import krister.Ess.*;
FFT fft;
AudioInput in;
int bufferSize;
BeatZone bz;
float [] zoneFill;

void setup(){
  size(532, 230);
  Ess.start(this); 
  bufferSize = 1024;
  in = new AudioInput(bufferSize);
  fft = new FFT(bufferSize);
  fft.equalizer(true);
  in.start();
  // set up our FFT normalization/dampening
  float minLimit=.005;
  float maxLimit=.05;
  float myDamp=.1f;
  int numAverages=32;
  fft.limits(minLimit,maxLimit);
  fft.damp(myDamp);
  fft.averages(numAverages);
  // set BeatZone
  bz = new BeatZone(fft, in, 3);
  bz.setZone(0, 0, 100);
  bz.setZone(1, 100, 400);
  bz.setZone(2, 400, 511);
  zoneFill = new float[]{
    255.0, 255.0, 255.0    };
  noStroke();
}
// Maximum fft 1.0
// Minimum fft 0.0
// After init to Ess FFT demo that is
void draw(){
  background(242, 240, 174);
  noStroke();
  fill(131,104,81);
  for(int i=0; i<bufferSize/2; i++) {
    rect(10+i,10,1,fft.spectrum[i]*200);
  }
  stroke(0);
  for(int i = 0; i < bz.zone.length; i++){
    zoneFill[i] = bz.beat[i] ? 255.0 : zoneFill[i] > 0.0 ? zoneFill[i] - 5 : 0.0;
    fill(color(250, 186, 10, zoneFill[i]));
    rect(10+bz.zoneStart[i], 10, bz.zoneEnd[i] - bz.zoneStart[i], 200);
    line(10+bz.zoneStart[i], bz.threshold[i]*200, 10 + bz.zoneEnd[i], bz.threshold[i]*200);
  }
}
public void audioInputData(AudioInput theInput) {
  fft.getSpectrum(in);
  bz.read();
}
public void stop() {
  Ess.stop();
  super.stop();
}