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CubicProjection.H

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#ifndef _CUBIC_PROJECTION_H
#define _CUBIC_PROJECTION_H

#include <Rect.H>

namespace xchen
{
  enum CubeFace {LEFT_FACE, BACK_FACE, RIGHT_FACE, FRONT_FACE, TOP_FACE, BOTTOM_FACE};
  class CubicProjection 
  {
  public:
      static dVector3D* Cube2Sphere(int face, double u, double v);

      static void LookAtFace( int idx );  


      static XiaViewPort GetXiaViewPort(int idx, double wh_ratio=1.0);  
    
  public:
      CubicProjection(int u_res = 100, int v_res = 100) : spherePnts(0), cubeFacePnts(0), u_resolutions(u_res), v_resolutions(v_res)  { }
      ~CubicProjection() { delete [] spherePnts; delete [] cubeFacePnts; }

      void CubeTextMapping2Sphere();
      void GenerateProjectiveCoords();

  private:
      dVector3D* spherePnts;
      dVector2D* cubeFacePnts;
      int u_resolutions, v_resolutions;
  };

}
#endif

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