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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkEnsembleSource.h"
#include "vtkDataObject.h"
#include "vtkInformation.h"
#include "vtkInformationDataObjectMetaDataKey.h"
#include "vtkInformationIntegerKey.h"
#include "vtkInformationIntegerRequestKey.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkSmartPointer.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkTable.h"
#include <vector>
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkEnsembleSource);
vtkCxxSetObjectMacro(vtkEnsembleSource, MetaData, vtkTable);
vtkInformationKeyMacro(vtkEnsembleSource, META_DATA, DataObjectMetaData);
vtkInformationKeyMacro(vtkEnsembleSource, DATA_MEMBER, Integer);
// Subclass vtkInformationIntegerRequestKey to set the DataKey.
class vtkInformationEnsembleMemberRequestKey : public vtkInformationIntegerRequestKey
{
public:
vtkInformationEnsembleMemberRequestKey(const char* name, const char* location)
: vtkInformationIntegerRequestKey(name, location)
{
this->DataKey = vtkEnsembleSource::DATA_MEMBER();
}
};
vtkInformationKeySubclassMacro(
vtkEnsembleSource, UPDATE_MEMBER, EnsembleMemberRequest, IntegerRequest);
struct vtkEnsembleSourceInternal
{
std::vector<vtkSmartPointer<vtkAlgorithm>> Algorithms;
};
vtkEnsembleSource::vtkEnsembleSource()
{
this->SetNumberOfInputPorts(0);
this->SetNumberOfOutputPorts(1);
this->Internal = new vtkEnsembleSourceInternal;
this->CurrentMember = 0;
this->MetaData = nullptr;
}
vtkEnsembleSource::~vtkEnsembleSource()
{
delete this->Internal;
if (this->MetaData)
{
this->MetaData->Delete();
this->MetaData = nullptr;
}
}
vtkTypeBool vtkEnsembleSource::ProcessRequest(
vtkInformation* request, vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
vtkInformation* outInfo = outputVector->GetInformationObject(0);
vtkAlgorithm* currentReader = this->GetCurrentReader(outInfo);
if (currentReader)
{
if (request->Has(vtkDemandDrivenPipeline::REQUEST_DATA_OBJECT()))
{
// Make sure to initialize our output to the right type.
// Note all ensemble members are expected to produce the same
// data type or we are toast.
currentReader->UpdateDataObject();
vtkDataObject* rOutput = currentReader->GetOutputDataObject(0);
vtkDataObject* output = rOutput->NewInstance();
outputVector->GetInformationObject(0)->Set(vtkDataObject::DATA_OBJECT(), output);
output->Delete();
return 1;
}
if (request->Has(vtkDemandDrivenPipeline::REQUEST_INFORMATION()))
{
if (this->MetaData)
{
outputVector->GetInformationObject(0)->Set(META_DATA(), this->MetaData);
}
// Call RequestInformation on all readers as they may initialize
// data structures there. Note that this has to be done here
// because current reader can be changed with a pipeline request
// which does not cause REQUEST_INFORMATION to happen again.
std::vector<vtkSmartPointer<vtkAlgorithm>>::iterator iter =
this->Internal->Algorithms.begin();
std::vector<vtkSmartPointer<vtkAlgorithm>>::iterator end = this->Internal->Algorithms.end();
for (; iter != end; ++iter)
{
int retVal = (*iter)->ProcessRequest(request, inputVector, outputVector);
if (!retVal)
{
return retVal;
}
}
return 1;
}
return currentReader->ProcessRequest(request, inputVector, outputVector);
}
return this->Superclass::ProcessRequest(request, inputVector, outputVector);
}
void vtkEnsembleSource::AddMember(vtkAlgorithm* alg)
{
this->Internal->Algorithms.emplace_back(alg);
}
void vtkEnsembleSource::RemoveAllMembers()
{
this->Internal->Algorithms.clear();
}
unsigned int vtkEnsembleSource::GetNumberOfMembers()
{
return static_cast<unsigned int>(this->Internal->Algorithms.size());
}
vtkAlgorithm* vtkEnsembleSource::GetCurrentReader(vtkInformation* outInfo)
{
unsigned int currentMember = 0;
if (outInfo->Has(UPDATE_MEMBER()))
{
currentMember = static_cast<unsigned int>(outInfo->Get(UPDATE_MEMBER()));
}
else
{
currentMember = this->CurrentMember;
}
if (currentMember >= this->GetNumberOfMembers())
{
return nullptr;
}
return this->Internal->Algorithms[currentMember];
}
int vtkEnsembleSource::FillOutputPortInformation(int, vtkInformation* info)
{
info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkDataObject");
return 1;
}
void vtkEnsembleSource::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "Current member: " << this->CurrentMember << endl;
os << indent << "MetaData: " << endl;
if (this->MetaData)
{
this->MetaData->PrintSelf(os, indent.GetNextIndent());
}
else
{
os << indent << "(nullptr)" << endl;
}
}
VTK_ABI_NAMESPACE_END
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