/* built with Studio Sketchpad: 
 *   https://sketchpad.cc
 * 
 * observe the evolution of this sketch: 
 *   https://itct.sketchpad.cc/sp/pad/view/ro.UY3oAZ89Nib/rev.8
 * 
 * authors: 
 *   JongHwan Oh

 * license (unless otherwise specified): 
 *   creative commons attribution-share alike 3.0 license.
 *   https://creativecommons.org/licenses/by-sa/3.0/ 
 */ 



void setup() {
  size(400,400);
  noStroke();
  background(255);
}
void draw() {
  fill(random(0,255), random(0,255), random(0,255), random(0,255));
  ellipse(random(0,width), random(0, height), 50, 50);
}
void mousePressed() {
  background(255);
}