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/*=========================================================================
Program: Visualization Toolkit
Module: vtkIdFilter.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 "vtkIdFilter.h"
#include "vtkCellData.h"
#include "vtkDataSet.h"
#include "vtkDataSet.h"
#include "vtkIdTypeArray.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
vtkStandardNewMacro(vtkIdFilter);
// Construct object with PointIds and CellIds on; and ids being generated
// as scalars.
vtkIdFilter::vtkIdFilter()
{
this->PointIds = 1;
this->CellIds = 1;
this->FieldData = 0;
this->IdsArrayName = NULL;
this->SetIdsArrayName("vtkIdFilter_Ids");
}
vtkIdFilter::~vtkIdFilter()
{
if (this->IdsArrayName)
{
delete []IdsArrayName;
}
}
//
// Map ids into attribute data
//
int vtkIdFilter::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
vtkDataSet *input = vtkDataSet::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkDataSet *output = vtkDataSet::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkIdType numPts, numCells, id;
vtkIdTypeArray *ptIds;
vtkIdTypeArray *cellIds;
vtkPointData *inPD=input->GetPointData(), *outPD=output->GetPointData();
vtkCellData *inCD=input->GetCellData(), *outCD=output->GetCellData();
// Initialize
//
vtkDebugMacro(<<"Generating ids!");
// First, copy the input to the output as a starting point
output->CopyStructure( input );
numPts = input->GetNumberOfPoints();
numCells = input->GetNumberOfCells();
// Loop over points (if requested) and generate ids
//
if ( this->PointIds && numPts > 0 )
{
ptIds = vtkIdTypeArray::New();
ptIds->SetNumberOfValues(numPts);
for (id=0; id < numPts; id++)
{
ptIds->SetValue(id, id);
}
ptIds->SetName(this->IdsArrayName);
if ( ! this->FieldData )
{
int idx = outPD->AddArray(ptIds);
outPD->SetActiveAttribute(idx, vtkDataSetAttributes::SCALARS);
outPD->CopyScalarsOff();
}
else
{
outPD->AddArray(ptIds);
outPD->CopyFieldOff(this->IdsArrayName);
}
ptIds->Delete();
}
// Loop over cells (if requested) and generate ids
//
if ( this->CellIds && numCells > 0 )
{
cellIds = vtkIdTypeArray::New();
cellIds->SetNumberOfValues(numCells);
for (id=0; id < numCells; id++)
{
cellIds->SetValue(id, id);
}
cellIds->SetName(this->IdsArrayName);
if ( ! this->FieldData )
{
int idx = outCD->AddArray(cellIds);
outCD->SetActiveAttribute(idx, vtkDataSetAttributes::SCALARS);
outCD->CopyScalarsOff();
}
else
{
outCD->AddArray(cellIds);
outCD->CopyFieldOff(this->IdsArrayName);
}
cellIds->Delete();
}
outPD->PassData(inPD);
outCD->PassData(inCD);
return 1;
}
void vtkIdFilter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "Point Ids: " << (this->PointIds ? "On\n" : "Off\n");
os << indent << "Cell Ids: " << (this->CellIds ? "On\n" : "Off\n");
os << indent << "Field Data: " << (this->FieldData ? "On\n" : "Off\n");
os << indent << "IdsArrayName: " << (this->IdsArrayName ? this->IdsArrayName
: "(none)") << "\n";
}
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