46 lines
1.4 KiB
JavaScript
46 lines
1.4 KiB
JavaScript
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// A chain of effects that connect to the effect bus
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export default class EffectChain {
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constructor(context, graph, input, output) {
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this.effects = [];
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this.context = context;
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this.graph = graph;
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this.inputNode = input;
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this.outputNode = output;
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this.updateConnections();
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}
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applyEffect(effect) {
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this.effects.push(effect);
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this.updateConnections();
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}
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removeEffect(effect) {
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this.effects.forEach((currEffect) => {
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if (effect === currEffect) {
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currEffect.disconnect();
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}
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});
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this.effects = this.effects.filter((currEffect) => effect !== currEffect);
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this.updateConnections();
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}
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updateConnections() {
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if (this.effects.length == 0) {
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this.inputNode.connect(this.outputNode);
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return;
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}
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let current = null;
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let previous = null;
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this.effects.forEach((effect) => {
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current = effect;
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if (previous) {
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current.connectInput(previous.getOutput());
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}
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else {
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current.connectInput(this.inputNode);
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}
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previous = current;
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});
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if (current) {
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current.connectOutput(this.outputNode);
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}
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}
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}
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