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':
        Pt next = Anar.Pt(turtle,T);
        pts.add(next);
        turtle = next;
        T = new Transform();
        T.add(t);
      break;
      case 'g':
        T.add(new Transform(turtle,g));
      break;
      case 'd':
        T.add(new Transform(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);

  }
}