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 <Standard_Real.hxx>
0025 class gp_Pnt;
0026 class gp_Vec;
0027
0028
0029
0030 class HLRBRep_SLPropsATool
0031 {
0032 public:
0033
0034   DEFINE_STANDARD_ALLOC
0035
0036
0037   //! Computes the point  <P> of    parameter <U> and <V>
0038   //! on the Surface <A>.
0039     static void Value (const Standard_Address A, const Standard_Real U, const Standard_Real V, gp_Pnt& P);
0040
0041   //! Computes the point <P>  and first derivative <D1*>
0042   //! of parameter <U> and <V> on the Surface <A>.
0043     static void D1 (const Standard_Address A, 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*>
0046   //! and second  derivative <D2*> of parameter  <U> and
0047   //! <V> on the Surface <A>.
0048     static void D2 (const Standard_Address A, 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     static gp_Vec DN (const Standard_Address A, const Standard_Real U, const Standard_Real V, const Standard_Integer Nu, const Standard_Integer Nv);
0051
0052   //! returns the order of   continuity of the   Surface
0053   //! <A>.  returns  1   :  first  derivative    only is
0054   //! computable returns 2 : first and second derivative
0055   //! only are computable.
0056     static Standard_Integer Continuity (const Standard_Address A);
0057
0058   //! returns the bounds of the Surface.
0059     static void Bounds (const Standard_Address A, Standard_Real& U1, Standard_Real& V1, Standard_Real& U2, Standard_Real& V2);
0060
0061
0062
0063
0064 protected:
0065
0066
0067
0068
0069
0070 private:
0071
0072
0073
0074
0075
0076 };
0077
0078
0079 #include <HLRBRep_SLPropsATool.lxx>
0080
0081
0082
0083
0084
0085 #endif // _HLRBRep_SLPropsATool_HeaderFile