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/*=========================================================================
Program: Visualization Toolkit
Module: ArrayTransposeMatrix.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 <vtkArrayData.h>
#include <vtkArrayPrint.h>
#include <vtkSmartPointer.h>
#include <vtkSparseArray.h>
#include <vtkTransposeMatrix.h>
#include <vtksys/ios/iostream>
#include <vtksys/stl/stdexcept>
#define test_expression(expression) \
{ \
if(!(expression)) \
throw std::runtime_error("Expression failed: " #expression); \
}
int ArrayTransposeMatrix(int vtkNotUsed(argc), char *vtkNotUsed(argv)[])
{
cout << setprecision(17);
try
{
vtkSmartPointer<vtkSparseArray<double> > source = vtkSmartPointer<vtkSparseArray<double> >::New();
source->Resize(vtkArrayExtents(3, 2));
source->AddValue(vtkArrayCoordinates(0, 1), 1);
source->AddValue(vtkArrayCoordinates(1, 0), 2);
source->AddValue(vtkArrayCoordinates(2, 0), 3);
cout << "source matrix:\n";
vtkPrintMatrixFormat(cout, source.GetPointer());
vtkSmartPointer<vtkArrayData> source_data = vtkSmartPointer<vtkArrayData>::New();
source_data->AddArray(source);
vtkSmartPointer<vtkTransposeMatrix> transpose = vtkSmartPointer<vtkTransposeMatrix>::New();
transpose->SetInputData(source_data);
transpose->Update();
vtkSparseArray<double>* const output = vtkSparseArray<double>::SafeDownCast(
transpose->GetOutput()->GetArray(static_cast<vtkIdType>(0)));
cout << "output matrix:\n";
vtkPrintMatrixFormat(cout, output);
test_expression(output);
test_expression(output->GetExtent(0).GetSize() == 2);
test_expression(output->GetExtent(1).GetSize() == 3);
test_expression(output->GetValue(vtkArrayCoordinates(0, 0)) == 0);
test_expression(output->GetValue(vtkArrayCoordinates(0, 1)) == 2);
test_expression(output->GetValue(vtkArrayCoordinates(0, 2)) == 3);
test_expression(output->GetValue(vtkArrayCoordinates(1, 0)) == 1);
test_expression(output->GetValue(vtkArrayCoordinates(1, 1)) == 0);
test_expression(output->GetValue(vtkArrayCoordinates(1, 2)) == 0);
return 0;
}
catch(std::exception& e)
{
cerr << e.what() << endl;
return 1;
}
}
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