mirror of
https://github.com/Tonejs/Tone.js
synced 2024-12-28 04:23:15 +00:00
ed71d8141b
no longer using AMD (require.js) style imports, and beginning to move to es6 "import/export" statements everywhere.
62 lines
1.3 KiB
JavaScript
62 lines
1.3 KiB
JavaScript
import Tone from "../core/Tone";
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import "../signal/Signal";
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import "../signal/Multiply";
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import "../signal/WaveShaper";
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/**
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* @class GreaterThanZero 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.SignalBase}
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* @example
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* var gt0 = new Tone.GreaterThanZero();
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* var sig = new Tone.Signal(0.01).connect(gt0);
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* //the output of gt0 is 1.
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* sig.value = 0;
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* //the output of gt0 is 0.
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*/
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Tone.GreaterThanZero = function(){
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Tone.SignalBase.call(this);
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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 = this.output = new Tone.WaveShaper(function(val){
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if (val <= 0){
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return 0;
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} else {
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return 1;
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}
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}, 127);
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/**
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* scale the first thresholded signal by a large value.
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* this will help with values which are very close to 0
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* @type {Tone.Multiply}
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* @private
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*/
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this._scale = this.input = new Tone.Multiply(10000);
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//connections
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this._scale.connect(this._thresh);
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};
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Tone.extend(Tone.GreaterThanZero, Tone.SignalBase);
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/**
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* dispose method
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* @returns {Tone.GreaterThanZero} this
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*/
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Tone.GreaterThanZero.prototype.dispose = function(){
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Tone.SignalBase.prototype.dispose.call(this);
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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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return this;
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};
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export default Tone.GreaterThanZero;
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