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/*=========================================================================
Program: Visualization Toolkit
Module: vtkPBGLVertexColoring.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.
-------------------------------------------------------------------------*/
/*
* Copyright (C) 2008 The Trustees of Indiana University.
* Use, modification and distribution is subject to the Boost Software
* License, Version 1.0. (See http://www.boost.org/LICENSE_1_0.txt)
*/
#include "vtkPBGLVertexColoring.h"
#include "vtkCellArray.h"
#include "vtkCellData.h"
#include "vtkDataArray.h"
#include "vtkDirectedGraph.h"
#include "vtkDistributedGraphHelper.h"
#include "vtkFloatArray.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkMath.h"
#include "vtkObjectFactory.h"
#include "vtkPBGLDistributedGraphHelper.h"
#include "vtkPBGLGraphAdapter.h"
#include "vtkPointData.h"
#include "vtkSelection.h"
#include "vtkSmartPointer.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkStringArray.h"
#include "vtkType.h"
#include "vtkUndirectedGraph.h"
#include "vtkVertexListIterator.h"
#include <boost/graph/use_mpi.hpp>
#include <boost/graph/distributed/boman_et_al_graph_coloring.hpp>
#include <boost/graph/parallel/algorithm.hpp>
#include <boost/property_map/property_map.hpp>
#include <vtksys/stl/utility> // for pair
using namespace boost;
vtkStandardNewMacro(vtkPBGLVertexColoring);
// Constructor/Destructor
vtkPBGLVertexColoring::vtkPBGLVertexColoring()
{
// Default values for the origin vertex
this->BlockSize = 10000;
this->ColorArrayName = 0;
this->SetNumberOfInputPorts(1);
this->SetNumberOfOutputPorts(1);
}
vtkPBGLVertexColoring::~vtkPBGLVertexColoring()
{
this->SetColorArrayName(0);
}
int vtkPBGLVertexColoring::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()));
// Send the data to output.
output->ShallowCopy(input);
// Create the color array
vtkIdTypeArray* colorArray = vtkIdTypeArray::New();
if (this->ColorArrayName)
{
colorArray->SetName(this->ColorArrayName);
}
else
{
colorArray->SetName("Color");
}
colorArray->SetNumberOfTuples(output->GetNumberOfVertices());
vtkDistributedGraphHelper *helper = output->GetDistributedGraphHelper();
if (!helper)
{
vtkErrorMacro("Distributed vtkGraph is required.");
return 1;
}
// We can only deal with Parallel BGL-distributed graphs.
vtkPBGLDistributedGraphHelper *pbglHelper
= vtkPBGLDistributedGraphHelper::SafeDownCast(helper);
if (!pbglHelper)
{
vtkErrorMacro("Can only perform parallel shortest-paths on a Parallel BGL distributed graph");
return 1;
}
int myRank = outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_PIECE_NUMBER());
// Distributed color map
typedef vtkDistributedVertexPropertyMapType<vtkIdTypeArray>::type
DistributedColorMap;
DistributedColorMap colorMap
= MakeDistributedVertexPropertyMap(output, colorArray);
// Execute the algorithm itself
if (vtkUndirectedGraph::SafeDownCast(output))
{
vtkUndirectedGraph *g = vtkUndirectedGraph::SafeDownCast(output);
boost::graph::distributed::boman_et_al_graph_coloring(g, colorMap,
this->BlockSize);
}
else
{
vtkErrorMacro("Vertex coloring requires an undirected, distributed vtkGraph.");
return 1;
}
// Add color array to the output
output->GetVertexData()->AddArray(colorArray);
colorArray->Delete();
return 1;
}
void vtkPBGLVertexColoring::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "BlockSize: " << this->BlockSize << endl;
os << indent << "ColorArrayName: "
<< (this->ColorArrayName ? this->ColorArrayName : "(none)")
<< endl;
}
//----------------------------------------------------------------------------
int vtkPBGLVertexColoring::FillInputPortInformation(
int port, vtkInformation* info)
{
// now add our info
if (port == 0)
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkGraph");
}
return 1;
}
//----------------------------------------------------------------------------
int vtkPBGLVertexColoring::FillOutputPortInformation(
int port, vtkInformation* info)
{
// now add our info
if (port == 0)
{
info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkGraph");
}
return 1;
}
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