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
0029 //! used to store the "gradient of gradient"
0030 class BlendFunc_Tensor
0031 {
0032 public:
0033
0034   DEFINE_STANDARD_ALLOC
0035
0036
0037   Standard_EXPORT BlendFunc_Tensor(const Standard_Integer NbRow, const Standard_Integer NbCol, const Standard_Integer NbMat);
0038
0039   //! Initialize all the elements of a Tensor to InitialValue.
0040   Standard_EXPORT void Init (const Standard_Real InitialValue);
0041
0042   //! accesses (in read or write mode) the value of index <Row>,
0043   //! <Col> and <Mat> of a Tensor.
0044   //! An exception is raised if <Row>, <Col> or <Mat> are not
0045   //! in the correct range.
0046     const Standard_Real& Value (const Standard_Integer Row, const Standard_Integer Col, const Standard_Integer Mat) const;
0047   const Standard_Real& operator() (const Standard_Integer Row, const Standard_Integer Col, const Standard_Integer Mat) const
0048 {
0049   return Value(Row,Col,Mat);
0050 }
0051
0052   //! accesses (in read or write mode) the value of index <Row>,
0053   //! <Col> and <Mat> of a Tensor.
0054   //! An exception is raised if <Row>, <Col> or <Mat> are not
0055   //! in the correct range.
0056     Standard_Real& ChangeValue (const Standard_Integer Row, const Standard_Integer Col, const Standard_Integer Mat);
0057   Standard_Real& operator() (const Standard_Integer Row, const Standard_Integer Col, const Standard_Integer Mat)
0058 {
0059   return ChangeValue(Row,Col,Mat);
0060 }
0061
0062   Standard_EXPORT void Multiply (const math_Vector& Right, math_Matrix& Product) const;
0063
0064
0065
0066
0067 protected:
0068
0069
0070
0071
0072
0073 private:
0074
0075
0076
0077   TColStd_Array1OfReal Tab;
0078   Standard_Integer nbrow;
0079   Standard_Integer nbcol;
0080   Standard_Integer nbmat;
0081   Standard_Integer nbmtcl;
0082
0083
0084 };
0085
0086
0087 #include <BlendFunc_Tensor.lxx>
0088
0089
0090
0091
0092
0093 #endif // _BlendFunc_Tensor_HeaderFile