Mondrian Art

void setup() {
  size(400, 400);
  art(1, 1, 400, 400, N);
}
void draw() {
}
int N = 2;
void art(int x0, int y0, int x1, int y1, int N) {
  if (N == 0) {
    int sw = 3;
    color c[] = { #ff0000, #00ff00, #0000ff, #ffff00, #ffffff}; //Mondarian color palatte
    fill(c[int(random(c.length))]);
    strokeWeight(sw);
    rect (x0, y0, x1-x0-sw, y1-y0-sw);
  } else {
    int i = int(random(x0, x1));
    int j = int(random(y0, y1));
    art(x0, y0, i, j, N-1);
    art(i, y0, x1, j, N-1);
    art(x0, j, i, y1, N-1);
    art(i, j, x1, y1, N-1);
  }
}
void keyPressed() {
  art(1, 1, 400, 400, N );
}