// Processing motion blur
// 'time' runs from 0 to 1
// ignore everything above the /////////
// by Dave @ beesandbombs

int[][] result;
float time;

void setup() {
  setup_();
  result = new int[width*height][3];
}

void draw() {
  for (int i=0; i<width*height; i++)
    for (int a=0; a<3; a++)
      result[i][a] = 0;

  for (int sa=0; sa<samplesPerFrame; sa++) {
    time = map(frameCount-1 + sa*shutterAngle/samplesPerFrame, 0, numFrames, 0, 1);
    draw_();
    loadPixels();
    for (int i=0; i<pixels.length; i++) {
      result[i][0] += pixels[i] >> 16 & 0xff;
      result[i][1] += pixels[i] >> 8 & 0xff;
      result[i][2] += pixels[i] & 0xff;
    }
  }

  loadPixels();
  for (int i=0; i<pixels.length; i++)
    pixels[i] = 0xff << 24 | (result[i][0]/samplesPerFrame) << 16 | 
      (result[i][1]/samplesPerFrame) << 8 | (result[i][2]/samplesPerFrame);
  updatePixels();

  saveFrame("f###.gif");
  if (frameCount==numFrames)
    exit();
}

//////////////////////////////////////////////////////////////////////////////

int samplesPerFrame = 32;
int numFrames = 48;        
float shutterAngle = .6;

void setup_() {
  // your usual setup() goes here!
}


void draw_() {
  // your usual draw() goes here!
}