mirror of
https://github.com/Tonejs/Tone.js
synced 2025-01-21 00:03:54 +00:00
67 lines
No EOL
1.3 KiB
JavaScript
67 lines
No EOL
1.3 KiB
JavaScript
define(["Tone/core/Tone", "Tone/signal/Signal", "Tone/signal/GreaterThanZero", "Tone/signal/WaveShaper"],
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function(Tone){
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"use strict";
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/**
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* @class EqualZero outputs 1 when the input is strictly greater than zero
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*
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* @constructor
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* @extends {Tone}
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*/
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Tone.EqualZero = function(){
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/**
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* scale the incoming signal by a large factor
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* @private
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* @type {Tone.Multiply}
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*/
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this._scale = this.input = new Tone.Multiply(10000);
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/**
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* @type {Tone.WaveShaper}
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* @private
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*/
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this._thresh = new Tone.WaveShaper(function(val){
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if (val === 0){
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return 1;
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} else {
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return 0;
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}
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}, 128);
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/**
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* threshold the output so that it's 0 or 1
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* @type {Tone.GreaterThanZero}
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* @private
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*/
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this._gtz = this.output = new Tone.GreaterThanZero();
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//connections
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this._scale.chain(this._thresh, this._gtz);
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};
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Tone.extend(Tone.EqualZero);
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/**
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* borrows the method from {@link Tone.Signal}
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*
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* @function
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*/
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Tone.EqualZero.prototype.connect = Tone.Signal.prototype.connect;
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/**
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* dispose method
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*/
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Tone.EqualZero.prototype.dispose = function(){
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Tone.prototype.dispose.call(this);
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this._gtz.dispose();
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this._gtz = null;
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this._scale.dispose();
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this._scale = null;
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this._thresh.dispose();
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this._thresh = null;
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};
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return Tone.EqualZero;
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}); |