//
// a kaleidoscopic draw thing,
// playing with the mouse position
//
// no copyright, january 2007, benn:org
//

void setup() {
  noStroke();
  size(300,300);
  background(0);
  smooth();
  ellipseMode(CENTER);
}

void draw() {
  fill(mouseX, mouseY, 0, 50);
  if (mousePressed) {
    ellipse(mouseX, mouseY, mouseY/2, mouseY/2);
    ellipse(width-mouseX, height-mouseY, mouseY/2, mouseY/2);
    ellipse(mouseX,  height-mouseY, mouseY, mouseY);
    ellipse(width-mouseX, mouseY, mouseY, mouseY);
  }
}