//import processing.opengl.*;
//trees 1,2,3 taken from <http://www.biologie.uni-hamburg.de/b-online/lsystjava/LSys.html>
//Blprnt tree taken from <http://www.blprnt.com/processing/cherrytree/>
//grass2 and trees 4,5 taken from <http://algorithmicbotany.org/papers/abop/abop.pdf>
String [][] rulesets ={
  {"FF", "FF-[-F+F+F-]+[+F-F-F+]", "Blprnt tree"},
  {"F", "F[+F]F[-F]F", "Grass1"},
  {"F", "F[+F]F[-F][F]", "Grass2"},
  {"F", "FF-[-F+F+F]+[+F-F-F]", "Bush"},
  {"F", "F[+F][-F[-F]F]F[+F][-F]", "Axial Tree"},
  {"X", "FF", "F-[[X]+X]+F[+FX]-X", "tree1"},
  {"X", "FF", "F[+X]F[-X]+X", "tree2"},
  {"Y", "F", "X[-FFF][+FFF]FX", "YFX[+Y][-Y]", "tree3"},
  {"X", "FF", "F[+X][-X]+FX", "tree4"},
  {"X", "FF", "F-[[X]+X]+F[+FX]-X", "tree5"}};
  
ParticleSystem physics;
//ParticleSystem treePhysics;
GrowTree tree;
PFont font;
int choice;

void setup(){
  size(400, 600);//, OPENGL);
  framerate(24);
  font = loadFont("ArialMT-40.vlw");
  textFont(font, 40);
  choice = int(random(rulesets.length));
  String [] ruleset = new String[rulesets[choice].length-2];
  arraycopy(rulesets[choice], 1, ruleset, 0, rulesets[choice].length-2);
  int iterations = 3;
  if(choice > 4){
    iterations = 4;
  }
  tree = new GrowTree(width / 2, height, 1, rulesets[choice][0], ruleset, iterations);
  ellipseMode(CENTER);
}
void draw(){
  background(0);
  fill(150);
  text(rulesets[choice][rulesets[choice].length-1],0,40);
  text("nodes:"+tree.drawStackSize,0,80);
  smooth();
  tree.draw();
}
void mousePressed(){
  choice = (choice + 1) % rulesets.length;
  String [] ruleset = new String[rulesets[choice].length-2];
  arraycopy(rulesets[choice], 1, ruleset, 0, rulesets[choice].length-2);
  int iterations = 3;
  if(choice > 4){
    iterations = 4;
  }
  tree = new GrowTree(width / 2, height, 1, rulesets[choice][0], ruleset, iterations);
}