Sound Visualizer

sketch_150729b.pde

import ddf.minim.spi.*;
import ddf.minim.signals.*;
import ddf.minim.*;
import ddf.minim.analysis.*;
import ddf.minim.ugens.*;
import ddf.minim.effects.*;

private Minim mMinim;
private AudioPlayer mPlayer;
private static final int BASE_RADIUS = 256;
 
void setup() {
  size(400, 400);
  frameRate(60);

  this.mMinim = new Minim(this);
  mPlayer = mMinim.loadFile("sample.mp3", 512);
  mPlayer.play();
}

void draw() {
  // background color
  background(0);
  
  // Draw points in music player
  float x, y;
  float radius = BASE_RADIUS + random(256) - 128; 
  for (int i = 0; i < mPlayer.left.size() - 1; i++) {
    x = getWidth() / 2 + cos(i) * radius * mPlayer.left.get(i);
    y = getHeight() / 2 + sin(i) * radius * mPlayer.right.get(i);
    // stroke color
    stroke(random(256), random(256), random(256));
    // stroke weight
    strokeWeight(random(10) + 1);
    // Draw a point    
    point(x, y);
  }
}

void stop() {
  mPlayer.close();
  mMinim.stop();
  super.stop();
}