import processing.opengl.*;


int NUMPOINTS;
int MAXORDER;
ArrayList voronoiCrystals;
ArrayList borders;
boolean DRAWING;

void setup(){
  size(600,1000,OPENGL);
  background(255);
  //smooth();
  NUMPOINTS=5;
  MAXORDER=4;
  hint(ENABLE_OPENGL_4X_SMOOTH);

  reset();


}

void reset(){

  generateBorders();
  voronoiCrystals=new ArrayList();
  Voronoi mainVoronoi=new Voronoi(NUMPOINTS,borders,0,color(255));//color(100,100,100,255));
  VoronoiCrystal mainCrystal = new VoronoiCrystal(mainVoronoi,MAXORDER,0);
  voronoiCrystals.add(mainCrystal);
  divide(mainCrystal);
  DRAWING=true;
}

void draw(){
  

  if(DRAWING){
    translate(width/2,height+50,-500);


    
    rotateX(PI/2.3f);
    rotateZ(-PI/6.0f);
    translate(-width/2,-width/2);
    background(245,245,255);
    directionalLight(255, 253, 252,-1.0f, -0.5f, -1); 

 
    Iterator crystalItr = voronoiCrystals.iterator();

    while(crystalItr.hasNext()){
      ((VoronoiCrystal)crystalItr.next()).draw();
    }
    
    

  }
  DRAWING=false;

}


void generateBorders(){
  borders = new ArrayList();

  ArrayList borderPoints = new ArrayList();
  Segment2D border=new Segment2D();




  border=new Segment2D(0,0,width-1,0,0);
  borders.add(border);
  border=new Segment2D(0,height-1,0,0,1);
  borders.add(border);
  border=new Segment2D(width-1,0,width-1,height-1,2);
  borders.add(border);
  border=new Segment2D(width-1,height-1,0,height-1,3);
  borders.add(border);
}

void generateBorders(ArrayList periphery){
  borders = new ArrayList();
  for(int i=0;i<periphery.size();i++){
    Point2D pointi =(Point2D)periphery.get(i);
    int nexti=i+1;
    if(nexti>periphery.size()-1)nexti=0;
    Point2D pointj=(Point2D)periphery.get(nexti);    
    borders.add(new Segment2D(pointi,pointj));
  }
}

void divide(final VoronoiCrystal voronoiCrystal){
  if((voronoiCrystal.order<MAXORDER)){
    Iterator polygonItr = voronoiCrystal.polygons.iterator();
    while(polygonItr.hasNext()){
      Polygon currentPolygon= (Polygon) polygonItr.next();
      float ceiling=currentPolygon.ceiling;
      generateBorders(currentPolygon.points);
      Voronoi divVoronoi=new Voronoi(NUMPOINTS,borders,voronoiCrystal.order+1,color(red(voronoiCrystal.fillColor),green(voronoiCrystal.fillColor),blue(voronoiCrystal.fillColor),alpha(voronoiCrystal.fillColor)-20));
      VoronoiCrystal divCrystal = new VoronoiCrystal(divVoronoi,MAXORDER,ceiling);
      voronoiCrystals.add(divCrystal);
      divide(divCrystal);
    }
  }
}

void mousePressed(){
  reset();

}