import processing.sound.*;

FFT fft;
AudioIn in;
Amplitude amp;
int bands = 4096;
float[] spectrum = new float[bands];
int f = 1;

static final int NUM_LINES = 10;
float t;

void setup() {
  background(20);
  size(500, 500);

  // Create an Input stream which is routed into the Amplitude analyzer
  fft = new FFT(this, bands);
  in = new AudioIn(this, 0);
  amp = new Amplitude(this);
  // start the Audio Input
  in.start();
  amp.input(in);
  // patch the AudioIn
  fft.input(in);
}

void draw() {
  fft.analyze(spectrum);
  background(20);
  stroke(255);
  strokeWeight(5);

  translate(width/2, height/2);

  int highestIndex = 0;
  for (int i = 0; i < bands / 4; i++) {
    if (spectrum[i] > spectrum[highestIndex]) {
      highestIndex = i;
    }
  }

  for (int i = 0; i < NUM_LINES; i++) {
    line(x1(t + i), y1(t + i), x2(t + i), y2(t + i));
  }

  println((int) (amp.analyze() * 100));

  f = (int) (amp.analyze() * 50);

  t += f;
}

float x1(float t) {
  return sin(t / 5) * 100 + sin(t / 5) * 20;
}

float y1(float t) {
  return cos(t / 10) * 100;
}

float x2(float t) {
  return sin(t / 10) * 200 + sin(t) * 2 + sin(t) * 2;
}

float y2(float t) {
  return cos(t / 20) * 200 + cos(t / 12) * 20;
}