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 // Created on: 1993-12-02
 // Created by: Jacques GOUSSARD
 // Copyright (c) 1993-1999 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 _Blend_Point_HeaderFile
 #define _Blend_Point_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
 #include <Standard_Handle.hxx>
 
 #include <gp_Pnt.hxx>
 #include <gp_Vec.hxx>
 #include <Standard_Boolean.hxx>
 #include <gp_Vec2d.hxx>
 class gp_Vec2d;
 
 class Blend_Point
 {
 public:
   DEFINE_STANDARD_ALLOC
 
   Standard_EXPORT Blend_Point();
 
   //! Creates a point on 2 surfaces, with tangents.
   Standard_EXPORT Blend_Point(const gp_Pnt&       Pt1,
                               const gp_Pnt&       Pt2,
                               const Standard_Real Param,
                               const Standard_Real U1,
                               const Standard_Real V1,
                               const Standard_Real U2,
                               const Standard_Real V2,
                               const gp_Vec&       Tg1,
                               const gp_Vec&       Tg2,
                               const gp_Vec2d&     Tg12d,
                               const gp_Vec2d&     Tg22d);
 
   //! Creates a point on 2 surfaces, without tangents.
   Standard_EXPORT Blend_Point(const gp_Pnt&       Pt1,
                               const gp_Pnt&       Pt2,
                               const Standard_Real Param,
                               const Standard_Real U1,
                               const Standard_Real V1,
                               const Standard_Real U2,
                               const Standard_Real V2);
 
   //! Creates a point on a surface and a curve, with tangents.
   Standard_EXPORT Blend_Point(const gp_Pnt&       Pts,
                               const gp_Pnt&       Ptc,
                               const Standard_Real Param,
                               const Standard_Real U,
                               const Standard_Real V,
                               const Standard_Real W,
                               const gp_Vec&       Tgs,
                               const gp_Vec&       Tgc,
                               const gp_Vec2d&     Tg2d);
 
   //! Creates a point on a surface and a curve, without tangents.
   Standard_EXPORT Blend_Point(const gp_Pnt&       Pts,
                               const gp_Pnt&       Ptc,
                               const Standard_Real Param,
                               const Standard_Real U,
                               const Standard_Real V,
                               const Standard_Real W);
 
   //! Creates a point on a surface and a curve on surface,
   //! with tangents.
   Standard_EXPORT Blend_Point(const gp_Pnt&       Pt1,
                               const gp_Pnt&       Pt2,
                               const Standard_Real Param,
                               const Standard_Real U1,
                               const Standard_Real V1,
                               const Standard_Real U2,
                               const Standard_Real V2,
                               const Standard_Real PC,
                               const gp_Vec&       Tg1,
                               const gp_Vec&       Tg2,
                               const gp_Vec2d&     Tg12d,
                               const gp_Vec2d&     Tg22d);
 
   //! Creates a point on a surface and a curve on surface,
   //! without tangents.
   Standard_EXPORT Blend_Point(const gp_Pnt&       Pt1,
                               const gp_Pnt&       Pt2,
                               const Standard_Real Param,
                               const Standard_Real U1,
                               const Standard_Real V1,
                               const Standard_Real U2,
                               const Standard_Real V2,
                               const Standard_Real PC);
 
   //! Creates a point on two curves on surfaces, with tangents.
   Standard_EXPORT Blend_Point(const gp_Pnt&       Pt1,
                               const gp_Pnt&       Pt2,
                               const Standard_Real Param,
                               const Standard_Real U1,
                               const Standard_Real V1,
                               const Standard_Real U2,
                               const Standard_Real V2,
                               const Standard_Real PC1,
                               const Standard_Real PC2,
                               const gp_Vec&       Tg1,
                               const gp_Vec&       Tg2,
                               const gp_Vec2d&     Tg12d,
                               const gp_Vec2d&     Tg22d);
 
   //! Creates a point on two curves on surfaces, with tangents.
   Standard_EXPORT Blend_Point(const gp_Pnt&       Pt1,
                               const gp_Pnt&       Pt2,
                               const Standard_Real Param,
                               const Standard_Real U1,
                               const Standard_Real V1,
                               const Standard_Real U2,
                               const Standard_Real V2,
                               const Standard_Real PC1,
                               const Standard_Real PC2);
 
   //! Set the values for a point on 2 surfaces, with tangents.
   Standard_EXPORT void SetValue(const gp_Pnt&       Pt1,
                                 const gp_Pnt&       Pt2,
                                 const Standard_Real Param,
                                 const Standard_Real U1,
                                 const Standard_Real V1,
                                 const Standard_Real U2,
                                 const Standard_Real V2,
                                 const gp_Vec&       Tg1,
                                 const gp_Vec&       Tg2,
                                 const gp_Vec2d&     Tg12d,
                                 const gp_Vec2d&     Tg22d);
 
   //! Set the values for a point on 2 surfaces, without tangents.
   Standard_EXPORT void SetValue(const gp_Pnt&       Pt1,
                                 const gp_Pnt&       Pt2,
                                 const Standard_Real Param,
                                 const Standard_Real U1,
                                 const Standard_Real V1,
                                 const Standard_Real U2,
                                 const Standard_Real V2);
 
