import processing.opengl.*;
import anar.*;


import java.util.ArrayList;



/*
 * Example for Anar library by Guillaume LaBelle + Julien Nembrini
 * http://anar.ch
 */


Sliders parameters;

Pt      a, b, c;

Obj     obj;

int     nIteration = 0;

void setup(){
    size(800,400,OPENGL);
  Anar.init(this);

  Scene.autoSeek = false;

  obj = new Obj();

  initForm();

  Pts.globalRender = new RenderPtsAll();

}


void reset(){
  obj.faces.clear();
  obj.pts.ptList.clear();

  Pts facePts = new Pts();
  facePts.add(a);
  facePts.add(b);
  facePts.add(c);
  Face f = new Face(facePts);

  obj.add(f);

  nIteration = 0;

  addFourth = false;
}

void initForm(){

  a = Anar.Pt( -60, -30);
  b = Anar.Pt(60, -30);
  c = Anar.Pt(0,60);

  // obj.add(AB);
  // obj.add(BC);
  // obj.add(AC);


  Pts facePts = new Pts();
  facePts.add(a);
  facePts.add(b);
  facePts.add(c);
  Face f = new Face(facePts);

  obj.add(f);

  parameters = new Sliders(a);
  // println(parameters);
  Anar.camTarget(obj);
}

void loopSubdiv(){


  // use point of gravity of original point as anchor
  // Pt pp = Anar.Pt( .33f*a.x()+.33f*b.x()+.33f*c.x(),
  // .33f*a.y()+.33f*b.y()+.33f*c.y(),
  // .33f*a.z()+.33f*b.z()+.33f*c.z());

  Pt pp = Anar.Pt(.2f*a.x()+.3f*b.x()+.5f*c.x(),.2f*a.y()+.3f*b.y()+.5f*c.y(),.2f*a.z()+.3f*b.z()+.5f*c.z());

  ArrayList newFaces = new ArrayList();

  for (int k = 0; k<obj.numOfFaces(); k++){
    Face f = obj.face(k);

    // get the vertices of the triangle
    Pt aa = f.pt(0);
    Pt bb = f.pt(1);
    Pt cc = f.pt(2);

    // add first subdivision
    Pts f1Pts = new Pts();
    f1Pts.add(aa);
    f1Pts.add(bb);
    f1Pts.add(pp);
    Face f1 = new Face(f1Pts);

    // add second subdivision
    Pts f2Pts = new Pts();
    f2Pts.add(bb);
    f2Pts.add(cc);
    f2Pts.add(pp);
    Face f2 = new Face(f2Pts);

    // add third subdivision
    Pts f3Pts = new Pts();
    f3Pts.add(aa);
    f3Pts.add(pp);
    f3Pts.add(cc);
    Face f3 = new Face(f3Pts);

    newFaces.add(f1);
    newFaces.add(f2);
    newFaces.add(f3);
  }

  obj = new Obj();

  for (int i = 0; i<newFaces.size(); i++)
    obj.add((Face)newFaces.get(i));

  Anar.camTarget(obj);

}


void sierpinskyIteration(){

  nIteration++;
  println(nIteration);

  final float z = 20;

  ArrayList newFaces = new ArrayList();

  for (int k = 0; k<obj.numOfFaces(); k++){
    Face f = obj.face(k);

    // get the vertices of the triangle
    Pt aa = f.pt(0);
    Pt bb = f.pt(1);
    Pt cc = f.pt(2);


    // get the middle points
    Pts AB = new PtsMid(aa,bb,2);
    Pts BC = new PtsMid(bb,cc,2);
    Pts AC = new PtsMid(aa,cc,2);

    Pt ab = Anar.Pt(AB.pt(1));
    float param = z/ (nIteration*nIteration);
    float mult = .5f;

    ab.translate(mult* (random((float)param)-param/2),mult* (random((float)param)-param/2),param);
    // ab.translate(0, 0, z/(nIteration*nIteration));

    Pt bc = Anar.Pt(BC.pt(1));
    bc.translate(mult* (random((float)param)-param/2),mult* (random((float)param)-param/2),param);
    // bc.translate(0, 0, z/(nIteration*nIteration));

    Pt ac = Anar.Pt(AC.pt(1));
    ac.translate(mult* (random((float)param)-param/2),mult* (random((float)param)-param/2),param);
    // ac.translate(0, 0, z/(nIteration*nIteration));

    // add first subdivision
    Pts f1Pts = new Pts();
    f1Pts.add(aa);
    f1Pts.add(ab);
    f1Pts.add(ac);
    Face f1 = new Face(f1Pts);

    // add second subdivision
    Pts f2Pts = new Pts();
    f2Pts.add(ab);
    f2Pts.add(bb);
    f2Pts.add(bc);
    Face f2 = new Face(f2Pts);

    // add third subdivision
    Pts f3Pts = new Pts();
    f3Pts.add(ac);
    f3Pts.add(bc);
    f3Pts.add(cc);
    Face f3 = new Face(f3Pts);

    if(addFourth){
      // add fourth subdivision
      Pts f4Pts = new Pts();
      f4Pts.add(ab);
      f4Pts.add(bc);
      f4Pts.add(ac);
      Face f4 = new Face(f4Pts);
      newFaces.add(f4);
    }
    newFaces.add(f1);
    newFaces.add(f2);
    newFaces.add(f3);


  }

  obj.faces.clear();
  obj.faces = newFaces;

}


void draw(){
  background(153);

  // ParametricValue v = parameters.get(0);
  // v.set(v.get()+ random(10)-5);

  obj.draw();
}



boolean addFourth = false;


void keyPressed(){

  switch(key){
    case 'q':
      sierpinskyIteration();
    break;
    case 'w':
      addFourth = !addFourth;
    break;
    case 'e':
      reset();
    break;
    case 'r':
      loopSubdiv();
    break;


  }


}