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/*=========================================================================
Program: ParaView
Module: vtkPConvertSelection.cxx
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkPConvertSelection.h"
#include "vtkCompositeDataSet.h"
#include "vtkDataSet.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkMultiProcessController.h"
#include "vtkNew.h"
#include "vtkObjectFactory.h"
#include "vtkPVExtractSelection.h"
#include "vtkSelection.h"
#include "vtkSelectionNode.h"
#include "vtkSmartPointer.h"
vtkStandardNewMacro(vtkPConvertSelection);
vtkCxxSetObjectMacro(vtkPConvertSelection, Controller, vtkMultiProcessController);
//----------------------------------------------------------------------------
vtkPConvertSelection::vtkPConvertSelection()
{
this->Controller = 0;
this->SetController(vtkMultiProcessController::GetGlobalController());
vtkNew<vtkPVExtractSelection> se;
this->SetSelectionExtractor(se.GetPointer());
}
//----------------------------------------------------------------------------
vtkPConvertSelection::~vtkPConvertSelection()
{
this->SetController(0);
}
//----------------------------------------------------------------------------
// returns if the input has PROCESS_ID == processId
static void vtkTrimTree(vtkSelection* input, int processId)
{
if (input)
{
unsigned int numNodes = input->GetNumberOfNodes();
for (unsigned int cc = 0; cc < numNodes; cc++)
{
vtkSelectionNode* node = input->GetNode(cc);
int propId = (node->GetProperties()->Has(vtkSelectionNode::PROCESS_ID()))?
node->GetProperties()->Get(vtkSelectionNode::PROCESS_ID()): -1;
if (propId != -1 && processId != -1 && propId != processId)
{
input->RemoveNode(node);
}
}
}
}
//----------------------------------------------------------------------------
// Adds the process id to all leaf nodes.
static void vtkAddProcessID(vtkSelection* input, int myId)
{
if (input)
{
unsigned int numNodes = input->GetNumberOfNodes();
for (unsigned int cc = 0; cc < numNodes; cc++)
{
input->GetNode(cc)->GetProperties()->Set(vtkSelectionNode::PROCESS_ID(), myId);
}
}
}
//----------------------------------------------------------------------------
int vtkPConvertSelection::RequestData(vtkInformation* request,
vtkInformationVector** inputVector,
vtkInformationVector* outputVector)
{
if (!this->Controller || this->Controller->GetNumberOfProcesses()==1)
{
// nothing much to do.
return this->Superclass::RequestData(request, inputVector, outputVector);
}
vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
vtkSelection* input = vtkSelection::GetData(inInfo);
// vtkDataObject* data = vtkDataObject::GetData(inputVector[1], 0);
vtkSelection* output = vtkSelection::GetData(outputVector, 0);
// Now we need to remote components from the input that don't belong to this
// process.
int myId = this->Controller->GetLocalProcessId();
vtkSmartPointer<vtkSelection> newInput =
vtkSmartPointer<vtkSelection>::New();
newInput->ShallowCopy(input);
::vtkTrimTree(newInput, myId);
// This is needed since vtkConvertSelection simply shallow copies input to
// output and raises errors when "data" is empty.
input->Register(this);
inInfo->Set(vtkDataObject::DATA_OBJECT(), newInput);
int ret = this->Superclass::RequestData(request, inputVector, outputVector);
inInfo->Set(vtkDataObject::DATA_OBJECT(), input);
input->UnRegister(this);
if (!ret)
{
return 0;
}
// Now add process id to the generated output.
::vtkAddProcessID(output, myId);
return 1;
}
//----------------------------------------------------------------------------
void vtkPConvertSelection::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "Controller: " << this->Controller << endl;
}
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