67 lines
1.2 KiB
JavaScript
67 lines
1.2 KiB
JavaScript
import ModulatedProperty from './modulated-property';
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export default class LfoResult {
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constructor(object, properties, duration = 0) {
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this.duration = duration;
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this.elapsed = 0;
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this.isRunning = false;
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this.object = {};
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this.properties = {};
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this.start();
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this.deferred = {};
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this.promise = this.deferred.promise = new Promise((resolve, reject) => {
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this.deferred.resolve = resolve;
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this.deferred.reject = reject;
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});
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for (const key in properties) {
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this.properties[key] = new ModulatedProperty(object, key, {
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frequency: this.duration,
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...properties[key]
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});
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}
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}
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property(key) {
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return this.properties[key];
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}
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start() {
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this.elapsed = 0;
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this.isRunning = true;
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}
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stop() {
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this.isRunning = false;
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}
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tick(elapsed) {
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if (!this.isRunning) {
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return;
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}
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let finished = false;
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if (this.duration > 0 && this.duration <= (this.elapsed += elapsed)) {
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finished = true;
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elapsed = this.elapsed - this.duration;
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this.elapsed = this.duration;
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}
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for (const key in properties) {
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properties[key].tick(elapsed);
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}
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if (finished) {
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this.deferred.resolve();
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this.stop();
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}
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}
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}
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