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/*=========================================================================
Program: Visualization Toolkit
Module: vtkPExtractHistogram2D.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 2009 Sandia Corporation.
Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
#include "vtkPExtractHistogram2D.h"
#include "vtkDataArray.h"
#include "vtkIdTypeArray.h"
#include "vtkIdList.h"
#include "vtkImageData.h"
#include "vtkMultiBlockDataSet.h"
#include "vtkMultiProcessController.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkTable.h"
vtkStandardNewMacro(vtkPExtractHistogram2D);
vtkCxxSetObjectMacro(vtkPExtractHistogram2D, Controller, vtkMultiProcessController);
//------------------------------------------------------------------------------
vtkPExtractHistogram2D::vtkPExtractHistogram2D()
{
this->Controller = 0;
this->SetController(vtkMultiProcessController::GetGlobalController());
}
//------------------------------------------------------------------------------
vtkPExtractHistogram2D::~vtkPExtractHistogram2D()
{
this->SetController(0);
}
//------------------------------------------------------------------------------
void vtkPExtractHistogram2D::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "Controller: " << this->Controller << endl;
}
//------------------------------------------------------------------------------
void vtkPExtractHistogram2D::Learn(vtkTable *inData,
vtkTable* inParameters,
vtkMultiBlockDataSet *outMeta)
{
vtkTable* primaryTab = vtkTable::SafeDownCast( outMeta->GetBlock( 0 ) );
if ( ! primaryTab )
{
return;
}
vtkImageData* outImage = vtkImageData::SafeDownCast(this->GetOutputDataObject(vtkPExtractHistogram2D::HISTOGRAM_IMAGE));
// have all of the nodes compute their histograms
this->Superclass::Learn(inData,inParameters,outMeta);
if (!this->Controller || this->Controller->GetNumberOfProcesses() <= 1)
{
// Nothing to do for single process.
return;
}
// Now we need to collect and reduce data from all nodes on the root.
vtkCommunicator* comm = this->Controller->GetCommunicator();
if (!comm)
{
vtkErrorMacro("vtkCommunicator is needed.");
return;
}
int myid = this->Controller->GetLocalProcessId();
vtkImageData* reducedOutImage = vtkImageData::New();
reducedOutImage->DeepCopy(outImage);
vtkDataArray* myArray = outImage->GetPointData()->GetScalars();
vtkDataArray* recvArray = reducedOutImage->GetPointData()->GetScalars();;
// this sums up all of the images and distributes them to
// every node
if (!comm->AllReduce(myArray,recvArray,vtkCommunicator::SUM_OP))
{
vtkErrorMacro(<< myid << ": Reduce failed!");
reducedOutImage->Delete();
return;
}
outImage->DeepCopy(reducedOutImage);
// update the maximum bin count
for (int i=0; i<recvArray->GetNumberOfTuples(); i++)
{
if (this->MaximumBinCount < recvArray->GetTuple1(i))
this->MaximumBinCount = (long unsigned)recvArray->GetTuple1(i);
}
reducedOutImage->Delete();
primaryTab->Initialize();
primaryTab->AddColumn(outImage->GetPointData()->GetScalars());
}
int vtkPExtractHistogram2D::ComputeBinExtents(vtkDataArray* col1, vtkDataArray* col2)
{
if (!this->Controller || this->Controller->GetNumberOfProcesses() <= 1 ||
this->UseCustomHistogramExtents)
{
// Nothing extra to do for single process.
return this->Superclass::ComputeBinExtents(col1,col2);
}
vtkCommunicator* comm = this->Controller->GetCommunicator();
if (!comm)
{
vtkErrorMacro("vtkCommunicator is needed.");
return false;
}
// have everyone compute their own bin extents
double myRange[4] = {VTK_DOUBLE_MAX,VTK_DOUBLE_MIN,VTK_DOUBLE_MAX,VTK_DOUBLE_MIN};
double allRange[4] = {VTK_DOUBLE_MAX,VTK_DOUBLE_MIN,VTK_DOUBLE_MAX,VTK_DOUBLE_MIN};
if (this->Superclass::ComputeBinExtents(col1,col2))
{
double *r = this->GetHistogramExtents();
myRange[0] = r[0];
myRange[1] = r[1];
myRange[2] = r[2];
myRange[3] = r[3];
}
int myid = this->Controller->GetLocalProcessId();
double *r = this->GetHistogramExtents();
if (!comm->AllReduce(myRange,allRange,1,vtkCommunicator::MIN_OP) ||
!comm->AllReduce(myRange+1,allRange+1,1,vtkCommunicator::MAX_OP) ||
!comm->AllReduce(myRange+2,allRange+2,1,vtkCommunicator::MIN_OP) ||
!comm->AllReduce(myRange+3,allRange+3,1,vtkCommunicator::MAX_OP))
{
vtkErrorMacro(<< myid << ": Reduce failed!");
return 0;
}
r[0] = allRange[0];
r[1] = allRange[1];
r[2] = allRange[2];
r[3] = allRange[3];
return 1;
}
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