ArrayList mCenters;
int black = color(0);
PImage source;

void setup() {
  size(640, 480);
  mCenters = new ArrayList();
}

void draw() {

  loadPixels();

  for (int x = 0; x < width; x++) {
    for (int y = 0; y < height; y++) {
      float minDist = width * height;
      int minCol = -1;
      int count = mCenters.size();
      for (int i = 0; i < count; i++) {
        VoronoiCenter c = (VoronoiCenter) mCenters.get(i);
        if (c != null) {
          float d = c.distance(x, y);
          if (d < minDist) {
            minDist = d;
            minCol = c.mColor;
          }
        }
      }
      pixels[(y*width) + x] = minCol;
    }
  }

  updatePixels();
  source = get();

  for (int x = 0; x < width; x++) {
    for (int y = 0; y < height; y++) {
      color c = source.get(x,y);
      for (int i = -1; i<=1; i++){
        for (int j = -1; j<=1; j++){
          if (source.get(x+i,y+j)!=c){
            pixels[(y*width) + x] = black;
          }
        }
      }
    }
  }

  updatePixels();

  //filter(BLUR);

  noLoop();
}

public void mousePressed(MouseEvent e) {
  if (mCenters.size()>20)
    mCenters.clear();
  int col = color(random(255), random(255), random(255));
  VoronoiCenter c = new VoronoiCenter(e.getX(), e.getY(), col, random(
  0.5f, 1.25f) );
  mCenters.add(c);

  redraw();
}