Merge pull request #175 from TheBrenny/patch-1

getters and setters for fft bins and smoothing
- change the fftSize on the fly!

src/fft.js

@@ -91,17 +91,38 @@ define(function (require) {
    *  </code></div>
    */
   p5.FFT = function(smoothing, bins) {
-    this.smoothing = smoothing || 0.8;
-    this.bins = bins || 1024;
-    var FFT_SIZE = bins*2 || 2048;
     this.input = this.analyser = p5sound.audiocontext.createAnalyser();
+
+    Object.defineProperties(this, {
+      'bins': {
+        get: function() {
+          return this.analyser.fftSize / 2;
+        },
+        set: function(b) {
+          this.analyser.fftSize = (b * 2) || 1024;
+        },
+        configurable: true,
+        enumerable: true
+      },
+      'smoothing': {
+        get: function() {
+          return this.analyser.smoothing;
+        },
+        set: function(s) {
+          this.analyser.smoothingTimeConstant = s || 0.8;
+        },
+        configurable: true,
+        enumerable: true
+      }
+    });
+
+    //
+    this.smoothing = smoothing;
+    this.bins = bins;
 
     // default connections to p5sound fftMeter
     p5sound.fftMeter.connect(this.analyser);
 
-    this.analyser.smoothingTimeConstant = this.smoothing;
-    this.analyser.fftSize = FFT_SIZE;
-
     this.freqDomain = new Uint8Array(this.analyser.frequencyBinCount);
     this.timeDomain = new Uint8Array(this.analyser.frequencyBinCount);
 
@@ -621,4 +642,4 @@ define(function (require) {
   };
 
 
-});
+});