OCCT

// Created on: 1994-02-24
// Created by: Laurent BOURESCHE
// Copyright (c) 1994-1999 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 _BRepLProp_HeaderFile
#define _BRepLProp_HeaderFile

#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Handle.hxx>

#include <GeomAbs_Shape.hxx>
#include <Standard_Real.hxx>
class BRepAdaptor_Curve;

//! These global functions compute the degree of
//! continuity of a curve built by concatenation of two
//! edges at their junction point.
class BRepLProp
{
public:
  DEFINE_STANDARD_ALLOC

  //! Computes the regularity at the junction between C1 and
  //! C2. The point u1 on C1 and the point u2 on  C2 must be
  //! confused.   tl  and ta  are  the  linear  and  angular
  //! tolerance used two compare the derivative.
  Standard_EXPORT static GeomAbs_Shape Continuity(const BRepAdaptor_Curve& C1,
                                                  const BRepAdaptor_Curve& C2,
                                                  const Standard_Real      u1,
                                                  const Standard_Real      u2,
                                                  const Standard_Real      tl,
                                                  const Standard_Real      ta);

  //! The same as preceding but using the standard tolerances from package Precision.
  Standard_EXPORT static GeomAbs_Shape Continuity(const BRepAdaptor_Curve& C1,
                                                  const BRepAdaptor_Curve& C2,
                                                  const Standard_Real      u1,
                                                  const Standard_Real      u2);
};

#endif // _BRepLProp_HeaderFile