include/opencascade/BRepLProp_SurfaceTool.hxx

0001 // Created on: 1994-02-24
0002 // Created by: Laurent BOURESCHE
0003 // Copyright (c) 1994-1999 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 _BRepLProp_SurfaceTool_HeaderFile
0018 #define _BRepLProp_SurfaceTool_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022
0023 #include <Standard_Integer.hxx>
0024 class BRepAdaptor_Surface;
0025 class gp_Pnt;
0026 class gp_Vec;
0027
0028
0029
0030 class BRepLProp_SurfaceTool
0031 {
0032 public:
0033
0034   DEFINE_STANDARD_ALLOC
0035
0036
0037   //! Computes the point <P> of parameter <U> and <V> on the
0038   //! Surface <S>.
0039   Standard_EXPORT static void Value (const BRepAdaptor_Surface& S, const Standard_Real U, const Standard_Real V, 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 BRepAdaptor_Surface& S, const Standard_Real U, const Standard_Real V, gp_Pnt& P, gp_Vec& D1U, gp_Vec& D1V);
0044
0045   //! Computes the point <P>, the first derivative <D1*> and second
0046   //! derivative <D2*> of parameter <U> and <V> on the Surface <S>.
0047   Standard_EXPORT static void D2 (const BRepAdaptor_Surface& S, const Standard_Real U, const Standard_Real V, gp_Pnt& P, gp_Vec& D1U, gp_Vec& D1V, gp_Vec& D2U, gp_Vec& D2V, gp_Vec& DUV);
0048
0049   Standard_EXPORT static gp_Vec DN (const BRepAdaptor_Surface& S, const Standard_Real U, const Standard_Real V, const Standard_Integer IU, const Standard_Integer IV);
0050
0051   //! returns the order of continuity of the Surface <S>.
0052   //! returns 1 : first derivative only is computable
0053   //! returns 2 : first and second derivative only are computable.
0054   Standard_EXPORT static Standard_Integer Continuity (const BRepAdaptor_Surface& S);
0055
0056   //! returns the bounds of the Surface.
0057   Standard_EXPORT static void Bounds (const BRepAdaptor_Surface& S, Standard_Real& U1, Standard_Real& V1, Standard_Real& U2, Standard_Real& V2);
0058
0059
0060
0061
0062 protected:
0063
0064
0065
0066
0067
0068 private:
0069
0070
0071
0072
0073
0074 };
0075
0076
0077
0078
0079
0080
0081
0082 #endif // _BRepLProp_SurfaceTool_HeaderFile