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/*=========================================================================
Program: Visualization Toolkit
Module: vtkTransposeMatrix.cxx
-------------------------------------------------------------------------
Copyright 2008 Sandia Corporation.
Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkCommand.h"
#include "vtkDenseArray.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkSmartPointer.h"
#include "vtkSparseArray.h"
#include "vtkTransposeMatrix.h"
///////////////////////////////////////////////////////////////////////////////
// vtkTransposeMatrix
vtkStandardNewMacro(vtkTransposeMatrix);
vtkTransposeMatrix::vtkTransposeMatrix()
{
}
vtkTransposeMatrix::~vtkTransposeMatrix()
{
}
void vtkTransposeMatrix::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
int vtkTransposeMatrix::RequestData(
vtkInformation*,
vtkInformationVector** inputVector,
vtkInformationVector* outputVector)
{
vtkArrayData* const input = vtkArrayData::GetData(inputVector[0]);
if(input->GetNumberOfArrays() != 1)
{
vtkErrorMacro(<< "vtkTransposeMatrix requires vtkArrayData containing exactly one array as input.");
return 0;
}
if(vtkSparseArray<double>* const input_array = vtkSparseArray<double>::SafeDownCast(
input->GetArray(static_cast<vtkIdType>(0))))
{
if(input_array->GetDimensions() != 2)
{
vtkErrorMacro(<< "vtkTransposeMatrix requires a matrix as input.");
return 0;
}
const vtkArrayExtents input_extents = input_array->GetExtents();
vtkSparseArray<double>* const output_array = vtkSparseArray<double>::New();
output_array->Resize(vtkArrayExtents(input_extents[1], input_extents[0]));
output_array->SetDimensionLabel(0, input_array->GetDimensionLabel(1));
output_array->SetDimensionLabel(1, input_array->GetDimensionLabel(0));
vtkArrayCoordinates coordinates;
const vtkIdType element_count = input_array->GetNonNullSize();
for(vtkIdType n = 0; n != element_count; ++n)
{
input_array->GetCoordinatesN(n, coordinates);
output_array->AddValue(vtkArrayCoordinates(coordinates[1], coordinates[0]), input_array->GetValueN(n));
}
vtkArrayData* const output = vtkArrayData::GetData(outputVector);
output->ClearArrays();
output->AddArray(output_array);
output_array->Delete();
}
else
{
vtkDenseArray<double>* const input_array2=vtkDenseArray<double>::SafeDownCast(
input->GetArray(static_cast<vtkIdType>(0)));
if(input_array2!=0)
{
if(input_array2->GetDimensions() != 2)
{
vtkErrorMacro(<< "vtkTransposeMatrix requires a matrix as input.");
return 0;
}
const vtkArrayExtents input_extents = input_array2->GetExtents();
vtkDenseArray<double>* const output_array = vtkDenseArray<double>::New();
output_array->Resize(vtkArrayExtents(input_extents[1],input_extents[0]));
output_array->SetDimensionLabel(0, input_array2->GetDimensionLabel(1));
output_array->SetDimensionLabel(1, input_array2->GetDimensionLabel(0));
for(vtkIdType i = input_extents[0].GetBegin(); i != input_extents[0].GetEnd(); ++i)
{
for(vtkIdType j = input_extents[1].GetBegin(); j != input_extents[1].GetEnd(); ++j)
{
output_array->SetValue(
vtkArrayCoordinates(j, i),
input_array2->GetValue(vtkArrayCoordinates(i, j)));
}
}
vtkArrayData* const output = vtkArrayData::GetData(outputVector);
output->ClearArrays();
output->AddArray(output_array);
output_array->Delete();
}
else
{
vtkErrorMacro(<< "Unsupported input array type.");
return 0;
}
}
return 1;
}
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