return Modulator.Linear;
return Modulator.Triangle;
};
this.modulators = modulators.map((modulator) => {
if ('object' !== typeof modulator) {