void setup() {
  size(400,400);
  smooth();
  frameRate(15);
  background(0);
}

void draw()
{
  fadeAway();          // move the execution to the function
  drawRandomEllipse(); // move the execution to the function
}

// Paint a transparent black rectangle over window
void fadeAway()
{
  fill(0,20);
  rect(0,0,width,height);
}

// Draw an ellipse of random color and size at random position
void drawRandomEllipse()
{
  fill(random(128,255),random(128,255),random(128,255));
  ellipse(random(width),random(height),100,100);
}

// START NO NOTES
// code used to capture screenshots
void keyReleased() {
  if(key == '`' && !online) save("sketch.png");
}