include/opencascade/GeomFill_TgtField.hxx

0001 // Created on: 1995-12-04
0002 // Created by: Laurent BOURESCHE
0003 // Copyright (c) 1995-1999 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 _GeomFill_TgtField_HeaderFile
0018 #define _GeomFill_TgtField_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_Type.hxx>
0022
0023 #include <Standard_Transient.hxx>
0024 #include <Standard_Real.hxx>
0025 class Law_BSpline;
0026 class gp_Vec;
0027
0028
0029 class GeomFill_TgtField;
0030 DEFINE_STANDARD_HANDLE(GeomFill_TgtField, Standard_Transient)
0031
0032 //! Root class defining the methods we need to make an
0033 //! algorithmic tangents field.
0034 class GeomFill_TgtField : public Standard_Transient
0035 {
0036
0037 public:
0038
0039
0040   Standard_EXPORT virtual Standard_Boolean IsScalable() const;
0041
0042   Standard_EXPORT virtual void Scale (const Handle(Law_BSpline)& Func);
0043
0044   //! Computes  the value  of the    field of tangency    at
0045   //! parameter W.
0046   Standard_EXPORT virtual gp_Vec Value (const Standard_Real W) const = 0;
0047
0048   //! Computes the  derivative of  the field of  tangency at
0049   //! parameter W.
0050   Standard_EXPORT virtual gp_Vec D1 (const Standard_Real W) const = 0;
0051
0052   //! Computes the value and the  derivative of the field of
0053   //! tangency at parameter W.
0054   Standard_EXPORT virtual void D1 (const Standard_Real W, gp_Vec& V, gp_Vec& DV) const = 0;
0055
0056
0057
0058
0059   DEFINE_STANDARD_RTTIEXT(GeomFill_TgtField,Standard_Transient)
0060
0061 protected:
0062
0063
0064
0065
0066 private:
0067
0068
0069
0070
0071 };
0072
0073
0074
0075
0076
0077
0078
0079 #endif // _GeomFill_TgtField_HeaderFile