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729 lines
23 KiB
729 lines
23 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkXMLDataReader.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 "vtkXMLDataReader.h"
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#include "vtkCallbackCommand.h"
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#include "vtkCellData.h"
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#include "vtkDataArraySelection.h"
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#include "vtkDataSet.h"
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#include "vtkPointData.h"
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#include "vtkXMLDataElement.h"
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#include "vtkXMLDataParser.h"
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#include "vtkInformationVector.h"
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#include "vtkInformation.h"
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#include "vtkExecutive.h"
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#include "assert.h"
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vtkCxxRevisionMacro(vtkXMLDataReader, "$Revision: 1.25.6.1 $");
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//----------------------------------------------------------------------------
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vtkXMLDataReader::vtkXMLDataReader()
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{
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this->NumberOfPieces = 0;
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this->PointDataElements = 0;
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this->CellDataElements = 0;
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this->Piece = 0;
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this->NumberOfPointArrays = 0;
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this->NumberOfCellArrays = 0;
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this->InReadData = 0;
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// Setup a callback for when the XMLParser's data reading routines
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// report progress.
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this->DataProgressObserver = vtkCallbackCommand::New();
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this->DataProgressObserver->SetCallback(&vtkXMLDataReader::DataProgressCallbackFunction);
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this->DataProgressObserver->SetClientData(this);
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this->PointDataTimeStep = NULL;
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this->PointDataOffset = NULL;
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this->CellDataTimeStep = NULL;
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this->CellDataOffset = NULL;
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}
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//----------------------------------------------------------------------------
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vtkXMLDataReader::~vtkXMLDataReader()
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{
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if(this->XMLParser)
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{
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this->DestroyXMLParser();
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}
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if(this->NumberOfPieces)
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{
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this->DestroyPieces();
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}
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this->DataProgressObserver->Delete();
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if( this->NumberOfPointArrays )
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{
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delete[] this->PointDataTimeStep;
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delete[] this->PointDataOffset;
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}
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if( this->NumberOfCellArrays )
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{
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delete[] this->CellDataTimeStep;
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delete[] this->CellDataOffset;
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}
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}
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//----------------------------------------------------------------------------
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void vtkXMLDataReader::PrintSelf(ostream& os, vtkIndent indent)
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{
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this->Superclass::PrintSelf(os, indent);
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}
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//----------------------------------------------------------------------------
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void vtkXMLDataReader::CreateXMLParser()
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{
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this->Superclass::CreateXMLParser();
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this->XMLParser->AddObserver(vtkCommand::ProgressEvent,
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this->DataProgressObserver);
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}
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//----------------------------------------------------------------------------
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void vtkXMLDataReader::DestroyXMLParser()
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{
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if(this->XMLParser)
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{
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this->XMLParser->RemoveObserver(this->DataProgressObserver);
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}
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this->Superclass::DestroyXMLParser();
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}
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//----------------------------------------------------------------------------
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// Note that any changes (add or removing information) made to this method
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// should be replicated in CopyOutputInformation
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void vtkXMLDataReader::SetupOutputInformation(vtkInformation *outInfo)
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{
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if (this->InformationError)
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{
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vtkErrorMacro("Should not still be processing output information if have set InformationError");
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return;
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}
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// Initialize DataArraySelections to enable all that are present
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this->SetDataArraySelections(this->PointDataElements[0], this->PointDataArraySelection);
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this->SetDataArraySelections(this->CellDataElements[0], this->CellDataArraySelection);
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// Setup the Field Information for PointData. We only need the
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// information from one piece because all pieces have the same set of arrays.
