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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.
*
*=========================================================================*/
#ifndef itkCleanQuadEdgeMeshFilter_hxx
#define itkCleanQuadEdgeMeshFilter_hxx
#include "itkMath.h"
namespace itk
{
template <typename TInputMesh, typename TOutputMesh>
CleanQuadEdgeMeshFilter<TInputMesh, TOutputMesh>::CleanQuadEdgeMeshFilter()
{
this->m_AbsoluteTolerance = InputCoordRepType{};
this->m_RelativeTolerance = InputCoordRepType{};
this->m_BoundingBox = BoundingBoxType::New();
this->m_Criterion = CriterionType::New();
this->m_Criterion->SetTopologicalChange(false);
this->m_Decimation = DecimationType::New();
this->m_Decimation->SetCriterion(this->m_Criterion);
}
template <typename TInputMesh, typename TOutputMesh>
void
CleanQuadEdgeMeshFilter<TInputMesh, TOutputMesh>::GenerateData()
{
InputCoordRepType zeroValue{};
InputCoordRepType absoluteToleranceSquared = this->m_AbsoluteTolerance * this->m_AbsoluteTolerance;
if ((Math::ExactlyEquals(this->m_AbsoluteTolerance, zeroValue)) &&
(Math::NotExactlyEquals(this->m_RelativeTolerance, zeroValue)))
{
this->m_BoundingBox->SetPoints(this->GetInput()->GetPoints());
this->m_BoundingBox->ComputeBoundingBox();
absoluteToleranceSquared =
this->m_RelativeTolerance * this->m_RelativeTolerance * this->m_BoundingBox->GetDiagonalLength2();
}
this->MergePoints(absoluteToleranceSquared);
this->CleanPoints();
}
template <typename TInputMesh, typename TOutputMesh>
void
CleanQuadEdgeMeshFilter<TInputMesh, TOutputMesh>::MergePoints(const InputCoordRepType absoluteToleranceSquared)
{
OutputMeshPointer output = this->GetOutput();
this->m_Criterion->SetMeasureBound(absoluteToleranceSquared);
this->m_Decimation->SetInput(this->GetInput());
this->m_Decimation->Update();
InputMeshPointer decimatedMesh = this->m_Decimation->GetOutput();
InputPointsContainerIterator pointsIt = decimatedMesh->GetPoints()->Begin();
InputPointsContainerIterator pointsItEnd = decimatedMesh->GetPoints()->End();
OutputPointType outputPoint;
while (pointsIt != pointsItEnd)
{
outputPoint.CastFrom(pointsIt.Value());
output->SetPoint(pointsIt.Index(), outputPoint);
++pointsIt;
}
// Copy Edge Cells
InputCellsContainerIterator cellIt = decimatedMesh->GetEdgeCells()->Begin();
InputCellsContainerIterator cellItEnd = decimatedMesh->GetEdgeCells()->End();
InputEdgeCellType * qeCell;
InputQEPrimal * qeGeometry;
while (cellIt != cellItEnd)
{
qeCell = dynamic_cast<InputEdgeCellType *>(cellIt.Value());
qeGeometry = qeCell->GetQEGeom();
output->AddEdgeWithSecurePointList(qeGeometry->GetOrigin(), qeGeometry->GetDestination());
++cellIt;
}
// Copy cells
cellIt = decimatedMesh->GetCells()->Begin();
cellItEnd = decimatedMesh->GetCells()->End();
InputPolygonCellType * polygonCell;
while (cellIt != cellItEnd)
{
polygonCell = dynamic_cast<InputPolygonCellType *>(cellIt.Value());
if (polygonCell)
{
InputPointIdList points;
for (InputPointsIdInternalIterator pit = polygonCell->InternalPointIdsBegin();
pit != polygonCell->InternalPointIdsEnd();
++pit)
{
points.push_back((*pit));
}
output->AddFaceWithSecurePointList(points);
}
++cellIt;
}
}
template <typename TInputMesh, typename TOutputMesh>
void
CleanQuadEdgeMeshFilter<TInputMesh, TOutputMesh>::CleanPoints()
{
OutputMeshPointer output = this->GetOutput();
OutputPointsContainerIterator p_it = output->GetPoints()->Begin();
OutputPointsContainerIterator p_end = output->GetPoints()->End();
OutputPointIdentifier id(0);
while (p_it != p_end)
{
id = p_it->Index();
if (output->FindEdge(id) == nullptr)
{
output->DeletePoint(id);
}
++p_it;
}
output->SqueezePointsIds();
}
template <typename TInputMesh, typename TOutputMesh>
void
CleanQuadEdgeMeshFilter<TInputMesh, TOutputMesh>::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "AbsoluteTolerance: " << m_AbsoluteTolerance << std::endl;
os << indent << "RelativeTolerance: " << m_RelativeTolerance << std::endl;
}
} // end namespace itk
#endif
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