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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 "itkAffineTransform.h"
#include "itkCompositeTransform.h"
const double epsilon = 1e-10;
template <typename TMatrix>
bool
testMatrix(const TMatrix & m1, const TMatrix & m2)
{
bool pass = true;
for (unsigned int i = 0; i < TMatrix::RowDimensions; ++i)
{
for (unsigned int j = 0; j < TMatrix::ColumnDimensions; ++j)
{
if (itk::Math::abs(m1[i][j] - m2[i][j]) > epsilon)
{
pass = false;
}
}
}
return pass;
}
template <typename TVector>
bool
testVector(const TVector & v1, const TVector & v2)
{
bool pass = true;
for (unsigned int i = 0; i < TVector::Dimension; ++i)
{
if (itk::Math::abs(v1[i] - v2[i]) > epsilon)
{
pass = false;
}
}
return pass;
}
int
itkTransformCloneTest(int, char *[])
{
using AffineTransformType = itk::AffineTransform<double, 3>;
using Transform3DType = itk::Transform<double, 3, 3>;
auto affineXfrm = AffineTransformType::New();
AffineTransformType::OutputVectorType axis, offset;
axis[0] = -1.0;
axis[1] = 1.0;
axis[2] = 0.0;
affineXfrm->Rotate3D(axis, 1.3);
axis[0] = 0.0;
axis[1] = 0.0;
axis[2] = -1.0;
affineXfrm->Rotate3D(axis, 0.5);
offset[0] = 999.0;
offset[1] = -31415926.0;
offset[2] = 32.768;
affineXfrm->Translate(offset);
Transform3DType::Pointer clonePtr = affineXfrm->Clone().GetPointer();
AffineTransformType::Pointer cloneAffineXfrm = dynamic_cast<AffineTransformType *>(clonePtr.GetPointer());
if (cloneAffineXfrm.IsNull())
{
std::cerr << "Failed to downcast return value from Clone to "
<< "AffineTransform, reported type is " << clonePtr->GetTransformTypeAsString() << std::endl;
return EXIT_FAILURE;
}
const AffineTransformType::MatrixType & cloneMatrix = cloneAffineXfrm->GetMatrix();
const AffineTransformType::OffsetType & cloneOffset = cloneAffineXfrm->GetOffset();
if (!testMatrix(cloneMatrix, affineXfrm->GetMatrix()))
{
std::cerr << "Matrix mismatch between original and clone" << std::endl;
return EXIT_FAILURE;
}
if (!testVector(cloneOffset, affineXfrm->GetOffset()))
{
std::cerr << "Offset mismatch between original and clone" << std::endl;
return EXIT_FAILURE;
}
using CompositeTransformType = itk::CompositeTransform<double, 3>;
auto compositeXfrm = CompositeTransformType::New();
compositeXfrm->AddTransform(clonePtr);
compositeXfrm->SetOnlyMostRecentTransformToOptimizeOn();
CompositeTransformType::Pointer cloneCompositeXfrm = compositeXfrm->Clone().GetPointer();
if ((compositeXfrm->GetNumberOfTransforms() != cloneCompositeXfrm->GetNumberOfTransforms()))
{
std::cerr << "Number of transforms doesn't match" << std::endl;
return EXIT_FAILURE;
}
for (unsigned int i = 0; i < compositeXfrm->GetNumberOfTransforms(); ++i)
{
AffineTransformType::ConstPointer originalXfrm =
dynamic_cast<const AffineTransformType *>(compositeXfrm->GetNthTransformConstPointer(i));
AffineTransformType::ConstPointer cloneXfrm =
dynamic_cast<const AffineTransformType *>(cloneCompositeXfrm->GetNthTransformConstPointer(i));
if (originalXfrm.IsNull() || cloneXfrm.IsNull())
{
std::cerr << "Failed downcast to Affine Transform" << std::endl;
return EXIT_FAILURE;
}
if (!testMatrix(originalXfrm->GetMatrix(), cloneXfrm->GetMatrix()))
{
std::cerr << "ConstituentTransformMismatch at " << i << std::endl;
return EXIT_FAILURE;
}
if (compositeXfrm->GetNthTransformToOptimize(i) != cloneCompositeXfrm->GetNthTransformToOptimize(i))
{
std::cerr << "Transform optimize flag mismatch at " << i << std::endl;
}
}
return EXIT_SUCCESS;
}
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