define canvas(100,100);
define system(-100,-100,100,100);

set pen_color [255,0,0];
set filled 1;

set depth 10;
set fill_color [0,0,255];
draw triangle([20,-150],[20,150],[500,0]);
draw triangle([-150,20],[150,20],[0,500]);
draw triangle([-20,-150],[-20,150],[-500,0]);
draw triangle([-150,-20],[150,-20],[0,-500]);

set depth 5;
set fill_color [0,255,0];
draw triangle([80,0],[0,80],[500,500]);
draw triangle([-80,0],[0,80],[-500,500]);
draw triangle([80,0],[0,-80],[500,-500]);
draw triangle([-80,0],[0,-80],[-500,-500]);

set depth 0;
set fill_color [200,0,200];
draw triangle([30,0],[500,100],[500,-100]);
draw triangle([-30,0],[-500,100],[-500,-100]);
draw triangle([0,30],[100,500],[-100,500]);
draw triangle([0,-30],[100,-500],[-100,-500]);