include/opencascade/HLRBRep_SLPropsATool.hxx

0001 // Created on: 1993-04-23
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_SLPropsATool_HeaderFile
0018 #define _HLRBRep_SLPropsATool_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <HLRBRep_TypeDef.hxx>
0025 #include <Standard_Real.hxx>
0026 class gp_Pnt;
0027 class gp_Vec;
0028
0029 class HLRBRep_SLPropsATool
0030 {
0031 public:
0032   DEFINE_STANDARD_ALLOC
0033
0034   //! Computes the point <P> of parameter <U> and <V>
0035   //! on the Surface <A>.
0036   static void Value(const HLRBRep_SurfacePtr A, const double U, const double V, gp_Pnt& P);
0037
0038   //! Computes the point <P> and first derivative <D1*>
0039   //! of parameter <U> and <V> on the Surface <A>.
0040   static void D1(const HLRBRep_SurfacePtr A,
0041                  const double             U,
0042                  const double             V,
0043                  gp_Pnt&                  P,
0044                  gp_Vec&                  D1U,
0045                  gp_Vec&                  D1V);
0046
0047   //! Computes the point <P>, the first derivative <D1*>
0048   //! and second derivative <D2*> of parameter <U> and
0049   //! <V> on the Surface <A>.
0050   static void D2(const HLRBRep_SurfacePtr A,
0051                  const double             U,
0052                  const double             V,
0053                  gp_Pnt&                  P,
0054                  gp_Vec&                  D1U,
0055                  gp_Vec&                  D1V,
0056                  gp_Vec&                  D2U,
0057                  gp_Vec&                  D2V,
0058                  gp_Vec&                  DUV);
0059
0060   static gp_Vec DN(const HLRBRep_SurfacePtr A,
0061                    const double             U,
0062                    const double             V,
0063                    const int                Nu,
0064                    const int                Nv);
0065
0066   //! returns the order of continuity of the Surface <A>.
0067   //! returns 1 : first derivative only is computable
0068   //! returns 2 : first and second derivative only are
0069   //! computable.
0070   static int Continuity(const HLRBRep_SurfacePtr A);
0071
0072   //! returns the bounds of the Surface.
0073   static void Bounds(const HLRBRep_SurfacePtr A, double& U1, double& V1, double& U2, double& V2);
0074 };
0075
0076 #include <HLRBRep_SLPropsATool.lxx>
0077
0078 #endif // _HLRBRep_SLPropsATool_HeaderFile