   //! Set the values for a point on a surface and a curve,
   //! with tangents.
   Standard_EXPORT void SetValue(const gp_Pnt&       Pts,
                                 const gp_Pnt&       Ptc,
                                 const Standard_Real Param,
                                 const Standard_Real U,
                                 const Standard_Real V,
                                 const Standard_Real W,
                                 const gp_Vec&       Tgs,
                                 const gp_Vec&       Tgc,
                                 const gp_Vec2d&     Tg2d);
 
   //! Set the values for a point on a surface and a curve,
   //! without tangents.
   Standard_EXPORT void SetValue(const gp_Pnt&       Pts,
                                 const gp_Pnt&       Ptc,
                                 const Standard_Real Param,
                                 const Standard_Real U,
                                 const Standard_Real V,
                                 const Standard_Real W);
 
   //! Creates a point on a surface and a curve on surface,
   //! with tangents.
   Standard_EXPORT void SetValue(const gp_Pnt&       Pt1,
                                 const gp_Pnt&       Pt2,
                                 const Standard_Real Param,
                                 const Standard_Real U1,
                                 const Standard_Real V1,
                                 const Standard_Real U2,
                                 const Standard_Real V2,
                                 const Standard_Real PC,
                                 const gp_Vec&       Tg1,
                                 const gp_Vec&       Tg2,
                                 const gp_Vec2d&     Tg12d,
                                 const gp_Vec2d&     Tg22d);
 
   //! Creates a point on a surface and a curve on surface,
   //! without tangents.
   Standard_EXPORT void SetValue(const gp_Pnt&       Pt1,
                                 const gp_Pnt&       Pt2,
                                 const Standard_Real Param,
                                 const Standard_Real U1,
                                 const Standard_Real V1,
                                 const Standard_Real U2,
                                 const Standard_Real V2,
                                 const Standard_Real PC);
 
   //! Creates a point on two curves on surfaces, with tangents.
   Standard_EXPORT void SetValue(const gp_Pnt&       Pt1,
                                 const gp_Pnt&       Pt2,
                                 const Standard_Real Param,
                                 const Standard_Real U1,
                                 const Standard_Real V1,
                                 const Standard_Real U2,
                                 const Standard_Real V2,
                                 const Standard_Real PC1,
                                 const Standard_Real PC2,
                                 const gp_Vec&       Tg1,
                                 const gp_Vec&       Tg2,
                                 const gp_Vec2d&     Tg12d,
                                 const gp_Vec2d&     Tg22d);
 
   //! Creates a point on two curves on surfaces, without tangents.
   Standard_EXPORT void SetValue(const gp_Pnt&       Pt1,
                                 const gp_Pnt&       Pt2,
                                 const Standard_Real Param,
                                 const Standard_Real U1,
                                 const Standard_Real V1,
                                 const Standard_Real U2,
                                 const Standard_Real V2,
                                 const Standard_Real PC1,
                                 const Standard_Real PC2);
 
   //! Creates a point on two curves.
   Standard_EXPORT void SetValue(const gp_Pnt&       Pt1,
                                 const gp_Pnt&       Pt2,
                                 const Standard_Real Param,
                                 const Standard_Real PC1,
                                 const Standard_Real PC2);
 
   //! Changes parameter on existing point
   void SetParameter(const Standard_Real Param);
 
   Standard_Real Parameter() const;
 
   //! Returns Standard_True if it was not possible to compute
   //! the tangent vectors at PointOnS1 and/or PointOnS2.
   Standard_Boolean IsTangencyPoint() const;
 
   const gp_Pnt& PointOnS1() const;
 
   const gp_Pnt& PointOnS2() const;
 
   void ParametersOnS1(Standard_Real& U, Standard_Real& V) const;
 
   void ParametersOnS2(Standard_Real& U, Standard_Real& V) const;
 
   const gp_Vec& TangentOnS1() const;
 
   const gp_Vec& TangentOnS2() const;
 
   gp_Vec2d Tangent2dOnS1() const;
 
   gp_Vec2d Tangent2dOnS2() const;
 
   const gp_Pnt& PointOnS() const;
 
   const gp_Pnt& PointOnC() const;
 
   void ParametersOnS(Standard_Real& U, Standard_Real& V) const;
 
   Standard_Real ParameterOnC() const;
 
   const gp_Vec& TangentOnS() const;
 
   const gp_Vec& TangentOnC() const;
 
   gp_Vec2d Tangent2d() const;
 
   const gp_Pnt& PointOnC1() const;
 
   const gp_Pnt& PointOnC2() const;
 
   Standard_Real ParameterOnC1() const;
 
   Standard_Real ParameterOnC2() const;
 
   const gp_Vec& TangentOnC1() const;
 
   const gp_Vec& TangentOnC2() const;
 
 protected:
 private:
   gp_Pnt           pt1;
   gp_Pnt           pt2;
   gp_Vec           tg1;
   gp_Vec           tg2;
   Standard_Real    prm;
   Standard_Real    u1;
   Standard_Real    v1;
   Standard_Real    u2;
   Standard_Real    v2;
   Standard_Real    pc1;
   Standard_Real    pc2;
   Standard_Real    utg12d;
   Standard_Real    vtg12d;
   Standard_Real    utg22d;
   Standard_Real    vtg22d;
   Standard_Boolean hass1;
   Standard_Boolean hass2;
   Standard_Boolean hasc1;
   Standard_Boolean hasc2;
   Standard_Boolean istgt;
 };
 
 #include <Blend_Point.lxx>
 
 #endif // _Blend_Point_HeaderFile

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