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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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.
*
*=========================================================================*/
#include <iostream>
#include "itkArray2D.h"
int
itkArray2DTest(int, char *[])
{
using ArrayType = itk::Array2D<double>;
using VnlMatrixType = vnl_matrix<double>;
constexpr unsigned int rows = 3;
constexpr unsigned int cols = 4;
ArrayType a(rows, cols);
VnlMatrixType vm(rows, cols);
for (unsigned int r = 0; r < rows; ++r)
{
for (unsigned int c = 0; c < cols; ++c)
{
const auto value = static_cast<double>(r + c);
a.SetElement(r, c, value);
vm(r, c) = value;
}
}
const double tolerance = 1e-6;
// test copy constructor
ArrayType b(a);
for (unsigned int r = 0; r < rows; ++r)
{
for (unsigned int c = 0; c < cols; ++c)
{
double diff = a.GetElement(r, c) - b(r, c);
diff = (diff > 0.0) ? diff : -diff; // take abs value
if (diff > tolerance)
{
std::cerr << "Error in copy constructor " << std::endl;
return EXIT_FAILURE;
}
}
}
// test construction from vnl_matrix
ArrayType d(vm);
for (unsigned int r = 0; r < rows; ++r)
{
for (unsigned int c = 0; c < cols; ++c)
{
double diff = d(r, c) - vm(r, c);
diff = (diff > 0.0) ? diff : -diff; // take abs value
if (diff > tolerance)
{
std::cerr << "Error in construction from vnl_matrix" << std::endl;
return EXIT_FAILURE;
}
}
}
// test for assignment from Array2D
ArrayType e;
e = a;
for (unsigned int r = 0; r < rows; ++r)
{
for (unsigned int c = 0; c < cols; ++c)
{
double diff = a(r, c) - e(r, c);
diff = (diff > 0.0) ? diff : -diff; // take abs value
if (diff > tolerance)
{
std::cerr << "Error in assignment from Array2D constructor " << std::endl;
return EXIT_FAILURE;
}
}
}
// test for assignment from vnl_matrix
ArrayType f;
f = vm;
for (unsigned int r = 0; r < rows; ++r)
{
for (unsigned int c = 0; c < cols; ++c)
{
double diff = f(r, c) - vm(r, c);
diff = (diff > 0.0) ? diff : -diff; // take abs value
if (diff > tolerance)
{
std::cerr << "Error in assignment from vn_matrix" << std::endl;
return EXIT_FAILURE;
}
}
}
std::cout << "Test Passed ! " << std::endl;
return EXIT_SUCCESS;
}
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