float heightoftriangle = cos(radians(30));    // universal constant
BFont GillSans;
int max_depth = 7;
String message = "multiple recursion";
float Gilldivide = message.length()/3.2;
int Width = 1024;
void setup(){
  size(1200,1200);
  GillSans = loadFont("GillSans.vlw.gz");
  textFont(GillSans, 20);
  fill(0);
}
void draw(){
  translate(50,50);
  background(255);
  serpinski(1);
  save("serpinski.tif");
}
void eqtri(float b){
  textLine(0,0,b,0);
  textLine(b,0,b/2,b*heightoftriangle);
  textLine(b/2,b*heightoftriangle,0,0);
}
void serpinski(int depth){
  if (depth <= max_depth) {
    float newb = Width/pow(2,depth);
    eqtri(newb);
    serpinski(depth+1);
    push();
    translate(newb,0);
    eqtri(newb);
    serpinski(depth+1);
    pop();

    push();
    translate(newb/2,newb*heightoftriangle);
    eqtri(newb);
    serpinski(depth+1);
    pop();
  }
}
void textLine(float x1, float y1, float x2, float y2){
  push();
  float dx = x2 - x1;
  float dy = y2 - y1;
  float d = sqrt(sq(dx)+sq(dy));
  textSize(d/Gilldivide);
  translate(x1,y1);
  float theta = atan2(dy,dx);
  rotate(theta);
  text(message,0,0);
  pop();
}