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





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


Obj myObj = new Obj();


void setup(){
    size(800,400,OPENGL);
  frameRate(200);

  Anar.init(this);
  Anar.drawAxis(true);

  initForm();
}


void initForm(){


  // CREATE TWO CONTAINERS TO STORE THE POINTS
  // TWO LINES PARRALELS WITH POINTS
  Pts ptsA = new Pts();
  Pts ptsB = new Pts();


  // SET TWO TRANSFORMATIONS FOR REUSE
  Translate sideWidth = new Translate(0,30,0);
  Translate sideHeight = new Translate(10,10,10);


  // CREATE A FIRST POINT
  // ASECOND FOR THE NEXT LINE
  Pt oriA = Anar.Pt(10,20,0);
  Pt oriB = Anar.Pt(oriA,sideWidth);


  // CREATE ALL POINTS FROM sideHeight at EACH STEPS
  for (int i = 0; i<20; i++){
    Pt tmpA = Anar.Pt(oriA,sideHeight);
    Pt tmpB = Anar.Pt(oriB,sideHeight);

    ptsA.add(tmpA);
    ptsB.add(tmpB);

    // Swap oriA and oriB
    oriA = tmpA;
    oriB = tmpB;
  }


  RotateY r = new RotateY((float)Math.PI/16);


  // I HAVE THEN TWO PARRALLEL LINES
  // I'LL CREATE FACES FROM EACH PAIRS
  for (int i = 0; i<ptsA.numOfPts()-1; i++){

    // FIRST TRIANGLE ADJ
    Face triangleA = new Face();
    triangleA.add(ptsA.pt(i));
    triangleA.add(ptsA.pt(i+1));
    triangleA.add(ptsB.pt(i+1));
    triangleA.add(ptsB.pt(i));

    Transform relativeRotation = new Transform(ptsA.pt(i),ptsA.pt(i+1),r);

    triangleA.apply(relativeRotation);

    myObj.add(triangleA);


    // //FIRST TRIANGLE OPPOSITE
    // Face triangleB = new Face();
    // triangleB.add(ptsB.pt(i));
    // triangleB.add(ptsB.pt(i+1));
    // triangleB.add(ptsA.pt(i+1));
    //      
    // myObj.add(triangleB);

  }


  // myObj.add(ptsA);
  // myObj.add(ptsB);


  // //For each pair of faces (expt. the last)
  // for(int i=0; i<1; i++)
  // {
  // Face face1 = myObj.face(i);
  // Face face2 = myObj.face(i+1);
  //
  // Transform relativeRotation = new Transform(face1.pt(0),face1.pt(1),r);
  //
  //      
  // face2.apply(relativeRotation);
  // }

  myObj.fill(255,255,0);

  Anar.camTarget(myObj);
  Anar.sliders(myObj);
}


void draw(){
  background(155);

  myObj.draw();
}