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 // Created on: 1995-07-02
 // Created by: Laurent BUCHARD
 // Copyright (c) 1995-1999 Matra Datavision
 // Copyright (c) 1999-2014 OPEN CASCADE SAS
 //
 // This file is part of Open CASCADE Technology software library.
 //
 // This library is free software; you can redistribute it and/or modify it under
 // the terms of the GNU Lesser General Public License version 2.1 as published
 // by the Free Software Foundation, with special exception defined in the file
 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
 // distribution for complete text of the license and disclaimer of any warranty.
 //
 // Alternatively, this file may be used under the terms of Open CASCADE
 // commercial license or contractual agreement.
 
 #ifndef _IntPatch_HInterTool_HeaderFile
 #define _IntPatch_HInterTool_HeaderFile
 
 #include <Adaptor2d_Curve2d.hxx>
 #include <Adaptor3d_Surface.hxx>
 
 class gp_Pnt2d;
 class Adaptor3d_HVertex;
 class gp_Pnt;
 
 //! Tool for the intersection between 2 surfaces.
 //! Regroupe pour l instant les methodes hors Adaptor3d...
 class IntPatch_HInterTool
 {
 public:
   DEFINE_STANDARD_ALLOC
 
   Standard_EXPORT IntPatch_HInterTool();
 
   static bool SingularOnUMin(const occ::handle<Adaptor3d_Surface>& S);
 
   static bool SingularOnUMax(const occ::handle<Adaptor3d_Surface>& S);
 
   static bool SingularOnVMin(const occ::handle<Adaptor3d_Surface>& S);
 
   static bool SingularOnVMax(const occ::handle<Adaptor3d_Surface>& S);
 
   Standard_EXPORT static int NbSamplesU(const occ::handle<Adaptor3d_Surface>& S,
                                         const double                          u1,
                                         const double                          u2);
 
   Standard_EXPORT static int NbSamplesV(const occ::handle<Adaptor3d_Surface>& S,
                                         const double                          v1,
                                         const double                          v2);
 
   Standard_EXPORT int NbSamplePoints(const occ::handle<Adaptor3d_Surface>& S);
 
   Standard_EXPORT void SamplePoint(const occ::handle<Adaptor3d_Surface>& S,
                                    const int                             Index,
                                    double&                               U,
                                    double&                               V) const;
 
   //! Returns True if all the intersection point and edges
   //! are known on the Arc.
   //! The intersection point are given as vertices.
   //! The intersection edges are given as intervals between
   //! two vertices.
   Standard_EXPORT static bool HasBeenSeen(const occ::handle<Adaptor2d_Curve2d>& C);
 
   //! returns the number of points which is used to make
   //! a sample on the arc. this number is a function of
   //! the Surface and the CurveOnSurface complexity.
   Standard_EXPORT static int NbSamplesOnArc(const occ::handle<Adaptor2d_Curve2d>& A);
 
   //! Returns the parametric limits on the arc C.
   //! These limits must be finite : they are either
   //! the real limits of the arc, for a finite arc,
   //! or a bounding box for an infinite arc.
   Standard_EXPORT static void Bounds(const occ::handle<Adaptor2d_Curve2d>& C,
                                      double&                               Ufirst,
                                      double&                               Ulast);
 
   //! Projects the point P on the arc C.
   //! If the methods returns true, the projection is
   //! successful, and Paramproj is the parameter on the arc
   //! of the projected point, Ptproj is the projected Point.
   //! If the method returns false, Param proj and Ptproj
   //! are not significant.
   Standard_EXPORT static bool Project(const occ::handle<Adaptor2d_Curve2d>& C,
                                       const gp_Pnt2d&                       P,
                                       double&                               Paramproj,
                                       gp_Pnt2d&                             Ptproj);
 
   //! Returns the parametric tolerance used to consider
   //! that the vertex and another point meet, i-e
   //! if std::abs(parameter(Vertex) - parameter(OtherPnt))<=
   //! Tolerance, the points are "merged".
   Standard_EXPORT static double Tolerance(const occ::handle<Adaptor3d_HVertex>& V,
                                           const occ::handle<Adaptor2d_Curve2d>& C);
 
   //! Returns the parameter of the vertex V on the arc A.
   Standard_EXPORT static double Parameter(const occ::handle<Adaptor3d_HVertex>& V,
                                           const occ::handle<Adaptor2d_Curve2d>& C);
 
   //! Returns the number of intersection points on the arc A.
   Standard_EXPORT static int NbPoints(const occ::handle<Adaptor2d_Curve2d>& C);
 
   //! Returns the value (Pt), the tolerance (Tol), and
   //! the parameter (U) on the arc A , of the intersection
   //! point of range Index.
   Standard_EXPORT static void Value(const occ::handle<Adaptor2d_Curve2d>& C,
                                     const int                             Index,
                                     gp_Pnt&                               Pt,
                                     double&                               Tol,
                                     double&                               U);
 
   //! Returns True if the intersection point of range Index
   //! corresponds with a vertex on the arc A.
   Standard_EXPORT static bool IsVertex(const occ::handle<Adaptor2d_Curve2d>& C, const int Index);
 
   //! When IsVertex returns True, this method returns the
   //! vertex on the arc A.
   Standard_EXPORT static void Vertex(const occ::handle<Adaptor2d_Curve2d>& C,
                                      const int                             Index,
                                      occ::handle<Adaptor3d_HVertex>&       V);
 
   //! returns the number of part of A solution of the
   //! of intersection problem.
   Standard_EXPORT static int NbSegments(const occ::handle<Adaptor2d_Curve2d>& C);
 
   //! Returns True when the segment of range Index is not
   //! open at the left side. In that case, IndFirst is the
   //! range in the list intersection points (see NbPoints)
   //! of the one which defines the left bound of the segment.
   //! Otherwise, the method has to return False, and IndFirst
   //! has no meaning.
   Standard_EXPORT static bool HasFirstPoint(const occ::handle<Adaptor2d_Curve2d>& C,
                                             const int                             Index,
                                             int&                                  IndFirst);
 
   //! Returns True when the segment of range Index is not
   //! open at the right side. In that case, IndLast is the
   //! range in the list intersection points (see NbPoints)
   //! of the one which defines the right bound of the segment.
   //! Otherwise, the method has to return False, and IndLast
   //! has no meaning.
   Standard_EXPORT static bool HasLastPoint(const occ::handle<Adaptor2d_Curve2d>& C,
                                            const int                             Index,
                                            int&                                  IndLast);
 
   //! Returns True when the whole restriction is solution
   //! of the intersection problem.
   Standard_EXPORT static bool IsAllSolution(const occ::handle<Adaptor2d_Curve2d>& C);
 
 private:
   double uinf;
   double vinf;
   double usup;
   double vsup;
 };
 
 #include <IntPatch_HInterTool.lxx>
 
 #endif // _IntPatch_HInterTool_HeaderFile

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