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itkInputMeshIO.h
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itkInputMeshIO.h
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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 itkInputMeshIO_h
#define itkInputMeshIO_h
#include "itkPipeline.h"
#include "itkWASMMeshIOBase.h"
#include "itkWASMMeshIO.h"
#ifndef ITK_WASM_NO_MEMORY_IO
#include "itkWASMExports.h"
#endif
#ifndef ITK_WASM_NO_FILESYSTEM_IO
#endif
namespace itk
{
namespace wasm
{
/**
*\class InputMeshIO
* \brief Input mesh for an itk::wasm::Pipeline from an itk::MeshIOBase
*
* This mesh is read from the filesystem or memory when ITK_WASM_PARSE_ARGS is called.
*
* This class is for the WriteMesh itk-wasm pipeline. Most pipelines will use itk::wasm::InputMesh.
*
* \ingroup WebAssemblyInterface
*/
class InputMeshIO
{
public:
void Set(const WASMMeshIOBase * meshIO) {
this->m_WASMMeshIOBase = meshIO;
}
const WASMMeshIOBase * Get() const {
return this->m_WASMMeshIOBase.GetPointer();
}
InputMeshIO() = default;
~InputMeshIO() = default;
protected:
typename WASMMeshIOBase::ConstPointer m_WASMMeshIOBase;
};
bool lexical_cast(const std::string &input, InputMeshIO &inputMeshIO)
{
if (input.empty())
{
return false;
}
if (wasm::Pipeline::get_use_memory_io())
{
#ifndef ITK_WASM_NO_MEMORY_IO
const unsigned int index = std::stoi(input);
auto json = getMemoryStoreInputJSON(0, index);
rapidjson::Document document;
document.Parse(json.c_str());
auto wasmMeshIO = itk::WASMMeshIO::New();
wasmMeshIO->SetJSON(document);
const unsigned int dimension = wasmMeshIO->GetPointDimension();
auto wasmMeshIOBase = itk::WASMMeshIOBase::New();
const rapidjson::Value & pointsJson = document["points"];
const std::string pointsString( pointsJson.GetString() );
const char * pointsPtr = reinterpret_cast< char * >( std::atol(pointsString.substr(35).c_str()) );
WASMMeshIOBase::DataContainerType * pointsContainer = wasmMeshIOBase->GetPointsContainer();
SizeValueType numberOfBytes = wasmMeshIO->GetNumberOfPoints() * wasmMeshIO->GetPointDimension() * WASMMeshIO::ITKComponentSize( wasmMeshIO->GetPointComponentType() );
pointsContainer->resize(numberOfBytes);
pointsContainer->assign(pointsPtr, pointsPtr + numberOfBytes);
const rapidjson::Value & cellsJson = document["cells"];
const std::string cellsString( cellsJson.GetString() );
const char * cellsPtr = reinterpret_cast< char * >( std::atol(cellsString.substr(35).c_str()) );
WASMMeshIOBase::DataContainerType * cellsContainer = wasmMeshIOBase->GetCellsContainer();
numberOfBytes = static_cast< SizeValueType >( wasmMeshIO->GetCellBufferSize() * WASMMeshIO::ITKComponentSize( wasmMeshIO->GetCellComponentType() ));
cellsContainer->resize(numberOfBytes);
cellsContainer->assign(cellsPtr, cellsPtr + numberOfBytes);
const rapidjson::Value & pointDataJson = document["pointData"];
const std::string pointDataString( pointDataJson.GetString() );
const char * pointDataPtr = reinterpret_cast< char * >( std::atol(pointDataString.substr(35).c_str()) );
WASMMeshIOBase::DataContainerType * pointDataContainer = wasmMeshIOBase->GetPointDataContainer();
numberOfBytes =
static_cast< SizeValueType >(
wasmMeshIO->GetNumberOfPointPixels() * wasmMeshIO->GetNumberOfPointPixelComponents() * WASMMeshIO::ITKComponentSize( wasmMeshIO->GetPointPixelComponentType() )
);
pointDataContainer->resize(numberOfBytes);
pointDataContainer->assign(pointDataPtr, pointDataPtr + numberOfBytes);
const rapidjson::Value & cellDataJson = document["cellData"];
const std::string cellDataString( cellDataJson.GetString() );
const char * cellDataPtr = reinterpret_cast< char * >( std::atol(cellDataString.substr(35).c_str()) );
WASMMeshIOBase::DataContainerType * cellDataContainer = wasmMeshIOBase->GetCellDataContainer();
numberOfBytes =
static_cast< SizeValueType >(
wasmMeshIO->GetNumberOfPointPixels() * wasmMeshIO->GetNumberOfPointPixelComponents() * WASMMeshIO::ITKComponentSize( wasmMeshIO->GetPointPixelComponentType() )
);
cellDataContainer->resize(numberOfBytes);
cellDataContainer->assign(cellDataPtr, cellDataPtr + numberOfBytes);
wasmMeshIOBase->SetMeshIO(wasmMeshIO, false);
wasmMeshIOBase->SetJSON(json);
inputMeshIO.Set(wasmMeshIOBase);
#else
return false;
#endif
}
else
{
#ifndef ITK_WASM_NO_FILESYSTEM_IO
auto wasmMeshIO = itk::WASMMeshIO::New();
wasmMeshIO->SetFileName(input);
auto wasmMeshIOBase = itk::WASMMeshIOBase::New();
wasmMeshIOBase->SetMeshIO(wasmMeshIO);
inputMeshIO.Set(wasmMeshIOBase);
#else
return false;
#endif
}
return true;
}
} // end namespace wasm
} // end namespace itk
#endif