include/opencascade/BlendFunc_Tensor.hxx

0001 // Created on: 1996-12-05
0002 // Created by: Philippe MANGIN
0003 // Copyright (c) 1996-1999 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 _BlendFunc_Tensor_HeaderFile
0018 #define _BlendFunc_Tensor_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <TColStd_Array1OfReal.hxx>
0025 #include <math_Vector.hxx>
0026 class math_Matrix;
0027
0028 //! used to store the "gradient of gradient"
0029 class BlendFunc_Tensor
0030 {
0031 public:
0032   DEFINE_STANDARD_ALLOC
0033
0034   Standard_EXPORT BlendFunc_Tensor(const Standard_Integer NbRow,
0035                                    const Standard_Integer NbCol,
0036                                    const Standard_Integer NbMat);
0037
0038   //! Initialize all the elements of a Tensor to InitialValue.
0039   Standard_EXPORT void Init(const Standard_Real InitialValue);
0040
0041   //! accesses (in read or write mode) the value of index <Row>,
0042   //! <Col> and <Mat> of a Tensor.
0043   //! An exception is raised if <Row>, <Col> or <Mat> are not
0044   //! in the correct range.
0045   const Standard_Real& Value(const Standard_Integer Row,
0046                              const Standard_Integer Col,
0047                              const Standard_Integer Mat) const;
0048
0049   const Standard_Real& operator()(const Standard_Integer Row,
0050                                   const Standard_Integer Col,
0051                                   const Standard_Integer Mat) const
0052   {
0053     return Value(Row, Col, Mat);
0054   }
0055
0056   //! accesses (in read or write mode) the value of index <Row>,
0057   //! <Col> and <Mat> of a Tensor.
0058   //! An exception is raised if <Row>, <Col> or <Mat> are not
0059   //! in the correct range.
0060   Standard_Real& ChangeValue(const Standard_Integer Row,
0061                              const Standard_Integer Col,
0062                              const Standard_Integer Mat);
0063
0064   Standard_Real& operator()(const Standard_Integer Row,
0065                             const Standard_Integer Col,
0066                             const Standard_Integer Mat)
0067   {
0068     return ChangeValue(Row, Col, Mat);
0069   }
0070
0071   Standard_EXPORT void Multiply(const math_Vector& Right, math_Matrix& Product) const;
0072
0073 protected:
0074 private:
0075   TColStd_Array1OfReal Tab;
0076   Standard_Integer     nbrow;
0077   Standard_Integer     nbcol;
0078   Standard_Integer     nbmat;
0079   Standard_Integer     nbmtcl;
0080 };
0081
0082 #include <BlendFunc_Tensor.lxx>
0083
0084 #endif // _BlendFunc_Tensor_HeaderFile