Sierpinski

int x1, y1, x2, y2, x3, y3;//set dots
int randX, randY;//random dot
int xLast, yLast;

void setup()
{
  size(800, 800);
  background(#F5ECCF);
  noStroke();
  x1 = 250;
  y1 = 250;
  x2 = 250;
  y2 = 550;
  x3 = 550;
  y3 = 50;
  randX = (int)random(100)+350;
  randY = (int)random(100)+350;
  xLast = randX;
  yLast = randY;

  //color 1
  fill(#F26530);
  ellipse(x1, y1, 5, 5);

  //color 2
  fill(#71A235);
  ellipse(x2, y2, 5, 5);

  //color 3
  fill(#27BDB2);
  ellipse(x3, y3, 5, 5);

  fill(0);
  ellipse(randX, randY, 5, 5);
  frameRate(700);
}

void draw()
{
  int roondy = (int)random(4);
  if (roondy == 1) //color 1
  {
    fill(#F26530);
    xLast = (x1 + xLast)/2;
    yLast = (y1+yLast)/2;
    ellipse(xLast, yLast, 5, 5);
  } else if (roondy == 2) //color 2
  {
    fill(#71A235);
    xLast = (x2 + xLast)/2;
    yLast = (y2+yLast)/2;
    ellipse(xLast, yLast, 5, 5);
  } else
  {
    fill(#27BDB2);
    xLast = (x3 + xLast)/2;
    yLast = (y3+yLast)/2;
    ellipse(xLast, yLast, 5, 5);
  }
}