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