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vtkInformationVector *infoVector = NULL;
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if (!this->SetFieldDataInfo(this->PointDataElements[0],
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vtkDataObject::FIELD_ASSOCIATION_POINTS, this->GetNumberOfPoints(), infoVector))
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{
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return;
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}
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if (infoVector)
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{
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outInfo->Set(vtkDataObject::POINT_DATA_VECTOR(), infoVector);
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infoVector->Delete();
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}
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// now the Cell data
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infoVector = NULL;
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if (!this->SetFieldDataInfo(this->CellDataElements[0],
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vtkDataObject::FIELD_ASSOCIATION_CELLS, this->GetNumberOfCells(), infoVector))
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{
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return;
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}
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if (infoVector)
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{
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outInfo->Set(vtkDataObject::CELL_DATA_VECTOR(), infoVector);
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infoVector->Delete();
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}
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}
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//----------------------------------------------------------------------------
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void vtkXMLDataReader::CopyOutputInformation(vtkInformation *outInfo, int port)
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{
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vtkInformation *localInfo = this->GetExecutive()->GetOutputInformation( port );
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if ( localInfo->Has(vtkDataObject::POINT_DATA_VECTOR()) )
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{
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outInfo->CopyEntry( localInfo, vtkDataObject::POINT_DATA_VECTOR() );
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}
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if ( localInfo->Has(vtkDataObject::CELL_DATA_VECTOR()) )
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{
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outInfo->CopyEntry( localInfo, vtkDataObject::CELL_DATA_VECTOR() );
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}
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}
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//----------------------------------------------------------------------------
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int vtkXMLDataReader::ReadPrimaryElement(vtkXMLDataElement* ePrimary)
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{
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if(!this->Superclass::ReadPrimaryElement(ePrimary))
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{
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return 0;
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}
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// Count the number of pieces in the file.
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int numNested = ePrimary->GetNumberOfNestedElements();
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int numPieces = 0;
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int i;
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for(i=0; i < numNested; ++i)
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{
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vtkXMLDataElement* eNested = ePrimary->GetNestedElement(i);
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if(strcmp(eNested->GetName(), "Piece") == 0)
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{
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++numPieces;
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}
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}
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// Now read each piece. If no "Piece" elements were found, assume
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// the primary element itself is a single piece.
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if(numPieces)
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{
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this->SetupPieces(numPieces);
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int piece = 0;
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for(i=0;i < numNested; ++i)
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{
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vtkXMLDataElement* eNested = ePrimary->GetNestedElement(i);
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if(strcmp(eNested->GetName(), "Piece") == 0)
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{
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if(!this->ReadPiece(eNested, piece++))
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{
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return 0;
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}
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}
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}
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}
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else
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{
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this->SetupPieces(1);
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if(!this->ReadPiece(ePrimary, 0))
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{
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return 0;
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}
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}
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return 1;
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}
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//----------------------------------------------------------------------------
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void vtkXMLDataReader::SetupPieces(int numPieces)
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{
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if(this->NumberOfPieces)
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{
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this->DestroyPieces();
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}
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this->NumberOfPieces = numPieces;
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if(numPieces > 0)
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{
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this->PointDataElements = new vtkXMLDataElement*[numPieces];
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this->CellDataElements = new vtkXMLDataElement*[numPieces];
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}
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int i;
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for(i=0;i < this->NumberOfPieces;++i)
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{
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this->PointDataElements[i] = 0;
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this->CellDataElements[i] = 0;
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}
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}
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//----------------------------------------------------------------------------
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void vtkXMLDataReader::DestroyPieces()
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{
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delete [] this->PointDataElements;
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delete [] this->CellDataElements;
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this->PointDataElements = 0;
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this->CellDataElements = 0;
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this->NumberOfPieces = 0;
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}
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//----------------------------------------------------------------------------
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void vtkXMLDataReader::SetupOutputData()
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{
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this->Superclass::SetupOutputData();
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vtkPointData* pointData = this->GetOutputAsDataSet(0)->GetPointData();
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vtkCellData* cellData = this->GetOutputAsDataSet(0)->GetCellData();
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// Get the size of the output arrays.
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unsigned long pointTuples = this->GetNumberOfPoints();
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unsigned long cellTuples = this->GetNumberOfCells();
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// Allocate the arrays in the output. We only need the information
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// from one piece because all pieces have the same set of arrays.
