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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 itkBYUMeshIO_h
#define itkBYUMeshIO_h
#include "ITKIOMeshBYUExport.h"
#include "itkMeshIOBase.h"
#include "itkNumberToString.h"
#include <fstream>
namespace itk
{
/**
* \class BYUMeshIO
* \brief This class defines how to read and write BYU Geometry File Format.
*
* \ingroup IOFilters
* \ingroup ITKIOMeshBYU
*/
class ITKIOMeshBYU_EXPORT BYUMeshIO : public MeshIOBase
{
public:
ITK_DISALLOW_COPY_AND_MOVE(BYUMeshIO);
/** Standard class type aliases. */
using Self = BYUMeshIO;
using Superclass = MeshIOBase;
using ConstPointer = SmartPointer<const Self>;
using Pointer = SmartPointer<Self>;
using StreamOffsetType = Superclass::StreamOffsetType;
using SizeValueType = Superclass::SizeValueType;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(BYUMeshIO);
/*-------- This part of the interfaces deals with reading data. ----- */
/** Determine if the file can be read with this MeshIO implementation.
* \param fileName The name of the file to test for reading.
* \post Sets classes MeshIOBase::m_FileName variable to be FileNameToWrite
* \return Returns true if this MeshIO can read the file specified.
*/
bool
CanReadFile(const char * fileName) override;
/** Set the spacing and dimension information for the set filename. */
void
ReadMeshInformation() override;
/** Reads the data from disk into the memory buffer provided. */
void
ReadPoints(void * buffer) override;
void
ReadCells(void * buffer) override;
void
ReadPointData(void * buffer) override;
void
ReadCellData(void * buffer) override;
/*-------- This part of the interfaces deals with writing data. ----- */
/** Determine if the file can be written with this MeshIO implementation.
* \param fileName The name of the file to test for writing.
* \post Sets classes MeshIOBase::m_FileName variable to be FileNameToWrite
* \return Returns true if this MeshIO can write the file specified.
*/
bool
CanWriteFile(const char * fileName) override;
/** Set the spacing and dimension information for the set filename. */
void
WriteMeshInformation() override;
/** Writes the data to disk from the memory buffer provided. */
void
WritePoints(void * buffer) override;
void
WriteCells(void * buffer) override;
void
WritePointData(void * buffer) override;
void
WriteCellData(void * buffer) override;
void
Write() override;
protected:
/** Write points to output stream */
template <typename T>
void
WritePoints(T * buffer, std::ofstream & outputFile)
{
Indent indent(1);
SizeValueType index{};
for (SizeValueType ii = 0; ii < this->m_NumberOfPoints; ++ii)
{
outputFile << indent;
for (unsigned int jj = 0; jj < this->m_PointDimension; ++jj)
{
outputFile << ConvertNumberToString(buffer[index++]) << ' ';
}
outputFile << '\n';
}
}
template <typename T>
void
WriteCells(T * buffer, std::ofstream & outputFile)
{
Indent indent(7);
SizeValueType index{};
for (SizeValueType ii = 0; ii < this->m_NumberOfCells; ++ii)
{
auto numberOfCellPoints = static_cast<unsigned int>(buffer[++index]);
++index;
for (unsigned int jj = 0; jj < numberOfCellPoints - 1; ++jj)
{
outputFile << indent << buffer[index++] + 1;
}
outputFile << indent << -static_cast<long long>(buffer[index++] + 1) << '\n';
}
}
protected:
BYUMeshIO();
~BYUMeshIO() override;
void
PrintSelf(std::ostream & os, Indent indent) const override;
private:
StreamOffsetType m_FilePosition{ 0 };
SizeValueType m_PartId{};
SizeValueType m_FirstCellId{};
SizeValueType m_LastCellId{};
};
} // end namespace itk
#endif
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