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Added exponentialRampToValueAtTime feature #428

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Added exponentialRampToValueAtTime feature #428

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3f408bd
added exponentialRampToValueAtTime feature
endurance21 Mar 17, 2020
bcea5a2
added exponentialRampToValueAtTime feature
endurance21 Mar 17, 2020
ab4d795
Merge branch 'exponential' of github.com:endurance21/p5.js-sound into…
endurance21 Mar 17, 2020
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14 changes: 9 additions & 5 deletions src/gain.js
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Expand Up @@ -130,17 +130,21 @@ define(function (require) {
* @for p5.Gain
* @param {Number} volume amplitude between 0 and 1.0
* @param {Number} [rampTime] create a fade that lasts rampTime
* @param {Number} [timeFromNow] schedule this event to happen
* seconds from now
* @param {string} [isExp=false] to Allow Exponentialchange in value of amplitude
*/
p5.Gain.prototype.amp = function(vol, rampTime, tFromNow) {
p5.Gain.prototype.amp = function(vol, rampTime, tFromNow, isExp = false) {
var rampTime = rampTime || 0;
var tFromNow = tFromNow || 0;
var now = p5sound.audiocontext.currentTime;
var currentVol = this.output.gain.value;
this.output.gain.cancelScheduledValues(now);
this.output.gain.linearRampToValueAtTime(currentVol, now + tFromNow);
this.output.gain.linearRampToValueAtTime(vol, now + tFromNow + rampTime);
if(isExp){
this.output.gain.exponentialRampToValueAtTime(currentVol, now + tFromNow);
this.output.gain.exponentialRampToValueAtTime(vol, now + tFromNow + rampTime);
}else{
this.output.gain.linearRampToValueAtTime(currentVol, now + tFromNow);
this.output.gain.linearRampToValueAtTime(vol, now + tFromNow + rampTime);
}
};

p5.Gain.prototype.dispose = function() {
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