mirror of
https://github.com/Tonejs/Tone.js
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126 lines
2.7 KiB
JavaScript
126 lines
2.7 KiB
JavaScript
import Tone from "../core/Tone";
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import "../event/Loop";
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import "../control/CtrlPattern";
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/**
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* @class Tone.Pattern arpeggiates between the given notes
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* in a number of patterns. See Tone.CtrlPattern for
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* a full list of patterns.
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* @example
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* var pattern = new Tone.Pattern(function(time, note){
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* //the order of the notes passed in depends on the pattern
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* }, ["C2", "D4", "E5", "A6"], "upDown");
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* @extends {Tone.Loop}
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* @param {Function} callback The callback to invoke with the event.
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* @param {Array} values The values to arpeggiate over.
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*/
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Tone.Pattern = function(){
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var options = Tone.defaults(arguments, ["callback", "values", "pattern"], Tone.Pattern);
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Tone.Loop.call(this, options);
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/**
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* The pattern manager
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* @type {Tone.CtrlPattern}
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* @private
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*/
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this._pattern = new Tone.CtrlPattern({
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"values" : options.values,
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"type" : options.pattern,
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"index" : options.index
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});
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};
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Tone.extend(Tone.Pattern, Tone.Loop);
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/**
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* The defaults
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* @const
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* @type {Object}
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*/
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Tone.Pattern.defaults = {
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"pattern" : Tone.CtrlPattern.Type.Up,
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"callback" : Tone.noOp,
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"values" : [],
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};
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/**
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* Internal function called when the notes should be called
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* @param {Number} time The time the event occurs
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* @private
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*/
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Tone.Pattern.prototype._tick = function(time){
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this.callback(time, this._pattern.value);
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this._pattern.next();
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};
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/**
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* The current index in the values array.
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* @memberOf Tone.Pattern#
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* @type {Positive}
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* @name index
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*/
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Object.defineProperty(Tone.Pattern.prototype, "index", {
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get : function(){
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return this._pattern.index;
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},
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set : function(i){
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this._pattern.index = i;
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}
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});
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/**
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* The array of events.
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* @memberOf Tone.Pattern#
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* @type {Array}
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* @name values
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*/
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Object.defineProperty(Tone.Pattern.prototype, "values", {
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get : function(){
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return this._pattern.values;
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},
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set : function(vals){
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this._pattern.values = vals;
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}
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});
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/**
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* The current value of the pattern.
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* @memberOf Tone.Pattern#
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* @type {*}
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* @name value
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* @readOnly
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*/
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Object.defineProperty(Tone.Pattern.prototype, "value", {
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get : function(){
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return this._pattern.value;
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}
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});
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/**
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* The pattern type. See Tone.CtrlPattern for the full list of patterns.
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* @memberOf Tone.Pattern#
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* @type {String}
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* @name pattern
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*/
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Object.defineProperty(Tone.Pattern.prototype, "pattern", {
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get : function(){
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return this._pattern.type;
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},
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set : function(pattern){
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this._pattern.type = pattern;
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}
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});
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/**
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* Clean up
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* @return {Tone.Pattern} this
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*/
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Tone.Pattern.prototype.dispose = function(){
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Tone.Loop.prototype.dispose.call(this);
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this._pattern.dispose();
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this._pattern = null;
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};
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export default Tone.Pattern;
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