define(["Tone/core/Tone", "Tone/component/DryWet", "Tone/signal/Merge", "Tone/signal/Split"],
function(Tone){
/**
* Panner.
*
* Equal Power Gain L/R Panner. Not 3D
*
* a panner uses a dry/wet knob internally
*
* 0 = 100% Left
* 1 = 100% Right
*
* @constructor
* @extends {Tone}
* @param {number=} initialPan the initail panner value (defaults to 0.5 = center)
*/
Tone.Panner = function(initialPan){
Tone.call(this);
/**
* the dry/wet knob
* @type {Tone.DryWet}
* @private
*/
this._dryWet = new Tone.DryWet();
/**
* @type {Tone.Merge}
* @private
*/
this._merger = new Tone.Merge();
/**
* @type {Tone.Split}
* @private
*/
this._splitter = new Tone.Split();
/**
* the pan control
* @type {Tone.Signal}
*/
this.panControl = this._dryWet.wetness;
//CONNECTIONS:
this.input.connect(this._splitter.left);
this.input.connect(this._splitter.right);
//left channel is dry, right channel is wet
this._splitter.left.connect(this._dryWet.dry);
this._splitter.right.connect(this._dryWet.wet);
//merge it back together
this._dryWet.dry.connect(this._merger.left);
this._dryWet.wet.connect(this._merger.right);
this._merger.connect(this.output);
//initial value
this.setPan(this.defaultArg(initialPan, 0.5));
};
Tone.extend(Tone.Panner);
/**
* set the l/r pan.
*
* 0 = 100% left.
* 1 = 100% right.
*
* @param {number} pan 0-1
* @param {Tone.Time=} rampTime (optionally) ramp to the pan position
*/
Tone.Panner.prototype.setPan = function(pan, rampTime){
this._dryWet.setWet(pan, rampTime);
};
/**
* clean up
*/
Tone.Panner.prototype.dispose = function(){
this._dryWet.dispose();
this._splitter.dispose();
this._merger.dispose();
this.input.disconnect();
this.output.disconnect();
this._dryWet = null;
this._splitter = null;
this._merger = null;
this.input = null;
this.output = null;
};
return Tone.Panner;
});