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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 "itkFEMObject.h"
#include "itkFEMObjectSpatialObject.h"
#include "itkGroupSpatialObject.h"
#include "itkSpatialObject.h"
#include "itkFEMSpatialObjectReader.h"
#include "itkFEMSpatialObjectWriter.h"
#include <iostream>
// Example taken from 'Fundamentals of the Finite ELement Method' - Grandin
int
itkFEMElement2DC0LinearQuadrilateralStressTestFEMObjectReader(int, char *[])
{
// Need to register default FEM object types,
// and setup spatialReader to recognize FEM types
// which is all currently done as a HACK in
// the initialization of the itk::FEMFactoryBase::GetFactory()
itk::FEMFactoryBase::GetFactory()->RegisterDefaultTypes();
using SpatialObjectType = itk::SpatialObject<2>;
using SpatialObjectPointer = SpatialObjectType::Pointer;
SpatialObjectPointer Spatial = SpatialObjectType::New();
using FEMSpatialObjectReaderType = itk::FEMSpatialObjectReader<2>;
using FEMSpatialObjectReaderPointer = FEMSpatialObjectReaderType::Pointer;
FEMSpatialObjectReaderPointer spatialReader = FEMSpatialObjectReaderType::New();
spatialReader->SetFileName("C:/Research/ITKGit/ITK/Testing/Data/Input/FEM/Trial.meta");
spatialReader->Update();
using FEMSpatialObjectWriterType = itk::FEMSpatialObjectWriter<2>;
using FEMSpatialObjectWriterPointer = FEMSpatialObjectWriterType::Pointer;
FEMSpatialObjectWriterPointer spatialWriter = FEMSpatialObjectWriterType::New();
spatialWriter->SetInput(spatialReader->GetScene());
spatialWriter->SetFileName("C:/Research/ITKGit/ITK/Testing/Data/Input/FEM/TrialWrite.meta");
spatialWriter->Update();
FEMSpatialObjectReaderType::ScenePointer myScene = spatialReader->GetScene();
if (!myScene)
{
std::cout << "No Scene : [FAILED]" << std::endl;
return EXIT_FAILURE;
}
std::cout << " [PASSED]" << std::endl;
// Testing the fe mesh validity
using FEMObjectSpatialObjectType = itk::FEMObjectSpatialObject<2>;
using FEMObjectSpatialObjectPointer = FEMObjectSpatialObjectType::Pointer;
FEMObjectSpatialObjectType::ChildrenListType * children = spatialReader->GetGroup()->GetChildren();
if (strcmp((*(children->begin()))->GetTypeName(), "FEMObjectSpatialObject"))
{
std::cout << " [FAILED]" << std::endl;
return EXIT_FAILURE;
}
FEMObjectSpatialObjectType::Pointer femSO =
dynamic_cast<FEMObjectSpatialObjectType *>((*(children->begin())).GetPointer());
if (!femSO)
{
std::cout << " dynamic_cast [FAILED]" << std::endl;
return EXIT_FAILURE;
}
delete children;
femSO->GetFEMObject()->Solve();
float soln[8];
for (int i = 0; i < 8; ++i)
{
soln[i] = femSO->GetFEMObject()->GetSolution(i);
std::cout << "Solution[" << i << "]:" << soln[i] << std::endl;
}
std::cout << "Test PASSED!" << std::endl;
return EXIT_SUCCESS;
}
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