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123 lines
3.6 KiB
123 lines
3.6 KiB
2 years ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkPointDataToCellData.cxx,v $
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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#include "vtkPointDataToCellData.h"
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#include "vtkCellData.h"
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#include "vtkDataSet.h"
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#include "vtkIdList.h"
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#include "vtkInformation.h"
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#include "vtkInformationVector.h"
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#include "vtkObjectFactory.h"
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#include "vtkPointData.h"
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vtkCxxRevisionMacro(vtkPointDataToCellData, "$Revision: 1.30 $");
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vtkStandardNewMacro(vtkPointDataToCellData);
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//----------------------------------------------------------------------------
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// Instantiate object so that point data is not passed to output.
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vtkPointDataToCellData::vtkPointDataToCellData()
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{
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this->PassPointData = 0;
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}
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//----------------------------------------------------------------------------
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int vtkPointDataToCellData::RequestData(
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vtkInformation*,
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vtkInformationVector** inputVector,
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vtkInformationVector* outputVector)
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{
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vtkInformation* info = outputVector->GetInformationObject(0);
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vtkDataSet *output = vtkDataSet::SafeDownCast(
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info->Get(vtkDataObject::DATA_OBJECT()));
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vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
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vtkDataSet *input = vtkDataSet::SafeDownCast(
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inInfo->Get(vtkDataObject::DATA_OBJECT()));
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vtkIdType cellId, ptId;
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vtkIdType numCells, numPts;
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vtkPointData *inPD=input->GetPointData();
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vtkCellData *outCD=output->GetCellData();
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int maxCellSize=input->GetMaxCellSize();
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vtkIdList *cellPts;
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double weight;
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double *weights;
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vtkDebugMacro(<<"Mapping point data to cell data");
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// First, copy the input to the output as a starting point
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output->CopyStructure( input );
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if ( (numCells=input->GetNumberOfCells()) < 1 )
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{
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vtkDebugMacro(<<"No input cells!");
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return 1;
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}
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weights=new double[maxCellSize];
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cellPts = vtkIdList::New();
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cellPts->Allocate(maxCellSize);
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// Pass the cell data first. The fields and attributes
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// which also exist in the point data of the input will
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// be over-written during CopyAllocate
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output->GetCellData()->PassData(input->GetCellData());
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// notice that inPD and outCD are vtkPointData and vtkCellData; respectively.
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// It's weird, but it works.
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outCD->CopyAllocate(inPD,numCells);
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int abort=0;
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vtkIdType progressInterval=numCells/20 + 1;
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for (cellId=0; cellId < numCells && !abort; cellId++)
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{
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if ( !(cellId % progressInterval) )
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{
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this->UpdateProgress((double)cellId/numCells);
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abort = GetAbortExecute();
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}
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input->GetCellPoints(cellId, cellPts);
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numPts = cellPts->GetNumberOfIds();
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if ( numPts > 0 )
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{
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weight = 1.0 / numPts;
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for (ptId=0; ptId < numPts; ptId++)
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{
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weights[ptId] = weight;
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}
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outCD->InterpolatePoint(inPD, cellId, cellPts, weights);
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}
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}
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if ( this->PassPointData )
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{
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output->GetPointData()->PassData(input->GetPointData());
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}
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cellPts->Delete();
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delete [] weights;
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return 1;
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}
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//----------------------------------------------------------------------------
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void vtkPointDataToCellData::PrintSelf(ostream& os, vtkIndent indent)
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{
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this->Superclass::PrintSelf(os,indent);
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os << indent << "Pass Point Data: " << (this->PassPointData ? "On\n" : "Off\n");
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}
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