Sierpinski code from tsoule88

function setup() {

  createCanvas(windowWidth, windowHeight, WEBGL); // size(800,1000,P3D);

  noStroke();

  colorMode(HSB); // colorMode(HSB,360,100,100);

}

​

function draw() {

  background(0);

  push(); // pushMatrix();

  translate(width*0.5,height*0.35);

  // my_triangle(0,0,500,0);

  my_triangle(50 - windowWidth/2, -50 - windowHeight/2, 300, 90);

  pop(); // popMatrix();

}

​

function my_triangle(x, y, side, hue){

  push(); // pushMatrix();

  translate(x,y);

  rotateY(frameCount*0.01);

  len = 0.5 * side * cos((1.0/6.0)*PI);

  fill(hue,100,100);

  triangle(0,-len, -0.5*side,len, 0.5*side,len);

  if (side > 4){

    my_triangle(0,1.5*len,side*0.5,(hue+30)%360);

    my_triangle(-0.5*side, -0.5*len, side*0.5,(hue+30)%360);

    my_triangle(0.5*side, -0.5*len, side*0.5,(hue+30)%360);

  }

​

  pop() // popMatrix();

}