float x, y, diam, number, xroma;

void setup() {
  size(640, 360);
  background(51);
  noStroke();
  noLoop();
}

void draw() {
  // O protos kyklos tha emfanistei sto kentro toy parathyroy
  // kai tha exei diametro 300 kai mayro xroma. Theloume 5 kykloys.
  x = width/2;
  y = height/2;
  diam = 300;
  number = 5;
  xroma = 0;
  
  fill(xroma);
  ellipse(x, y, diam, diam);
  
  // O 2os kyklos tha exei idio kentro, alla diametro mikroteri
  // kata 300/number (dil. arxiki diametro dia plithos kyklon)
  // kai xroma megalytero (dil. pio anoixtoxromo) kata 255/number
  diam = diam - 300/number;
  xroma = xroma + 255/number;
  
  fill(xroma);
  ellipse(x, y, diam, diam);
  
  // To idio isxyei gia ton 3o kyklo
  diam = diam - 300/number;
  xroma = xroma + 255/number;
  
  fill(xroma);
  ellipse(x, y, diam, diam);
  
  // To idio isxyei gia ton 4o kyklo
  // Sympliroste ton kodika edo
  
  
  // To idio isxyei gia ton 5o kyklo
  // Sympliroste ton kodika edo  
  
  
  
  
} // telos draw