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vtkXMLDataElement* ePointData = this->PointDataElements[0];
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vtkXMLDataElement* eCellData = this->CellDataElements[0];
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this->NumberOfPointArrays = 0;
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if (ePointData)
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{
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for (int i = 0; i < ePointData->GetNumberOfNestedElements(); i++)
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{
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vtkXMLDataElement* eNested = ePointData->GetNestedElement(i);
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if (this->PointDataArrayIsEnabled(eNested) &&
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!pointData->HasArray(eNested->GetAttribute("Name")))
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{
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this->NumberOfPointArrays++;
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vtkDataArray* array = this->CreateDataArray(eNested);
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if (array)
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{
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array->SetNumberOfTuples(pointTuples);
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pointData->AddArray(array);
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array->Delete();
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}
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else
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{
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this->DataError = 1;
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}
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}
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}
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}
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assert( this->NumberOfPointArrays == this->PointDataArraySelection->GetNumberOfArraysEnabled());
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this->NumberOfCellArrays = 0;
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if (eCellData)
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{
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for (int i = 0; i < eCellData->GetNumberOfNestedElements(); i++)
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{
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vtkXMLDataElement* eNested = eCellData->GetNestedElement(i);
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if (this->CellDataArrayIsEnabled(eNested) &&
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!cellData->HasArray(eNested->GetAttribute("Name")))
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{
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this->NumberOfCellArrays++;
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vtkDataArray* array = this->CreateDataArray(eNested);
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if (array)
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{
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array->SetNumberOfTuples(cellTuples);
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cellData->AddArray(array);
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array->Delete();
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}
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else
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{
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this->DataError = 1;
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}
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}
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}
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}
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assert( this->NumberOfCellArrays == this->CellDataArraySelection->GetNumberOfArraysEnabled());
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// Setup attribute indices for the point data and cell data.
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this->ReadAttributeIndices(ePointData, pointData);
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this->ReadAttributeIndices(eCellData, cellData);
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// Since NumberOfCellArrays and NumberOfPointArrays are valid
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// lets allocate PointDataTimeStep, CellDataTimeStep, PointDataOffset
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// CellDataOffset
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if( this->NumberOfPointArrays )
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{
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this->PointDataTimeStep = new int[this->NumberOfPointArrays];
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this->PointDataOffset = new unsigned long[this->NumberOfPointArrays];
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for(int i=0; i<this->NumberOfPointArrays;i++)
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{
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this->PointDataTimeStep[i] = -1;
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this->PointDataOffset[i] = (unsigned long)-1;
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}
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}
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if( this->NumberOfCellArrays )
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{
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this->CellDataTimeStep = new int[this->NumberOfCellArrays];
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this->CellDataOffset = new unsigned long[this->NumberOfCellArrays];
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for(int i=0; i<this->NumberOfCellArrays;i++)
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{
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this->CellDataTimeStep[i] = -1;
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this->CellDataOffset[i] = (unsigned long)-1;
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}
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}
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}
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//----------------------------------------------------------------------------
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int vtkXMLDataReader::ReadPiece(vtkXMLDataElement* ePiece, int piece)
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{
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this->Piece = piece;
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return this->ReadPiece(ePiece);
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}
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//----------------------------------------------------------------------------
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int vtkXMLDataReader::ReadPiece(vtkXMLDataElement* ePiece)
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{
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// Find the PointData and CellData in the piece.
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int i;
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for(i=0; i < ePiece->GetNumberOfNestedElements(); ++i)
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{
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vtkXMLDataElement* eNested = ePiece->GetNestedElement(i);
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if(strcmp(eNested->GetName(), "PointData") == 0)
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{
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this->PointDataElements[this->Piece] = eNested;
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}
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else if(strcmp(eNested->GetName(), "CellData") == 0)
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{
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this->CellDataElements[this->Piece] = eNested;
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}
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}
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return 1;
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}
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//----------------------------------------------------------------------------
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int vtkXMLDataReader::ReadPieceData(int piece)
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{
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this->Piece = piece;
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return this->ReadPieceData();
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}
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//----------------------------------------------------------------------------
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int vtkXMLDataReader::ReadPieceData()
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{
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vtkPointData* pointData = this->GetOutputAsDataSet(0)->GetPointData();
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vtkCellData* cellData = this->GetOutputAsDataSet(0)->GetCellData();
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vtkXMLDataElement* ePointData = this->PointDataElements[this->Piece];
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vtkXMLDataElement* eCellData = this->CellDataElements[this->Piece];
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// Split current progress range over number of arrays. This assumes
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// that each array contributes approximately the same amount of data
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// within this piece.
