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/*=========================================================================
*
* Copyright UMC Utrecht and contributors
*
* 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
*
* http://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 itkTransformixInputPointFileReader_hxx
#define itkTransformixInputPointFileReader_hxx
#include "itkTransformixInputPointFileReader.h"
namespace itk
{
/**
* ***************GenerateOutputInformation ***********
*/
template <class TOutputMesh>
void
TransformixInputPointFileReader<TOutputMesh>::GenerateOutputInformation()
{
this->Superclass::GenerateOutputInformation();
/** The superclass tests already if it's a valid file; so just open it and
* assume it goes alright */
if (this->m_Reader.is_open())
{
this->m_Reader.close();
}
this->m_Reader.open(this->m_FileName);
/** Read the first entry */
std::string indexOrPoint;
this->m_Reader >> indexOrPoint;
/** Set the IsIndex bool and the number of points.*/
if (indexOrPoint == "point")
{
/** Input points are specified in world coordinates. */
this->m_PointsAreIndices = false;
this->m_Reader >> this->m_NumberOfPoints;
}
else if (indexOrPoint == "index")
{
/** Input points are specified as image indices. */
this->m_PointsAreIndices = true;
this->m_Reader >> this->m_NumberOfPoints;
}
else
{
/** Input points are assumed to be specified as image indices. */
this->m_PointsAreIndices = true;
this->m_NumberOfPoints = atoi(indexOrPoint.c_str());
}
/** Leave the file open for the generate data method */
} // end GenerateOutputInformation()
/**
* ***************GenerateData ***********
*/
template <class TOutputMesh>
void
TransformixInputPointFileReader<TOutputMesh>::GenerateData()
{
using PointsContainerType = typename OutputMeshType::PointsContainer;
using PointsContainerPointer = typename PointsContainerType::Pointer;
using PointType = typename OutputMeshType::PointType;
const unsigned int dimension = OutputMeshType::PointDimension;
OutputMeshPointer output = this->GetOutput();
PointsContainerPointer points = PointsContainerType::New();
/** Read the file */
if (this->m_Reader.is_open())
{
for (unsigned int i = 0; i < this->m_NumberOfPoints; ++i)
{
// read point from textfile
PointType point;
for (unsigned int j = 0; j < dimension; ++j)
{
if (!this->m_Reader.eof())
{
this->m_Reader >> point[j];
}
else
{
std::ostringstream msg;
msg << "The file is not large enough. \n"
<< "Filename: " << this->m_FileName << '\n';
MeshFileReaderException e(__FILE__, __LINE__, msg.str().c_str(), ITK_LOCATION);
throw e;
}
}
points->push_back(point);
}
}
else
{
std::ostringstream msg;
msg << "The file has unexpectedly been closed. \n"
<< "Filename: " << this->m_FileName << '\n';
MeshFileReaderException e(__FILE__, __LINE__, msg.str().c_str(), ITK_LOCATION);
throw e;
}
/** set in output */
output->Initialize();
output->SetPoints(points);
/** Close the reader */
this->m_Reader.close();
/** This indicates that the current BufferedRegion is equal to the
* requested region. This action prevents useless re-executions of
* the pipeline.
* (I copied this from the BinaryMaskToNarrowBandPointSetFilter) */
output->SetBufferedRegion(output->GetRequestedRegion());
} // end GenerateData()
} // end namespace itk
#endif
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