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/*=========================================================================
Program: Visualization Toolkit
Module: vtkUnstructuredGridToReebGraphFilter.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 "vtkUnstructuredGridToReebGraphFilter.h"
#include "vtkElevationFilter.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkReebGraph.h"
#include "vtkUnstructuredGrid.h"
vtkStandardNewMacro(vtkUnstructuredGridToReebGraphFilter);
//----------------------------------------------------------------------------
vtkUnstructuredGridToReebGraphFilter::vtkUnstructuredGridToReebGraphFilter()
{
FieldId = 0;
this->SetNumberOfInputPorts(1);
}
//----------------------------------------------------------------------------
vtkUnstructuredGridToReebGraphFilter::~vtkUnstructuredGridToReebGraphFilter()
{
}
//----------------------------------------------------------------------------
int vtkUnstructuredGridToReebGraphFilter::FillInputPortInformation( int vtkNotUsed(portNumber), vtkInformation *info)
{
info->Remove(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE());
info->Append(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkUnstructuredGrid");
return 1;
}
//----------------------------------------------------------------------------
int vtkUnstructuredGridToReebGraphFilter::FillOutputPortInformation(
int, vtkInformation *info)
{
info->Set(vtkDirectedGraph::DATA_TYPE_NAME(), "vtkReebGraph");
return 1;
}
//----------------------------------------------------------------------------
void vtkUnstructuredGridToReebGraphFilter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "Field Id: " << this->FieldId << "\n";
}
//----------------------------------------------------------------------------
vtkReebGraph* vtkUnstructuredGridToReebGraphFilter::GetOutput()
{
return vtkReebGraph::SafeDownCast(this->GetOutputDataObject(0));
}
//----------------------------------------------------------------------------
int vtkUnstructuredGridToReebGraphFilter::RequestData(vtkInformation*,
vtkInformationVector** inputVector,
vtkInformationVector* outputVector)
{
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
vtkUnstructuredGrid *input = vtkUnstructuredGrid::SafeDownCast(
inInfo->Get(vtkUnstructuredGrid::DATA_OBJECT()));
vtkInformation *outInfo = outputVector->GetInformationObject(0);
vtkReebGraph *output = vtkReebGraph::SafeDownCast(
outInfo->Get(vtkReebGraph::DATA_OBJECT()));
// check for the presence of a scalar field
vtkDataArray *scalarField = input->GetPointData()->GetArray(FieldId);
if(!scalarField)
{
vtkElevationFilter* eFilter = vtkElevationFilter::New();
eFilter->SetInputData(input);
eFilter->Update();
output->Build(vtkUnstructuredGrid::SafeDownCast(eFilter->GetOutput()),
"Elevation");
eFilter->Delete();
}
else
{
output->Build(input, FieldId);
}
return 1;
}
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