1 // Created on: 1993-04-23
2 // Created by: Modelistation
3 // Copyright (c) 1993-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _HLRBRep_SLPropsATool_HeaderFile
18 #define _HLRBRep_SLPropsATool_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <Standard_Address.hxx>
25 #include <Standard_Real.hxx>
26 #include <Standard_Integer.hxx>
32 class HLRBRep_SLPropsATool
39 //! Computes the point <P> of parameter <U> and <V>
40 //! on the Surface <A>.
41 static void Value (const Standard_Address A, const Standard_Real U, const Standard_Real V, gp_Pnt& P);
43 //! Computes the point <P> and first derivative <D1*>
44 //! of parameter <U> and <V> on the Surface <A>.
45 static void D1 (const Standard_Address A, const Standard_Real U, const Standard_Real V, gp_Pnt& P, gp_Vec& D1U, gp_Vec& D1V);
47 //! Computes the point <P>, the first derivative <D1*>
48 //! and second derivative <D2*> of parameter <U> and
49 //! <V> on the Surface <A>.
50 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);
52 static gp_Vec DN (const Standard_Address A, const Standard_Real U, const Standard_Real V, const Standard_Integer Nu, const Standard_Integer Nv);
54 //! returns the order of continuity of the Surface
55 //! <A>. returns 1 : first derivative only is
56 //! computable returns 2 : first and second derivative
57 //! only are computable.
58 static Standard_Integer Continuity (const Standard_Address A);
60 //! returns the bounds of the Surface.
61 static void Bounds (const Standard_Address A, Standard_Real& U1, Standard_Real& V1, Standard_Real& U2, Standard_Real& V2);
81 #include <HLRBRep_SLPropsATool.lxx>
87 #endif // _HLRBRep_SLPropsATool_HeaderFile