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/*=========================================================================
Program: Visualization Toolkit
Module: vtkExtractSelectionBase.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm 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 "vtkExtractSelectionBase.h"
#include "vtkGraph.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkMultiBlockDataSet.h"
#include "vtkObjectFactory.h"
#include "vtkTable.h"
#include "vtkUnstructuredGrid.h"
//----------------------------------------------------------------------------
vtkExtractSelectionBase::vtkExtractSelectionBase()
{
this->PreserveTopology = 0;
this->SetNumberOfInputPorts(2);
}
//----------------------------------------------------------------------------
vtkExtractSelectionBase::~vtkExtractSelectionBase()
{
}
//----------------------------------------------------------------------------
int vtkExtractSelectionBase::FillInputPortInformation(
int port, vtkInformation* info)
{
if (port==0)
{
// Cannot work with composite datasets.
info->Remove(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE());
info->Append(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkDataSet");
info->Append(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkGraph");
info->Append(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkTable");
}
else
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkSelection");
info->Set(vtkAlgorithm::INPUT_IS_OPTIONAL(), 1);
}
return 1;
}
//----------------------------------------------------------------------------
// Needed because parent class sets output type to input type
// and we sometimes want to change it to make an UnstructuredGrid regardless of
// input type
int vtkExtractSelectionBase::RequestDataObject(
vtkInformation*,
vtkInformationVector** inputVector ,
vtkInformationVector* outputVector)
{
vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
if (!inInfo)
{
return 0;
}
vtkDataSet *input = vtkDataSet::GetData(inInfo);
vtkInformation* outInfo = outputVector->GetInformationObject(0);
if (input)
{
int passThrough = this->PreserveTopology? 1 : 0;
vtkDataSet *output = vtkDataSet::GetData(outInfo);
if (!output ||
(passThrough && !output->IsA(input->GetClassName())) ||
(!passThrough && !output->IsA("vtkUnstructuredGrid")))
{
vtkDataSet* newOutput = NULL;
if (!passThrough)
{
// The mesh will be modified.
newOutput = vtkUnstructuredGrid::New();
}
else
{
// The mesh will not be modified.
newOutput = input->NewInstance();
}
outInfo->Set(vtkDataObject::DATA_OBJECT(), newOutput);
newOutput->Delete();
}
return 1;
}
vtkGraph *graphInput = vtkGraph::GetData(inInfo);
if (graphInput)
{
// Accept graph input, but we don't produce the correct extracted
// graph as output yet.
return 1;
}
vtkTable *tableInput = vtkTable::GetData(inInfo);
if (tableInput)
{
vtkTable *output = vtkTable::GetData(outInfo);
if (!output)
{
output = vtkTable::New();
outInfo->Set(vtkDataObject::DATA_OBJECT(), output);
output->Delete();
}
return 1;
}
return 0;
}
//----------------------------------------------------------------------------
void vtkExtractSelectionBase::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "PreserveTopology: " << this->PreserveTopology << endl;
}
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