void setup (){
  size (600,600);
  background(255);
  smooth();
  noLoop();
  frameRate(10);
}

void draw (){

  for (int x=12; x<height; x=x+25) {
    for (int y=12; y<height; y=y+25) {

      float rnd=random(0.5,3);
      strokeWeight(random(4));
      stroke(random(255));
      fill(random(255));
      ellipse(x, y, 20, 20);
//      arc(x, y, 50, 50, random(10), PI/rnd);
      /*
      strokeWeight(random(10));
       stroke(random(255));
       fill(random(255)); 
       rect(x, y, mouseX, mouseY);
       */


      /*
      float strk=random(255);
       float fll=random(255);
       strokeWeight(random(10));
       stroke(strk,strk,strk,random(255));
       fill(fll,fll,fll,random(255));
       rect(x-25, y-25, 50, 50);
       //      arc(x, y, 50, 50, random(10), PI/rnd);
       //     rect(x+10, y+10, random(40), random(40));
       */
    }
  }
}

void mousePressed() {
  background(random(255));
  redraw();
}

void keyPressed(){
 // save frame
  if(keyPressed) {
    if (key == 's' || key == 'S') {
      saveFrame("image-####.png");
    }
  }
}