1 // Copyright (C) 2007-2023 CEA, EDF, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License, or (at your option) any later version.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 #ifndef MED_SliceArray_HeaderFile
24 #define MED_SliceArray_HeaderFile
26 #ifdef WIN32 // for correct compiling of "valarray" in modules, which include this file
34 # define MED_TCSLICE_CHECK_RANGE
38 //---------------------------------------------------------------
39 //! This class intends to provide a uniform way to handle multidimensional data (const version)
41 It just contains a pointer to real sequence and implement proper calculation of its indexes.
42 This class deals with constant pointer to the sources data and provides const method to
45 template<class TValueType>
48 const TValueType* myCValuePtr; //!< Reference to source multidimensional data
49 size_t mySourceSize; //!< Size of the source multidimensional data
50 std::slice mySlice; //!< Defines algorithm of index calculation
54 check_id(size_t theId) const
57 if(theId < mySlice.size()){
58 anId = mySlice.start() + theId*mySlice.stride();
59 if(anId < (long int)mySourceSize)
62 throw std::out_of_range("TCSlice::check_id");
65 //! Calculate internal index to get proper element from the source multidimensional data
67 calculate_id(size_t theId) const
69 return mySlice.start() + theId*mySlice.stride();
73 get_id(size_t theId) const
75 #ifdef MED_TCSLICE_CHECK_RANGE
78 return calculate_id(theId);
82 get_id_at(size_t theId) const
85 return calculate_id(theId);
89 typedef TValueType value_type;
91 //! Construct the class from bare pointer
92 TCSlice(const value_type* theValuePtr,
94 const std::slice& theSlice):
95 myCValuePtr(theValuePtr),
96 mySourceSize(theSourceSize),
100 //! Construct the class from corresponding container
101 TCSlice(const TVector<value_type>& theContainer,
102 const std::slice& theSlice):
103 myCValuePtr(&theContainer[0]),
104 mySourceSize(theContainer.size()),
108 //! Default constructor (dangerous)
113 //! Get element by its number (const version)
115 operator[](size_t theId) const
117 return *(myCValuePtr + get_id(theId));
121 at(size_t theId) const
123 return *(myCValuePtr + get_id_at(theId));
126 //! Get range of the order numbers
130 return mySlice.size();
134 //---------------------------------------------------------------
135 //! This class extends TCSlice functionality for non-constant case
136 template<class TValueType>
137 class TSlice: public TCSlice<TValueType>
139 TValueType* myValuePtr;
142 typedef TValueType value_type;
143 typedef TCSlice<TValueType> TSupperClass;
145 //! Construct the class from bare pointer
146 TSlice(value_type* theValuePtr,
147 size_t theSourceSize,
148 const std::slice& theSlice):
149 TSupperClass(theValuePtr, theSourceSize, theSlice),
150 myValuePtr(theValuePtr)
153 //! Construct the class from corresponding container
154 TSlice(TVector<value_type>& theContainer,
155 const std::slice& theSlice):
156 TSupperClass(theContainer, theSlice),
157 myValuePtr(&theContainer[0])
160 //! Default constructor (dangerous)
165 //! Get element by its number
167 operator[](size_t theId)
169 return *(myValuePtr + this->get_id(theId));
175 return *(myValuePtr + this->get_id_at(theId));
180 #undef MED_TCSLICE_CHECK_RANGE
182 #endif // MED_SliceArray_HeaderFile