Audio oscilloscope in X/Y point mode

/* 

 * Oscilloscope

 * Lissajous + Bowditch Visualization

 * https://en.wikipedia.org/wiki/Lissajous_curve

 */

import ddf.minim.*;

import ddf.minim.analysis.*;

import ddf.minim.signals.*;

​

Minim minim;

AudioPlayer player;

​

float gain = 100;

int tbase = 2048;

int xCenter;

int yCenter;

float[] playerBuffer;

​

void setup()

{

  size(1280, 720, P3D);

  frameRate(60);

  xCenter = width/2;

  yCenter = height/2;

  minim = new Minim(this);

  player = minim.loadFile("Unsustainable.mp3", 2048);

  playerBuffer = new float[player.bufferSize()];

  player.play();

}

void draw()

{

  background(0);

  stroke(183,233,255);

  strokeWeight(2);

  beginShape();

  for(int i = 0; i < player.bufferSize() - 1; i++)

  {

    //line(x1, y1, x2, y2)

    //line(xCenter+player.right.get(i+1)*640, yCenter-player.left.get(i+1)*360, xCenter, yCenter);

    point(xCenter+player.right.get(i+1)*640, yCenter-player.left.get(i+1)*360);

  }

  endShape();

}

​

void stop()

{

  player.close();

  minim.stop();

  super.stop();

}