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float progressRange[2] = {0,0};
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int currentArray=0;
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int numArrays = this->NumberOfPointArrays + this->NumberOfCellArrays;
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this->GetProgressRange(progressRange);
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// Read the data for this piece from each array.
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int i;
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if(ePointData)
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{
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int a=0;
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for(i=0;(i < ePointData->GetNumberOfNestedElements() &&
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!this->AbortExecute);++i)
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{
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vtkXMLDataElement* eNested = ePointData->GetNestedElement(i);
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if (this->PointDataArrayIsEnabled(eNested))
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{
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if( strcmp(eNested->GetName(), "DataArray") != 0 )
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{
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vtkErrorMacro("Invalid DataArray");
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this->DataError = 1;
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return 0;
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}
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int needToRead = this->PointDataNeedToReadTimeStep(eNested);
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if( needToRead )
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{
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// Set the range of progress for this array.
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this->SetProgressRange(progressRange, currentArray++, numArrays);
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// Read the array.
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if(!this->ReadArrayForPoints(eNested, pointData->GetArray(a++)))
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{
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vtkErrorMacro("Cannot read point data array \""
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<< pointData->GetArray(a-1)->GetName() << "\" from "
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<< ePointData->GetName() << " in piece " << this->Piece
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<< ". The data array in the element may be too short.");
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return 0;
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}
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}
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}
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}
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}
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if(eCellData)
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{
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int a=0;
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for(i=0;(i < eCellData->GetNumberOfNestedElements() &&
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!this->AbortExecute);++i)
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{
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vtkXMLDataElement* eNested = eCellData->GetNestedElement(i);
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if (this->CellDataArrayIsEnabled(eNested))
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{
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if( strcmp(eNested->GetName(), "DataArray") != 0 )
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{
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this->DataError = 1;
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vtkErrorMacro("Invalid DataArray" );
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return 0;
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}
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int needToRead = this->CellDataNeedToReadTimeStep(eNested);
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if( needToRead )
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{
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// Set the range of progress for this array.
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this->SetProgressRange(progressRange, currentArray++, numArrays);
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// Read the array.
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if(!this->ReadArrayForCells(eNested, cellData->GetArray(a++)))
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{
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vtkErrorMacro("Cannot read cell data array \""
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<< cellData->GetArray(a-1)->GetName() << "\" from "
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<< ePointData->GetName() << " in piece " << this->Piece
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<< ". The data array in the element may be too short.");
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return 0;
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}
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}
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}
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}
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}
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if(this->AbortExecute)
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{
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return 0;
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}
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return 1;
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}
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//----------------------------------------------------------------------------
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void vtkXMLDataReader::ReadXMLData()
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{
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// Let superclasses read data. This also allocates output data.
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this->Superclass::ReadXMLData();
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if (this->FieldDataElement) // read the field data information
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{
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int i, numTuples;
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vtkFieldData *fieldData = this->GetOutputDataObject(0)->GetFieldData();
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for(i=0; i < this->FieldDataElement->GetNumberOfNestedElements() &&
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!this->AbortExecute; i++)
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{
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vtkXMLDataElement* eNested = this->FieldDataElement->GetNestedElement(i);
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vtkDataArray* array = this->CreateDataArray(eNested);
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if (array)
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{
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if(eNested->GetScalarAttribute("NumberOfTuples", numTuples))
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{
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array->SetNumberOfTuples(numTuples);
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}
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else
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{
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numTuples = 0;
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}
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fieldData->AddArray(array);
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array->Delete();
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if (!this->ReadData(eNested, array->GetVoidPointer(0),
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array->GetDataType(), 0, numTuples*array->GetNumberOfComponents()))
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{
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this->DataError = 1;
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}
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}
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}
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}
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}
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//----------------------------------------------------------------------------
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int vtkXMLDataReader::ReadArrayForPoints(vtkXMLDataElement* da,
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vtkDataArray* outArray)
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{
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vtkIdType components = outArray->GetNumberOfComponents();
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vtkIdType numberOfTuples = this->GetNumberOfPoints();
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return this->ReadData(da, outArray->GetVoidPointer(0),
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outArray->GetDataType(),
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0, numberOfTuples*components);
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}
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//----------------------------------------------------------------------------
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int vtkXMLDataReader::ReadArrayForCells(vtkXMLDataElement* da,
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vtkDataArray* outArray)
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{
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vtkIdType components = outArray->GetNumberOfComponents();
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vtkIdType numberOfTuples = this->GetNumberOfCells();
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return this->ReadData(da, outArray->GetVoidPointer(0),
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outArray->GetDataType(),
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0, numberOfTuples*components);
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}
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//----------------------------------------------------------------------------
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int vtkXMLDataReader::ReadData(vtkXMLDataElement* da, void* data, int wordType,
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vtkIdType startWord, vtkIdType numWords)
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|
{
|
|
// Skip real read if aborting.
