LoopParamTool.hpp

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//- Class: LoopParamTool
//-------------------------------------------------------------------------
// Filename      : LoopParamTool.hpp
//
// Purpose       : Surface Parameterization for mesh by triangulation flattening specific for Planar surfaces
//
// Creator       : Shiraj Khan
//
// Creation Date : 1/21/2003
//
// Owner         : Shiraj Khan
//-------------------------------------------------------------------------

#ifndef LOOP_PARAM_TOOL_HPP
#define LOOP_PARAM_TOOL_HPP

#include "ParamTool.hpp"
#include "CubitVector.hpp"
#include "CubitPoint.hpp"
#include "TDVector.hpp"

class LoopParamTool : public ParamTool
{
public:

    //- constructor
  LoopParamTool();

    //- deconstructor
  ~LoopParamTool();
    
  virtual CubitStatus set_up_space();
  virtual CubitStatus transform_to_uv(const CubitVector &, CubitVector &);
  virtual CubitStatus transform_to_xyz(CubitVector &, const CubitVector &);
    //These functions are required because this is a child of ParamTool.
    //They do nothing.

  CubitStatus transform_loopspoints_to_uv(DLIList<DLIList<CubitPoint *>*> &points);
                                                
  CubitStatus new_space_LoopParam( DLIList<DLIList<CubitPoint *>*> &loop_cubit_points,
                                   CubitVector* normal = NULL);
  
                                      
private:
    
    //- reference surface
  CubitVector Du;
  CubitVector Dv;
  CubitVector uvCenter;
  double a, b, c, d;
    //- transformation info - used with set_up_space

  CubitStatus check_selfintersecting_coincident_edges(DLIList<DLIList<CubitPoint *>*> &loop_cubit_points);

  CubitStatus transform_to_bestfit_plane(DLIList<DLIList<CubitPoint *>*> &loop_cubit_points);

  CubitStatus transform_to_uv_local(CubitVector &xyz_location, CubitVector &uv_location);

  CubitStatus transform_to_xyz_local(CubitVector &xyz_location, CubitVector &uv_location);
    
  bool double_equal(double val, double equal_to);
};

#endif // LOOP_PARAM_TOOL_HPP