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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkGraphToPolyData.cxx,v $
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.
=========================================================================*/
/*----------------------------------------------------------------------------
Copyright (c) Sandia Corporation
See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.
----------------------------------------------------------------------------*/
#include "vtkGraphToPolyData.h"
#include "vtkCellArray.h"
#include "vtkCellData.h"
#include "vtkMath.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkIdTypeArray.h"
#include "vtkAbstractGraph.h"
vtkCxxRevisionMacro(vtkGraphToPolyData, "$Revision: 1.6 $");
vtkStandardNewMacro(vtkGraphToPolyData);
vtkGraphToPolyData::vtkGraphToPolyData()
{
}
void vtkGraphToPolyData::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
}
int vtkGraphToPolyData::FillInputPortInformation(int vtkNotUsed(port), vtkInformation* info)
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkAbstractGraph");
return 1;
}
int vtkGraphToPolyData::RequestData(
vtkInformation *vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
// get the info objects
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
vtkInformation *outInfo = outputVector->GetInformationObject(0);
// get the input and ouptut
vtkAbstractGraph *input = vtkAbstractGraph::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkPolyData *output = vtkPolyData::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkDataArray* edgeGhostLevels = vtkDataArray::SafeDownCast(
input->GetCellData()->GetAbstractArray("vtkGhostLevels"));
if (edgeGhostLevels == NULL)
{
vtkCellArray* newLines = vtkCellArray::New();
vtkIdType points[2];
for (vtkIdType i = 0; i < input->GetNumberOfEdges(); i++)
{
points[0] = input->GetSourceVertex(i);
points[1] = input->GetTargetVertex(i);
newLines->InsertNextCell(2, points);
}
// Send the data to output.
output->SetPoints(input->GetPoints());
output->SetLines(newLines);
// Points correspond to vertices, so pass the data along.
output->GetPointData()->PassData(input->GetPointData());
// Cells correspond to edges, so pass the cell data along.
output->GetCellData()->PassData(input->GetCellData());
// Clean up.
newLines->Delete();
}
else
{
vtkIdType numEdges = input->GetNumberOfEdges();
vtkCellData* inputCellData = input->GetCellData();
vtkCellData* outputCellData = output->GetCellData();
outputCellData->CopyAllocate(inputCellData);
vtkCellArray* newLines = vtkCellArray::New();
newLines->Allocate(newLines->EstimateSize(numEdges, 2));
vtkIdType points[2];
// Only create lines for non-ghost edges
for (vtkIdType i = 0; i < numEdges; i++)
{
if (edgeGhostLevels->GetComponent(i, 0) == 0)
{
points[0] = input->GetSourceVertex(i);
points[1] = input->GetTargetVertex(i);
vtkIdType ind = newLines->InsertNextCell(2, points);
outputCellData->CopyData(inputCellData, i, ind);
}
}
// Send data to output
output->SetPoints(input->GetPoints());
output->SetLines(newLines);
output->GetPointData()->PassData(input->GetPointData());
// Clean up
newLines->Delete();
output->Squeeze();
}
return 1;
}
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