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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkJSONImageWriter.h"
#include "vtkCharArray.h"
#include "vtkCommand.h"
#include "vtkDataArray.h"
#include "vtkErrorCode.h"
#include "vtkImageData.h"
#include "vtkInformation.h"
#include "vtkInformationExecutivePortKey.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include <vtksys/FStream.hxx>
#include <vtksys/SystemTools.hxx>
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkJSONImageWriter);
//------------------------------------------------------------------------------
vtkJSONImageWriter::vtkJSONImageWriter()
{
this->FileName = nullptr;
this->ArrayName = nullptr;
this->Slice = -1;
this->SetNumberOfOutputPorts(0);
}
//------------------------------------------------------------------------------
vtkJSONImageWriter::~vtkJSONImageWriter()
{
this->SetFileName(nullptr);
this->SetArrayName(nullptr);
}
//------------------------------------------------------------------------------
void vtkJSONImageWriter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "FileName: " << (this->FileName ? this->FileName : "(none)") << "\n";
}
//------------------------------------------------------------------------------
int vtkJSONImageWriter::RequestData(vtkInformation* vtkNotUsed(request),
vtkInformationVector** inputVector, vtkInformationVector* vtkNotUsed(outputVector))
{
this->SetErrorCode(vtkErrorCode::NoError);
vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
vtkImageData* input = vtkImageData::SafeDownCast(inInfo->Get(vtkDataObject::DATA_OBJECT()));
// Error checking
if (input == nullptr)
{
vtkErrorMacro(<< "Write:Please specify an input!");
return 0;
}
if (!this->FileName)
{
vtkErrorMacro(<< "Write:Please specify either a FileName or a file prefix and pattern");
this->SetErrorCode(vtkErrorCode::NoFileNameError);
return 0;
}
// Write
this->InvokeEvent(vtkCommand::StartEvent);
vtkCharArray* validMask =
vtkArrayDownCast<vtkCharArray>(input->GetPointData()->GetArray("vtkValidPointMask"));
vtksys::ofstream file(this->FileName, ios::out);
if (file.fail())
{
vtkErrorMacro("RecursiveWrite: Could not open file " << this->FileName);
this->SetErrorCode(vtkErrorCode::CannotOpenFileError);
return 0;
}
file << "{"
<< "\"filename\" : \"" << this->FileName << "\""
<< ",\n\"dimensions\": [" << input->GetDimensions()[0] << ", " << input->GetDimensions()[1]
<< ", " << input->GetDimensions()[2] << "]"
<< ",\n\"origin\": [" << input->GetOrigin()[0] << ", " << input->GetOrigin()[1] << ", "
<< input->GetOrigin()[2] << "]"
<< ",\n\"spacing\": [" << input->GetSpacing()[0] << ", " << input->GetSpacing()[1] << ", "
<< input->GetSpacing()[2] << "]";
// Write all arrays
int nbArrays = input->GetPointData()->GetNumberOfArrays();
for (int i = 0; i < nbArrays; ++i)
{
vtkDataArray* array = input->GetPointData()->GetArray(i);
// We only dump scalar values
if (array->GetNumberOfComponents() != 1 || !strcmp(array->GetName(), "vtkValidPointMask"))
{
continue;
}
if (this->ArrayName && strlen(this->ArrayName) > 0 &&
strcmp(array->GetName(), this->ArrayName) != 0)
{
continue;
}
file << ",\n\"" << array->GetName() << "\": [";
vtkIdType startIdx = 0;
vtkIdType endIdx = array->GetNumberOfTuples();
if (this->Slice >= 0)
{
vtkIdType sliceSize = input->GetDimensions()[0] * input->GetDimensions()[1];
startIdx = sliceSize * this->Slice;
endIdx = startIdx + sliceSize;
}
for (vtkIdType idx = startIdx; idx < endIdx; ++idx)
{
if (idx % 50 == 0)
{
file << "\n";
file.flush();
}
if (idx != startIdx)
{
file << ", ";
}
if ((validMask == nullptr) || (validMask && validMask->GetValue(idx)))
{
file << array->GetVariantValue(idx).ToString();
}
else
{
file << "null";
}
}
file << "]";
}
file << "\n}" << endl;
file.close();
file.flush();
this->InvokeEvent(vtkCommand::EndEvent);
return 1;
}
//------------------------------------------------------------------------------
void vtkJSONImageWriter::Write()
{
this->Modified();
this->UpdateWholeExtent();
}
VTK_ABI_NAMESPACE_END
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