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 // Created on: 1993-07-08
 // Created by: Isabelle GRIGNON
 // 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 _BndLib_Add3dCurve_HeaderFile
 #define _BndLib_Add3dCurve_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
 
 //
 class Adaptor3d_Curve;
 class Bnd_Box;
 
 
 //! Computes the bounding box for a curve in 3d.
 //! Functions to add a 3D curve to a bounding box.
 //! The 3D curve is defined from a Geom curve.
 class BndLib_Add3dCurve 
 {
 public:
 
   DEFINE_STANDARD_ALLOC
 
   
   //! Adds to the bounding box B the curve C
   //! B is then enlarged by the tolerance value Tol.
   //! Note: depending on the type of curve, one of the following
   //! representations of the curve C is used to include it in the bounding box B:
   //! -   an exact representation if C is built from a line, a circle   or a conic curve,
   //! -   the poles of the curve if C is built from a Bezier curve or   a BSpline curve,
   //! if not, the points of an approximation of the curve C.
   //! Warning
   //! C is an adapted curve, that is, an object which is an interface between:
   //! -   the services provided by a 3D curve from the package   Geom
   //! -   and those required of the curve by the computation algorithm.
   //! The adapted curve is created in the following way:
   //! Handle(Geom_Curve) mycurve = ... ;
   //! GeomAdaptor_Curve C(mycurve);
   //! The bounding box B is then enlarged by adding it:
   //! Bnd_Box B;
   //! // ...
   //! Standard_Real Tol = ... ;
   //! Add3dCurve::Add ( C, Tol, B );
   //! Exceptions
   //! Standard_Failure if the curve is built from:
   //! -   a Geom_Line, or
   //! -   a Geom_Parabola, or
   //! -   a Geom_Hyperbola,
   //! and P1 and P2 are either two negative infinite real
   //! numbers, or two positive infinite real numbers.
   Standard_EXPORT static void Add (const Adaptor3d_Curve& C, const Standard_Real Tol, Bnd_Box& B);
   
   //! Adds to the bounding box B the curve C
   //! the arc of the curve C limited by the two parameter values P1 and P2.
   //! Note: depending on the type of curve, one of the following
   //! representations of the curve C is used to include it in the bounding box B:
   //! -   an exact representation if C is built from a line, a circle   or a conic curve,
   //! -   the poles of the curve if C is built from a Bezier curve or   a BSpline curve,
   //! if not, the points of an approximation of the curve C.
   //! Warning
   //! C is an adapted curve, that is, an object which is an interface between:
   //! -   the services provided by a 3D curve from the package   Geom
   //! -   and those required of the curve by the computation algorithm.
   //! The adapted curve is created in the following way:
   //! Handle(Geom_Curve) mycurve = ... ;
   //! GeomAdaptor_Curve C(mycurve);
   //! The bounding box B is then enlarged by adding it:
   //! Bnd_Box B;
   //! // ...
   //! Standard_Real Tol = ... ;
   //! Add3dCurve::Add ( C, Tol, B );
   //! Exceptions
   //! Standard_Failure if the curve is built from:
   //! -   a Geom_Line, or
   //! -   a Geom_Parabola, or
   //! -   a Geom_Hyperbola,
   //! and P1 and P2 are either two negative infinite real
   //! numbers, or two positive infinite real numbers.
   Standard_EXPORT static void Add (const Adaptor3d_Curve& C, const Standard_Real U1, const Standard_Real U2, const Standard_Real Tol, Bnd_Box& B);
 
   //! Adds to the bounding box B the curve C
   //! These methods use more precise algorithms for building bnd box
   //! then methods Add(...)
   Standard_EXPORT static void AddOptimal (const Adaptor3d_Curve& C, const Standard_Real Tol, Bnd_Box& B);
   Standard_EXPORT static void AddOptimal (const Adaptor3d_Curve& C, 
                                           const Standard_Real U1, const Standard_Real U2, 
                                           const Standard_Real Tol, Bnd_Box& B);
   //! Adds to the bounding box B the curve C
   //! using numerical minimization algorithms
   //! This method is used in AddOptimal for not analytical curves.
   //! if Tol < Precision::Confusion(), Precision:;Confusion is used as computation tolerance
   Standard_EXPORT static void AddGenCurv(const Adaptor3d_Curve& C, 
                                          const Standard_Real UMin,
                                          const Standard_Real UMax,
                                          const Standard_Real Tol,
                                          Bnd_Box& B);
 
 protected:
 
 
 
 
 
 private:
 
 
 
 
 
 };
 
 
 
 
 
 
 
 #endif // _BndLib_Add3dCurve_HeaderFile

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