Hopf.h

#ifndef _HOPF_H
#define _HOPF_H

//#include "ISMesh.H"
#include <vrg3d/VRG3D.h>
#include <vector>

using namespace G3D;

class Hopf {

private:
  
  int _slices, _stacks; //how many subdivisions for the geometry

  double _a, _b, _c; // the 4D co-ordinates on the tetrahedron; d = 1 - (a+b+c)

  double _colorArray[16][3]; // fixed set of colors for slices..

  void initialize_colors();
  
  void calculate_geometry(); // this will calculate the geometry for _a,_b,_c

  //  ARRAY<Wpt> _vertices;
  //  ARRAY<Wvec> _normals;
  //  ARRAY<Wpt> _colors;
  std::vector<Vector3> _vertices;
  std::vector<Vector3> _normals;
  std::vector<Vector3> _colors;

  int first; // for first time flag
public:
  
  Hopf();
  ~Hopf() {};
  
  void update_geometry(double a, double b, double c);

  void manual_increment(int code);

  void draw();

};


#endif