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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkArray2D_h
#define itkArray2D_h
#include "itkMacro.h"
#include "itkIntTypes.h"
#include "vnl/vnl_matrix.h"
namespace itk
{
/** \class Array2D
* \brief Array2D class representing a 2D array with size defined
* at construction time.
*
* This class derives from the vnl_matrix<> class.
* Its size is assigned at construction time (run time) and can not be
* changed afterwards.
*
* The class is templated over the type of the elements.
*
* Template parameters for class Array2D:
*
* - TValue = Element type stored at each location in the array.
*
* \ingroup DataRepresentation
* \ingroup ITKCommon
*/
template< typename TValue >
class ITK_TEMPLATE_EXPORT Array2D: public vnl_matrix< TValue >
{
public:
/** The element type stored at each location in the Array2D. */
typedef TValue ValueType;
typedef Array2D Self;
typedef vnl_matrix< TValue > VnlMatrixType;
Array2D();
Array2D(unsigned int rows, unsigned int cols);
Array2D(const Self & array);
Array2D(const VnlMatrixType & matrix);
const Self & operator=(const Self & array);
const Self & operator=(const VnlMatrixType & matrix);
void Fill(TValue const & v) { this->fill(v); }
/** Get one element */
const TValue & GetElement(SizeValueType row, SizeValueType col) const
{
return this->operator()(static_cast<unsigned int>(row), static_cast<unsigned int>(col));
}
/** Set one element */
void SetElement(SizeValueType row, SizeValueType col, const TValue & value)
{
this->operator()(static_cast<unsigned int>(row), static_cast<unsigned int>(col)) = value;
}
/** Destructively set the size to that given. Will lose data. */
void SetSize(unsigned int m, unsigned int n);
/** This destructor is not virtual for performance reasons. However, this
* means that subclasses cannot allocate memory. */
~Array2D() {}
};
template< typename TValue >
std::ostream & operator<<(std::ostream & os, const Array2D< TValue > & arr)
{
const unsigned int numberOfRows = arr.rows();
const unsigned int numberOfColumns = arr.cols();
for ( unsigned int r = 0; r < numberOfRows; ++r )
{
os << "[";
if ( numberOfColumns >= 1 )
{
const unsigned int lastColumn = numberOfColumns - 1;
for ( unsigned int c = 0; c < lastColumn; ++c )
{
os << arr(r, c) << ", ";
}
os << arr(r, lastColumn);
}
os << "]" << std::endl;
}
return os;
}
// declaration of specialization
template<> ITKCommon_EXPORT std::ostream & operator<<(std::ostream & os, const Array2D< float > & arr);
template<> ITKCommon_EXPORT std::ostream & operator<<(std::ostream & os, const Array2D< double > & arr);
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkArray2D.hxx"
#endif
#endif
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