processing recursion demo

// All Examples Written by Casey Reas and Ben Fry// unless otherwise stated.void setup() {  size(200, 200);  noStroke();  smooth();  noLoop();}void draw() {  drawCircle(126, 170, 6);}void drawCircle(int x, int radius, int level) {                      float tt = 126 * level/4.0;  fill(tt);  ellipse(x, 100, radius*2, radius*2);        if(level > 1) {    level = level - 1;    drawCircle(x - radius/2, radius/2, level);    drawCircle(x + radius/2, radius/2, level);  }}