include/opencascade/GeomLProp_SurfaceTool.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_SurfaceTool_HeaderFile
0018 #define _GeomLProp_SurfaceTool_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <Standard_Integer.hxx>
0025 class Geom_Surface;
0026 class gp_Pnt;
0027 class gp_Vec;
0028
0029 class GeomLProp_SurfaceTool
0030 {
0031 public:
0032   DEFINE_STANDARD_ALLOC
0033
0034   //! Computes the point <P> of parameter <U> and <V> on the
0035   //! Surface <S>.
0036   Standard_EXPORT static void Value(const Handle(Geom_Surface)& S,
0037                                     const Standard_Real         U,
0038                                     const Standard_Real         V,
0039                                     gp_Pnt&                     P);
0040
0041   //! Computes the point <P> and first derivative <D1*> of
0042   //! parameter <U> and <V> on the Surface <S>.
0043   Standard_EXPORT static void D1(const Handle(Geom_Surface)& S,
0044                                  const Standard_Real         U,
0045                                  const Standard_Real         V,
0046                                  gp_Pnt&                     P,
0047                                  gp_Vec&                     D1U,
0048                                  gp_Vec&                     D1V);
0049
0050   //! Computes the point <P>, the first derivative <D1*> and second
0051   //! derivative <D2*> of parameter <U> and <V> on the Surface <S>.
0052   Standard_EXPORT static void D2(const Handle(Geom_Surface)& S,
0053                                  const Standard_Real         U,
0054                                  const Standard_Real         V,
0055                                  gp_Pnt&                     P,
0056                                  gp_Vec&                     D1U,
0057                                  gp_Vec&                     D1V,
0058                                  gp_Vec&                     D2U,
0059                                  gp_Vec&                     D2V,
0060                                  gp_Vec&                     DUV);
0061
0062   Standard_EXPORT static gp_Vec DN(const Handle(Geom_Surface)& S,
0063                                    const Standard_Real         U,
0064                                    const Standard_Real         V,
0065                                    const Standard_Integer      IU,
0066                                    const Standard_Integer      IV);
0067
0068   //! returns the order of continuity of the Surface <S>.
0069   //! returns 1 : first derivative only is computable
0070   //! returns 2 : first and second derivative only are computable.
0071   Standard_EXPORT static Standard_Integer Continuity(const Handle(Geom_Surface)& S);
0072
0073   //! returns the bounds of the Surface.
0074   Standard_EXPORT static void Bounds(const Handle(Geom_Surface)& S,
0075                                      Standard_Real&              U1,
0076                                      Standard_Real&              V1,
0077                                      Standard_Real&              U2,
0078                                      Standard_Real&              V2);
0079
0080 protected:
0081 private:
0082 };
0083
0084 #endif // _GeomLProp_SurfaceTool_HeaderFile