include/opencascade/LProp3d_CurveTool.hxx

0001 // Created on: 2002-08-02
0002 // Created by: Alexander KARTOMIN  (akm)
0003 // Copyright (c) 2002-2014 OPEN CASCADE SAS
0004 //
0005 // This file is part of Open CASCADE Technology software library.
0006 //
0007 // This library is free software; you can redistribute it and/or modify it under
0008 // the terms of the GNU Lesser General Public License version 2.1 as published
0009 // by the Free Software Foundation, with special exception defined in the file
0010 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0011 // distribution for complete text of the license and disclaimer of any warranty.
0012 //
0013 // Alternatively, this file may be used under the terms of Open CASCADE
0014 // commercial license or contractual agreement.
0015
0016 #ifndef _LProp3d_CurveTool_HeaderFile
0017 #define _LProp3d_CurveTool_HeaderFile
0018
0019 #include <Standard.hxx>
0020 #include <Standard_DefineAlloc.hxx>
0021 #include <Standard_Handle.hxx>
0022
0023 #include <Standard_Real.hxx>
0024 #include <Standard_Integer.hxx>
0025
0026 class gp_Pnt;
0027 class gp_Vec;
0028
0029 class LProp3d_CurveTool
0030 {
0031 public:
0032   DEFINE_STANDARD_ALLOC
0033
0034   //! Computes the point <P> of parameter <U> on the HCurve <C>.
0035   Standard_EXPORT static void Value(const Handle(Adaptor3d_Curve)& C,
0036                                     const Standard_Real            U,
0037                                     gp_Pnt&                        P);
0038
0039   //! Computes the point <P> and first derivative <V1> of
0040   //! parameter <U> on the HCurve <C>.
0041   Standard_EXPORT static void D1(const Handle(Adaptor3d_Curve)& C,
0042                                  const Standard_Real            U,
0043                                  gp_Pnt&                        P,
0044                                  gp_Vec&                        V1);
0045
0046   //! Computes the point <P>, the first derivative <V1> and second
0047   //! derivative <V2> of parameter <U> on the HCurve <C>.
0048   Standard_EXPORT static void D2(const Handle(Adaptor3d_Curve)& C,
0049                                  const Standard_Real            U,
0050                                  gp_Pnt&                        P,
0051                                  gp_Vec&                        V1,
0052                                  gp_Vec&                        V2);
0053
0054   //! Computes the point <P>, the first derivative <V1>, the
0055   //! second derivative <V2> and third derivative <V3> of
0056   //! parameter <U> on the HCurve <C>.
0057   Standard_EXPORT static void D3(const Handle(Adaptor3d_Curve)& C,
0058                                  const Standard_Real            U,
0059                                  gp_Pnt&                        P,
0060                                  gp_Vec&                        V1,
0061                                  gp_Vec&                        V2,
0062                                  gp_Vec&                        V3);
0063
0064   //! returns the order of continuity of the HCurve <C>.
0065   //! returns 1 : first derivative only is computable
0066   //! returns 2 : first and second derivative only are computable.
0067   //! returns 3 : first, second and third are computable.
0068   Standard_EXPORT static Standard_Integer Continuity(const Handle(Adaptor3d_Curve)& C);
0069
0070   //! returns the first parameter bound of the HCurve.
0071   Standard_EXPORT static Standard_Real FirstParameter(const Handle(Adaptor3d_Curve)& C);
0072
0073   //! returns the last parameter bound of the HCurve.
0074   //! FirstParameter must be less than LastParamenter.
0075   Standard_EXPORT static Standard_Real LastParameter(const Handle(Adaptor3d_Curve)& C);
0076
0077 protected:
0078 private:
0079 };
0080
0081 #endif // _LProp3d_CurveTool_HeaderFile