Processing sketch that draws circles

DrawCircles

/* 
 * DrawCircles
 * 
 */

import processing.opengl.*;

void setup() {
  size(screen.width, screen.height, OPENGL);
  frameRate(120);
  stroke(255,255,255);
  background(0);
}

float x = 50;
float y = 50;
int   s = 50;
int   c = 0;
int   l = 10;


void draw() {

      loop();
      
      stroke(random(20,240),random(20,240),random(20,240));
      strokeWeight(random(2,45));
      point(x, y);
      
      if (x > (screen.width-100)) {
        x = s;
        y = y + s;
      }
      else {
        x = x + s;
      }
      
      if (y > (screen.height-100)) {
        y = s;
        if (c > l) {
          saveFrame("drawing-####.png");
          background(0);
          c = 0;
        }
        c++;
      }

}


void keyPressed() {
  // check for 'S' or 's' and save an image
  if ((int(key) == 83) || (int(key) == 115)) {
    saveFrame("drawing-####.png");
  }
}