include/opencascade/HLRBRep_CLPropsATool.hxx

0001 // Created on: 1993-04-20
0002 // Created by: Modelistation
0003 // Copyright (c) 1993-1999 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 _HLRBRep_CLPropsATool_HeaderFile
0018 #define _HLRBRep_CLPropsATool_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <Standard_Real.hxx>
0025 class HLRBRep_Curve;
0026 class gp_Pnt2d;
0027 class gp_Vec2d;
0028
0029 class HLRBRep_CLPropsATool
0030 {
0031 public:
0032   DEFINE_STANDARD_ALLOC
0033
0034   //! Computes the point <P> of parameter <U> on the
0035   //! Curve from HLRBRep <C>.
0036   static void Value(const HLRBRep_Curve* A, const double U, gp_Pnt2d& P);
0037
0038   //! Computes the point <P> and first derivative <V1>
0039   //! of parameter <U> on the curve <C>.
0040   static void D1(const HLRBRep_Curve* A, const double U, gp_Pnt2d& P, gp_Vec2d& V1);
0041
0042   //! Computes the point <P>, the first derivative <V1>
0043   //! and second derivative <V2> of parameter <U> on the
0044   //! curve <C>.
0045   static void D2(const HLRBRep_Curve* A, const double U, gp_Pnt2d& P, gp_Vec2d& V1, gp_Vec2d& V2);
0046
0047   //! Computes the point <P>, the first derivative <V1>,
0048   //! the second derivative <V2> and third derivative
0049   //! <V3> of parameter <U> on the curve <C>.
0050   static void D3(const HLRBRep_Curve* A,
0051                  const double         U,
0052                  gp_Pnt2d&            P,
0053                  gp_Vec2d&            V1,
0054                  gp_Vec2d&            V2,
0055                  gp_Vec2d&            V3);
0056
0057   //! returns the order of continuity of the curve <C>.
0058   //! returns 1: first derivative only is computable.
0059   //! returns 2: first and second derivative only are computable.
0060   //! returns 3: first, second and third are computable.
0061   static int Continuity(const HLRBRep_Curve* A);
0062
0063   //! returns the first parameter bound of the curve.
0064   static double FirstParameter(const HLRBRep_Curve* A);
0065
0066   //! returns the last parameter bound of the curve.
0067   //! FirstParameter must be less than LastParamenter.
0068   static double LastParameter(const HLRBRep_Curve* A);
0069 };
0070
0071 #include <HLRBRep_CLPropsATool.lxx>
0072
0073 #endif // _HLRBRep_CLPropsATool_HeaderFile