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 // Created on: 1997-05-05
 // Created by: Jerome LEMONIER
 // Copyright (c) 1997-1999 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 _GeomPlate_PointConstraint_HeaderFile
 #define _GeomPlate_PointConstraint_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_Type.hxx>
 
 #include <GeomLProp_SLProps.hxx>
 #include <gp_Pnt.hxx>
 #include <gp_Pnt2d.hxx>
 #include <gp_Vec.hxx>
 #include <Standard_Integer.hxx>
 #include <Standard_Transient.hxx>
 class Geom_Surface;
 
 //! Defines points as constraints to be used to deform a surface.
 class GeomPlate_PointConstraint : public Standard_Transient
 {
 
 public:
   //! Constructs a point constraint object defined by Pt, a 3D point
   //! Order gives the order of constraint, one of:
   //! -   -1 i.e. none, or 0 i.e.G0 when assigned to Pt
   //! -   -1 i.e. none, 0 i.e. G0, 1 i.e. G1, 2 i.e. G2 when
   //! assigned to U, V and Surf.
   //! In this constructor, only TolDist is given.
   //! Distance tolerance represents the greatest distance
   //! allowed between the constraint and the target surface.
   //! Angular tolerance represents the largest angle allowed
   //! between the constraint and the target surface. Curvature
   //! tolerance represents the greatest difference in curvature
   //! allowed between the constraint and the target surface.
   //! Raises ConstructionError if Order is not 0 or -1
   Standard_EXPORT GeomPlate_PointConstraint(const gp_Pnt& Pt,
                                             const int     Order,
                                             const double  TolDist = 0.0001);
 
   //! Constructs a point constraint object defined by
   //! the intersection point of U and V on the surface Surf.
   //! Order gives the order of constraint, one of:
   //! -   -1 i.e. none, or 0 i.e.G0 when assigned to Pt
   //! -   -1 i.e. none, 0 i.e. G0, 1 i.e. G1, 2 i.e. G2 when
   //! assigned to U, V and Surf.
   //! In this constructor the surface to be generated must
   //! respect several tolerance values only:
   //! -   the distance tolerance TolDist
   //! -   the angular tolerance TolAng
   //! -   the curvature tolerance, TolCurv.
   //! Distance tolerance represents the greatest distance
   //! allowed between the constraint and the target surface.
   //! Angular tolerance represents the largest angle allowed
   //! between the constraint and the target surface. Curvature
   //! tolerance represents the greatest difference in curvature
   //! allowed between the constraint and the target surface.Creates a punctual constraint.
   Standard_EXPORT GeomPlate_PointConstraint(const double                     U,
                                             const double                     V,
                                             const occ::handle<Geom_Surface>& Surf,
                                             const int                        Order,
                                             const double                     TolDist = 0.0001,
                                             const double                     TolAng  = 0.01,
                                             const double                     TolCurv = 0.1);
 
   Standard_EXPORT void SetOrder(const int Order);
 
   //! Returns the order of constraint: G0, G1, and G2,
   //! controlled respectively by G0Criterion G1Criterion and G2Criterion.
   Standard_EXPORT int Order() const;
 
   //! Allows you to set the G0 criterion. This is the law
   //! defining the greatest distance allowed between the
   //! constraint and the target surface. If this criterion is not
   //! set, {TolDist, the distance tolerance from the constructor, is used
   Standard_EXPORT void SetG0Criterion(const double TolDist);
 
   //! Allows you to set the G1 criterion. This is the law
   //! defining the greatest angle allowed between the
   //! constraint and the target surface. If this criterion is not
   //! set, TolAng, the angular tolerance from the constructor, is used.
   //! Raises ConstructionError if the point is not on the surface
   Standard_EXPORT void SetG1Criterion(const double TolAng);
 
   //! Allows you to set the G2 criterion. This is the law
   //! defining the greatest difference in curvature allowed
   //! between the constraint and the target surface. If this
   //! criterion is not set, TolCurv, the curvature tolerance from
   //! the constructor, is used.
   //! Raises ConstructionError if the point is not on the surface
   Standard_EXPORT void SetG2Criterion(const double TolCurv);
 
   //! Returns the G0 criterion. This is the greatest distance
   //! allowed between the constraint and the target surface.
   Standard_EXPORT double G0Criterion() const;
 
   //! Returns the G1 criterion. This is the greatest angle
   //! allowed between the constraint and the target surface.
   //! Raises ConstructionError if the point is not on the surface.
   Standard_EXPORT double G1Criterion() const;
 
   //! Returns the G2 criterion. This is the greatest difference
   //! in curvature allowed between the constraint and the target surface.
   //! Raises ConstructionError if the point is not on the surface
   Standard_EXPORT double G2Criterion() const;
 
   Standard_EXPORT void D0(gp_Pnt& P) const;
 
   Standard_EXPORT void D1(gp_Pnt& P, gp_Vec& V1, gp_Vec& V2) const;
 
   Standard_EXPORT void D2(gp_Pnt& P, gp_Vec& V1, gp_Vec& V2, gp_Vec& V3, gp_Vec& V4, gp_Vec& V5)
     const;
 
   Standard_EXPORT bool HasPnt2dOnSurf() const;
 
   Standard_EXPORT void SetPnt2dOnSurf(const gp_Pnt2d& Pnt);
 
   Standard_EXPORT gp_Pnt2d Pnt2dOnSurf() const;
 
   Standard_EXPORT GeomLProp_SLProps& LPropSurf();
 
   DEFINE_STANDARD_RTTIEXT(GeomPlate_PointConstraint, Standard_Transient)
 
 protected:
   int myOrder;
 
 private:
   GeomLProp_SLProps         myLProp;
   gp_Pnt                    myPoint;
   gp_Pnt2d                  myPt2d;
   occ::handle<Geom_Surface> mySurf;
   gp_Vec                    myD11;
   gp_Vec                    myD12;
   gp_Vec                    myD21;
   gp_Vec                    myD22;
   gp_Vec                    myD23;
   double                    myU;
   double                    myV;
   double                    myTolDist;
   double                    myTolAng;
   double                    myTolCurv;
   bool                      hasPnt2dOnSurf;
 };
 
 #endif // _GeomPlate_PointConstraint_HeaderFile

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