// Demonstrates sound input. Download and install Sonia
// from http://sonia.pitaru.com before running.

import pitaru.sonia_v2_9.*; 
import SoniaHelper.*;

float level,damperval;
SoniaHelper fft;

float x[],y[],xD[],rad[];
int num=256;

void setup(){
  size(512,400);

  // initialize arrays
  x=new float[num];
  y=new float[num];
  xD=new float[num];
  rad=new float[num];
  
  for(int i=0; i<num; i++) {
    x[i]=random(width);
    xD[i]=random(0.5,2);
    y[i]=random(height);
    rad[i]=5;
  }
  
  // Start Sonia engine.
  Sonia.start(this); 

  // Start LiveInput and return 256 FFT frequency bands.
  LiveInput.start(256); 
  LiveInput.useEqualizer(true);

  // Initialize SoniaHelper
  // SoniaHelper(int _n, int _nbands,boolean doAvg)
  int spectrumLength=256;
  int numbands=8;
  
  fft=new SoniaHelper(spectrumLength,numbands,false);
  fft.setMaxLimits(50,500);
  
  // dampen sound input. 0.1 == 10% change per frame.
  damperval=0.05;
  fft.setDamper(damperval);  

}

void draw() {
  fill(0,0,0, 3);
  rect(0,0, width,height);
  
  // get spectrum data from Sonia
  LiveInput.getSpectrum();
  fft.update(LiveInput.spectrum);

  // do our drawing
  noStroke();
  fill(255,0,0);

  for(int i=0; i<num; i++) {
    x[i]=x[i]+xD[i];
    if(x[i]>width) x[i]=0;
    
    float colmod=(float)i/255;
    fill(100+155*colmod,0,0);
    rad[i]=fft.spectrum[i]*50+5;
    ellipse(x[i],y[i], rad[i],rad[i]);
  }
}