void setup() {
  size(800, 600);
}

void draw() {
  background(0); // Hintergrund schwarz 
  fill(255, 255, 0);
  ellipse(mouseX, mouseY, 190, 190); // Gesicht
  arc(mouseX, mouseY+10, 130, 90, radians(0), radians(180)); // Mund
  ellipse(mouseX-40, mouseY-30, 40, 40); // Auge links
  ellipse(mouseX+40, mouseY-30, 40, 40); // Auge rechts
}