include/opencascade/GeomLProp.hxx

0001 // Created on: 1992-03-26
0002 // Created by: Herve LEGRAND
0003 // Copyright (c) 1992-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _GeomLProp_HeaderFile
0018 #define _GeomLProp_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <GeomAbs_Shape.hxx>
0025 class Geom_Curve;
0026
0027 //! These global functions compute the degree of
0028 //! continuity of a 3D curve built by concatenation of two
0029 //! other curves (or portions of curves) at their junction point.
0030 class GeomLProp
0031 {
0032 public:
0033   DEFINE_STANDARD_ALLOC
0034
0035   //! Computes the regularity at the junction between C1 and
0036   //! C2. The booleans r1 and r2 are true if the curves must
0037   //! be taken reversed.  The point u1 on C1 and the point
0038   //! u2 on C2 must be confused.
0039   //! tl and ta are the linear and angular tolerance used two
0040   //! compare the derivative.
0041   Standard_EXPORT static GeomAbs_Shape Continuity(const Handle(Geom_Curve)& C1,
0042                                                   const Handle(Geom_Curve)& C2,
0043                                                   const Standard_Real       u1,
0044                                                   const Standard_Real       u2,
0045                                                   const Standard_Boolean    r1,
0046                                                   const Standard_Boolean    r2,
0047                                                   const Standard_Real       tl,
0048                                                   const Standard_Real       ta);
0049
0050   //! The  same  as  preceding   but   using  the   standard
0051   //! tolerances from package Precision.
0052   Standard_EXPORT static GeomAbs_Shape Continuity(const Handle(Geom_Curve)& C1,
0053                                                   const Handle(Geom_Curve)& C2,
0054                                                   const Standard_Real       u1,
0055                                                   const Standard_Real       u2,
0056                                                   const Standard_Boolean    r1,
0057                                                   const Standard_Boolean    r2);
0058 };
0059
0060 #endif // _GeomLProp_HeaderFile