|
|
if(this->AbortExecute)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
this->InReadData = 1;
|
|
vtkIdType num = numWords;
|
|
int result;
|
|
if(da->GetAttribute("offset"))
|
|
{
|
|
int offset = 0;
|
|
da->GetScalarAttribute("offset", offset);
|
|
result = (this->XMLParser->ReadAppendedData(offset, data, startWord,
|
|
numWords, wordType) == num);
|
|
}
|
|
else
|
|
{
|
|
int isAscii = 1;
|
|
const char* format = da->GetAttribute("format");
|
|
if(format && (strcmp(format, "binary") == 0))
|
|
{
|
|
isAscii = 0;
|
|
}
|
|
result = (this->XMLParser->ReadInlineData(da, isAscii, data,
|
|
startWord, numWords, wordType)
|
|
== num);
|
|
}
|
|
this->InReadData = 0;
|
|
return result;
|
|
}
|
|
|
|
//----------------------------------------------------------------------------
|
|
void vtkXMLDataReader::DataProgressCallbackFunction(vtkObject*, unsigned long,
|
|
void* clientdata, void*)
|
|
{
|
|
reinterpret_cast<vtkXMLDataReader*>(clientdata)->DataProgressCallback();
|
|
}
|
|
|
|
//----------------------------------------------------------------------------
|
|
void vtkXMLDataReader::DataProgressCallback()
|
|
{
|
|
if(this->InReadData)
|
|
{
|
|
float width = this->ProgressRange[1]-this->ProgressRange[0];
|
|
float dataProgress = this->XMLParser->GetProgress();
|
|
float progress = this->ProgressRange[0] + dataProgress*width;
|
|
this->UpdateProgressDiscrete(progress);
|
|
if(this->AbortExecute)
|
|
{
|
|
this->XMLParser->SetAbort(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------------
|
|
int vtkXMLDataReader::PointDataNeedToReadTimeStep(vtkXMLDataElement *eNested)
|
|
{
|
|
// First thing need to find the id of this dataarray from its name:
|
|
const char* name = eNested->GetAttribute("Name");
|
|
int idx = this->PointDataArraySelection->GetEnabledArrayIndex(name);
|
|
|
|
// Easy case no timestep:
|
|
int numTimeSteps = eNested->GetVectorAttribute("TimeStep",
|
|
this->NumberOfTimeSteps, this->TimeSteps);
|
|
if( !(numTimeSteps <= this->NumberOfTimeSteps) )
|
|
{
|
|
vtkErrorMacro("Invalid TimeStep specification");
|
|
this->DataError = 1;
|
|
return 0;
|
|
}
|
|
if (!numTimeSteps && !this->NumberOfTimeSteps)
|
|
{
|
|
assert( this->PointDataTimeStep[idx] == -1 ); //No timestep in this file
|
|
return 1;
|
|
}
|
|
// else TimeStep was specified but no TimeValues associated were found
|
|
assert( this->NumberOfTimeSteps );
|
|
|
|
// case numTimeSteps > 1
|
|
int isCurrentTimeInArray =
|
|
vtkXMLReader::IsTimeStepInArray(this->CurrentTimeStep, this->TimeSteps, numTimeSteps);
|
|
if( numTimeSteps && !isCurrentTimeInArray)
|
|
{
|
|
return 0;
|
|
}
|
|
// we know that time steps are specified and that CurrentTimeStep is in the array
|
|
// we need to figure out if we need to read the array or if it was forwarded
|
|
// Need to check the current 'offset'
|
|
unsigned long offset;
|
|
if( eNested->GetScalarAttribute("offset", offset) )
|
|
{
|
|
if( this->PointDataOffset[idx] != offset )
|
|
{
|
