import processing.opengl.*;
import anar.*;
 
 
 
import lsys.Grammar;
 
 
 
/*
 * Example for Anar library by Guillaume LaBelle + Julien Nembrini
 * http://anar.ch
 */
 
 
Pts       pts = new Pts();
 
Pt        turtle, prev;
Transform T;
Translate t;
Pt        p;
RotateZ   g, d;
 
Grammar   grammar;
 
Sliders   mySlide;
 
 
void setup(){
    size(1000,500,OPENGL);
  Anar.init(this);
 
  Anar.drawAxis();
  initGrammar();
  initInterpret();
}
 
void initGrammar(){
  grammar = new Grammar("fgfddfgf");
  // here define the rules
  // * means any kind of symbol
  grammar.addRule("*f*","fgfddfgf");
 
  println(grammar);
}
 
 
void initInterpret(){
  turtle = Anar.Pt(0,0,0);
  prev = turtle;
  p = Anar.Pt(10,0,0);
  g = new RotateZ(PI/6);
  d = new RotateZ( -PI/6);
 
  pts = new Pts();
  pts.add(turtle);
 
  t = new Translate(p);
  T = new Transform(turtle,t);
  drawGrammar();
}
 
void drawGrammar(){
  for (int i = 0; i<grammar.numOfSymbols(); i++){
 
 
    switch(grammar.symbol(i).charAt(0)){
      case 'f':
        prev = turtle;
        turtle = Anar.Pt(turtle,T);
        pts.add(turtle);
        T = new Transform(t);
 
      case 'g':
        T.apply(new Transform(prev,turtle,g));
      break;
      case 'd':
        T.apply(new Transform(prev,turtle,d));
      break;
      default:
      break;
 
    }
  }
  mySlide = new Sliders(pts);
}
 
void draw(){
  background(153);
  pts.draw();
  mySlide.draw();
}
 
 
void keyPressed(){
  if(key==' '){
    grammar.step();
    drawGrammar();
    println(grammar);
  }
  if(key=='r'){
    grammar.reset();
    println(grammar);
 
  }
}