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/*=========================================================================
Program: Visualization Toolkit
Module: vtkVertexDegree.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.
=========================================================================*/
/*-------------------------------------------------------------------------
Copyright 2008 Sandia Corporation.
Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
#include "vtkVertexDegree.h"
#include "vtkCommand.h"
#include "vtkGraph.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkIntArray.h"
#include "vtkMath.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
vtkStandardNewMacro(vtkVertexDegree);
vtkVertexDegree::vtkVertexDegree()
{
this->OutputArrayName = 0;
}
vtkVertexDegree::~vtkVertexDegree()
{
// release mem
this->SetOutputArrayName(0);
}
int vtkVertexDegree::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 output
vtkGraph *input = vtkGraph::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkGraph *output = vtkGraph::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
// Do a shallow copy of the input to the output
output->ShallowCopy(input);
// Create the attribute array
vtkIntArray* DegreeArray = vtkIntArray::New();
if (this->OutputArrayName)
{
DegreeArray->SetName(this->OutputArrayName);
}
else
{
DegreeArray->SetName("VertexDegree");
}
DegreeArray->SetNumberOfTuples(output->GetNumberOfVertices());
// Now loop through the vertices and set their degree in the array
for(int i=0;i< DegreeArray->GetNumberOfTuples(); ++i)
{
DegreeArray->SetValue(i,output->GetDegree(i));
double progress = static_cast<double>(i) / static_cast<double>(DegreeArray->GetNumberOfTuples());
this->InvokeEvent(vtkCommand::ProgressEvent, &progress);
}
// Add attribute array to the output
output->GetVertexData()->AddArray(DegreeArray);
DegreeArray->Delete();
return 1;
}
void vtkVertexDegree::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "OutputArrayName: "
<< (this->OutputArrayName ? this->OutputArrayName : "(none)") << endl;
}
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