// This file is generated by WOK (CPPExt).
// Please do not edit this file; modify original file instead.
// The copyright and license terms as defined for the original file apply to 
// this header file considered to be the "object code" form of the original source.

#ifndef _Extrema_GenExtPS_HeaderFile
#define _Extrema_GenExtPS_HeaderFile

#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Macro.hxx>

#include <Standard_Boolean.hxx>
#include <Standard_Real.hxx>
#include <Standard_Integer.hxx>
#include <Handle_Extrema_HArray2OfPOnSurfParams.hxx>
#include <Extrema_HUBTreeOfSphere.hxx>
#include <Handle_Bnd_HArray1OfSphere.hxx>
#include <Extrema_FuncExtPS.hxx>
#include <Adaptor3d_SurfacePtr.hxx>
#include <Extrema_ExtFlag.hxx>
#include <Extrema_ExtAlgo.hxx>
#include <Handle_TColStd_HArray1OfReal.hxx>
class Extrema_HArray2OfPOnSurfParams;
class Bnd_HArray1OfSphere;
class TColStd_HArray1OfReal;
class StdFail_NotDone;
class Standard_OutOfRange;
class Standard_TypeMismatch;
class gp_Pnt;
class Adaptor3d_Surface;
class Extrema_POnSurf;
class Extrema_POnSurfParams;


//! It calculates all the extremum distances
//! between a point and a surface.
//! These distances can be minimum or maximum.
class Extrema_GenExtPS 
{
public:

  DEFINE_STANDARD_ALLOC

  
  Standard_EXPORT Extrema_GenExtPS();
  
  //! It calculates all the distances.
  //! The function F(u,v)=distance(P,S(u,v)) has an
  //! extremum when gradient(F)=0. The algorithm searchs
  //! all the zeros inside the definition ranges of the
  //! surface.
  //! NbU and NbV are used to locate the close points
  //! to find the zeros. They must be great enough
  //! such that if there is N extrema, there will
  //! be N extrema between P and the grid.
  //! TolU et TolV are used to determine the conditions
  //! to stop the iterations; at the iteration number n:
  //! (Un - Un-1) < TolU and (Vn - Vn-1) < TolV .
  Standard_EXPORT Extrema_GenExtPS(const gp_Pnt& P, const Adaptor3d_Surface& S, const Standard_Integer NbU, const Standard_Integer NbV, const Standard_Real TolU, const Standard_Real TolV, const Extrema_ExtFlag F = Extrema_ExtFlag_MINMAX, const Extrema_ExtAlgo A = Extrema_ExtAlgo_Grad);
  
  //! It calculates all the distances.
  //! The function F(u,v)=distance(P,S(u,v)) has an
  //! extremum when gradient(F)=0. The algorithm searchs
  //! all the zeros inside the definition ranges of the
  //! surface.
  //! NbU and NbV are used to locate the close points
  //! to find the zeros. They must be great enough
  //! such that if there is N extrema, there will
  //! be N extrema between P and the grid.
  //! TolU et TolV are used to determine the conditions
  //! to stop the iterations; at the iteration number n:
  //! (Un - Un-1) < TolU and (Vn - Vn-1) < TolV .
  Standard_EXPORT Extrema_GenExtPS(const gp_Pnt& P, const Adaptor3d_Surface& S, const Standard_Integer NbU, const Standard_Integer NbV, const Standard_Real Umin, const Standard_Real Usup, const Standard_Real Vmin, const Standard_Real Vsup, const Standard_Real TolU, const Standard_Real TolV, const Extrema_ExtFlag F = Extrema_ExtFlag_MINMAX, const Extrema_ExtAlgo A = Extrema_ExtAlgo_Grad);
  
  Standard_EXPORT   void Initialize (const Adaptor3d_Surface& S, const Standard_Integer NbU, const Standard_Integer NbV, const Standard_Real TolU, const Standard_Real TolV) ;
  
  Standard_EXPORT   void Initialize (const Adaptor3d_Surface& S, const Standard_Integer NbU, const Standard_Integer NbV, const Standard_Real Umin, const Standard_Real Usup, const Standard_Real Vmin, const Standard_Real Vsup, const Standard_Real TolU, const Standard_Real TolV) ;
  
  //! the algorithm is done with the point P.
  //! An exception is raised if the fields have not
  //! been initialized.
  Standard_EXPORT   void Perform (const gp_Pnt& P) ;
  
  Standard_EXPORT   void SetFlag (const Extrema_ExtFlag F) ;
  
  Standard_EXPORT   void SetAlgo (const Extrema_ExtAlgo A) ;
  
  //! Returns True if the distances are found.
  Standard_EXPORT   Standard_Boolean IsDone()  const;
  
  //! Returns the number of extremum distances.
  Standard_EXPORT   Standard_Integer NbExt()  const;
  
  //! Returns the value of the Nth resulting square distance.
  Standard_EXPORT   Standard_Real SquareDistance (const Standard_Integer N)  const;
  
  //! Returns the point of the Nth resulting distance.
  Standard_EXPORT  const  Extrema_POnSurf& Point (const Standard_Integer N)  const;




protected:





private:

  
  Standard_EXPORT   Adaptor3d_SurfacePtr Bidon()  const;
  
  Standard_EXPORT   void BuildTree() ;
  
  Standard_EXPORT   void FindSolution (const gp_Pnt& P, const Extrema_POnSurfParams& theParams) ;
  
  //! Selection of points to build grid, depending on the type of surface
  Standard_EXPORT   void GetGridPoints (const Adaptor3d_Surface& theSurf) ;
  
  //! Creation of grid of parametric points
  Standard_EXPORT   void BuildGrid (const gp_Pnt& thePoint) ;


  Standard_Boolean myDone;
  Standard_Boolean myInit;
  Standard_Real myumin;
  Standard_Real myusup;
  Standard_Real myvmin;
  Standard_Real myvsup;
  Standard_Integer myusample;
  Standard_Integer myvsample;
  Standard_Real mytolu;
  Standard_Real mytolv;
  Handle(Extrema_HArray2OfPOnSurfParams) myPoints;
  Extrema_HUBTreeOfSphere mySphereUBTree;
  Handle(Bnd_HArray1OfSphere) mySphereArray;
  Extrema_FuncExtPS myF;
  Adaptor3d_SurfacePtr myS;
  Extrema_ExtFlag myFlag;
  Extrema_ExtAlgo myAlgo;
  Handle(TColStd_HArray1OfReal) myUParams;
  Handle(TColStd_HArray1OfReal) myVParams;
  Handle(Extrema_HArray2OfPOnSurfParams) myFacePntParams;


};







#endif // _Extrema_GenExtPS_HeaderFile
