sorry fo real. this is some jank shit.

sierpinskiArrowhead.pde

/*
serpinski arrow head
january 28th, 2015
*/

// doin what i do best son

void setup() {
  size(512,512);
  background(255);
  stroke(0);
}

void draw() {
  pushMatrix();
  translate(0,height-5);
  iterate(width, 7, 7, 1); // ewwwww
  popMatrix();
}

void iterate(int len, int starting, int i, int segment) {
  if (i == 0) {
    line(0,0,len,0);
  } else {
    int flgg = (starting%2==0) ? 1 : -1; // this is fugly as shit son
    int i_flag = (i%2 == 0) ? -1 : 1;
    int s_flag = (segment%2==0) ? -1 : 1;
    int flag = flgg*i_flag*s_flag;
    // starting points
    PVector p1 = new PVector(0,0);
    //ellipse(p1.x,p1.y,5,5);
    PVector p2 = new PVector(len/4,flag*(sqrt(3)*len/4));
    //ellipse(p2.x,p2.y,5,5);
    PVector p3 = new PVector(3*len/4,flag*(sqrt(3)*len/4));
    //ellipse(p3.x,p3.y,5,5);
    
    pushMatrix();
    translate(p1.x,p1.y);
    rotate(flag*PI/3);
    iterate(len/2,starting,i-1,segment*3);
    popMatrix();
    
    pushMatrix();
    translate(p2.x,p2.y);
    iterate(len/2,starting,i-1,segment*3+1);
    popMatrix();
    
    pushMatrix();
    translate(p3.x,p3.y);
    rotate(-1*flag*PI/3);
    iterate(len/2,starting,i-1,segment*3+2);
    popMatrix();
  }
}