void setup (){
  size (600,600);
  background(240);
  smooth();
  noLoop();
}

void draw (){

  for (int x=0; x<height; x=x+55) {
    for (int y=0; y<height; y=y+55) {
      float rnd=random(0.5,0.9);
      //      stroke(random(255),random(10),random(255),random(80,100));
      noStroke();
      fill(random(255),random(10),random(10));
      ellipseMode(CORNER);
      rect(x, y, 55, 55);
      fill(random(255),random(10),random(10));
      arc(x, y, 50, 50, 0, PI/rnd);
    }
  }
}

void mousePressed() {
  background(240);
  redraw();
}
void keyPressed(){
 // save frame
  if(keyPressed) {
    if (key == 's' || key == 'S') {
      saveFrame("image-####.png");
    }
  }
}