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);
  Anar.init(this);
  Anar.drawAxis();
  myObj = createModule();
}

Obj createModule(){
  // Initialize a local object
  Obj module = new Obj();

  // First construction: a basic line
  Pts construction = new Pts();

  Param c = new Param(100,0,200);
  Param z = new Param(0);
  
  construction.add(0,0,0);
  construction.add(30,20,0);
  construction.add(60, -20,0);
  construction.add(Anar.Pt(c,z,z));
  construction.add(120,0,40);
  construction.add(150,0,0);
  construction.add(180,0,0);

  // From this first set of points, create a curve of degree 4
  CSpline curve = new CSpline(construction,4);

  Param size = new Param(10,0,50);
  
  // Track parameters of point C
  Anar.sliders(c);
  Anar.sliders(size);

  // Create set of Points from an uniform distribution of points
  Pts curveWithPointsUniform = curve.getPts(200);
  module.add(curveWithPointsUniform);


  // now create a sweep from the darboux vector extracted 
  // from the sequence of points on the curve
  Pts ptsA;
  Pts ptsB;
  Pts ptsC;
  
  // /////////////////////////////
  ptsA = curveWithPointsUniform;
  ptsB = new Pts();
  ptsC = new Pts();
  
  for (int i1 = 1; i1<ptsA.numOfPts()-2; i1++){
      Pt p0 = ptsA.pt(i1-1);
      Pt p1 = ptsA.pt(i1);
      Pt p2 = ptsA.pt(i1+1);
      Pt p3 = ptsA.pt(i1+2);

      if (i1%33==0) module.add(new Circle(p0,p1,p2));
      PtDarboux omega = new PtDarboux(p0,p1,p2,p3,size);
      
      ptsB.add(omega);
//        ptsC.add(Anar.Pt(p1).minus(omega).multiply(-1).plus(p1));
  }
  ptsA.remove(0);
  
  module.add( new SweepTwoPaths(ptsA,ptsB));    
  
  // note: glitches appear in the sweep because the cardinal spline is not C_3 continuous
  
  Anar.camTarget(construction);

  return module;
}


void draw(){
  background(155);
  myObj.draw();
}


void keyPressed(){

  if(key==' ')
    RhinoScript.export(myObj,"curveTest");
}