// Created on: 1995-03-09
// Created by: Laurent PAINNOT
// 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 _BRep_GCurve_HeaderFile
#define _BRep_GCurve_HeaderFile

#include <Standard.hxx>
#include <Standard_Type.hxx>

#include <Standard_Real.hxx>
#include <BRep_CurveRepresentation.hxx>
class TopLoc_Location;
class gp_Pnt;


class BRep_GCurve;
DEFINE_STANDARD_HANDLE(BRep_GCurve, BRep_CurveRepresentation)

//! Root   class    for    the    geometric     curves
//! representation. Contains a range.
//! Contains a first and a last parameter.
class BRep_GCurve : public BRep_CurveRepresentation
{

public:

  
    void SetRange (const Standard_Real First, const Standard_Real Last);
  
    void Range (Standard_Real& First, Standard_Real& Last) const;
  
    Standard_Real First() const;
  
    Standard_Real Last() const;
  
    void First (const Standard_Real F);
  
    void Last (const Standard_Real L);
  
  //! Computes the point at parameter U.
  Standard_EXPORT virtual void D0 (const Standard_Real U, gp_Pnt& P) const = 0;
  
  //! Recomputes any derived data after a modification.
  //! This is called when the range is modified.
  Standard_EXPORT virtual void Update();




  DEFINE_STANDARD_RTTIEXT(BRep_GCurve,BRep_CurveRepresentation)

protected:

  
  Standard_EXPORT BRep_GCurve(const TopLoc_Location& L, const Standard_Real First, const Standard_Real Last);



private:


  Standard_Real myFirst;
  Standard_Real myLast;


};


#include <BRep_GCurve.lxx>





#endif // _BRep_GCurve_HeaderFile
