mirror of
https://github.com/Tonejs/Tone.js
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60 lines
No EOL
1.2 KiB
JavaScript
60 lines
No EOL
1.2 KiB
JavaScript
define(["Tone/core/Tone", "Tone/signal/Select", "Tone/signal/Negate", "Tone/signal/LessThan", "Tone/signal/Signal"],
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function(Tone){
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"use strict";
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/**
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* @class return the absolute value of an incoming signal
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*
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* @constructor
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* @extends {Tone.SignalBase}
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*/
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Tone.Abs = function(){
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Tone.call(this, 1, 0);
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/**
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* @type {Tone.LessThan}
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* @private
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*/
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this._ltz = new Tone.LessThan(0);
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/**
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* @type {Tone.Select}
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* @private
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*/
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this._switch = this.output = new Tone.Select(2);
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/**
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* @type {Tone.Negate}
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* @private
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*/
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this._negate = new Tone.Negate();
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//two signal paths, positive and negative
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this.input.connect(this._switch, 0, 0);
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this.input.connect(this._negate);
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this._negate.connect(this._switch, 0, 1);
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//the control signal
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this.input.chain(this._ltz, this._switch.gate);
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};
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Tone.extend(Tone.Abs, Tone.SignalBase);
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/**
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* dispose method
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* @returns {Tone.Abs} `this`
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*/
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Tone.Abs.prototype.dispose = function(){
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Tone.prototype.dispose.call(this);
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this._switch.dispose();
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this._switch = null;
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this._ltz.dispose();
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this._ltz = null;
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this._negate.dispose();
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this._negate = null;
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return this;
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};
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return Tone.Abs;
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}); |