|
// save the pointsOffset
|
|
assert( this->PointDataTimeStep[idx] == -1 ); //cannot have mixture of binary and appended
|
|
this->PointDataOffset[idx] = offset;
|
|
return 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// No offset is specified this is a binary file
|
|
// First thing to check if numTimeSteps == 0:
|
|
if( !numTimeSteps && this->NumberOfTimeSteps && this->PointDataTimeStep[idx] == -1)
|
|
{
|
|
// Update last PointsTimeStep read
|
|
this->PointDataTimeStep[idx] = this->CurrentTimeStep;
|
|
return 1;
|
|
}
|
|
int isLastTimeInArray = vtkXMLReader::IsTimeStepInArray(
|
|
this->PointDataTimeStep[idx], this->TimeSteps, numTimeSteps);
|
|
// If no time is specified or if time is specified and match then read
|
|
if (isCurrentTimeInArray && !isLastTimeInArray)
|
|
{
|
|
// CurrentTimeStep is in TimeSteps but Last is not := need to read
|
|
// Update last PointsTimeStep read
|
|
this->PointDataTimeStep[idx] = this->CurrentTimeStep;
|
|
return 1;
|
|
}
|
|
}
|
|
// all other cases we don't need to read:
|
|
return 0;
|
|
}
|
|
|
|
//----------------------------------------------------------------------------
|
|
int vtkXMLDataReader::CellDataNeedToReadTimeStep(vtkXMLDataElement *eNested)
|
|
{
|
|
// First thing need to find the id of this dataarray from its name:
|
|
const char* name = eNested->GetAttribute("Name");
|
|
int idx = this->CellDataArraySelection->GetEnabledArrayIndex(name);
|
|
|
|
// Easy case no timestep:
|
|
int numTimeSteps = eNested->GetVectorAttribute("TimeStep",
|
|
this->NumberOfTimeSteps, this->TimeSteps);
|
|
if( !(numTimeSteps <= this->NumberOfTimeSteps) )
|
|
{
|
|
vtkErrorMacro( "Invalid TimeSteps specification");
|
|
this->DataError = 1;
|
|
return 0;
|
|
}
|
|
if (!numTimeSteps && !this->NumberOfTimeSteps)
|
|
{
|
|
assert( this->CellDataTimeStep[idx] == -1 ); //No timestep in this file
|
|
return 1;
|
|
}
|
|
// else TimeStep was specified but no TimeValues associated were found
|
|
assert( this->NumberOfTimeSteps );
|
|
|
|
// case numTimeSteps > 1
|
|
int isCurrentTimeInArray =
|
|
vtkXMLReader::IsTimeStepInArray(this->CurrentTimeStep, this->TimeSteps, numTimeSteps);
|
|
if( numTimeSteps && !isCurrentTimeInArray)
|
|
{
|
|
return 0;
|
|
}
|
|
// we know that time steps are specified and that CurrentTimeStep is in the array
|
|
// we need to figure out if we need to read the array or if it was forwarded
|
|
// Need to check the current 'offset'
|
|
unsigned long offset;
|
|
if( eNested->GetScalarAttribute("offset", offset) )
|
|
{
|
|
if( this->CellDataOffset[idx] != offset )
|
|
{
|
|
// save the pointsOffset
|
|
assert( this->CellDataTimeStep[idx] == -1 ); //cannot have mixture of binary and appended
|
|
this->CellDataOffset[idx] = offset;
|
|
return 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// No offset is specified this is a binary file
|
|
// First thing to check if numTimeSteps == 0:
|
|
if( !numTimeSteps && this->NumberOfTimeSteps && this->CellDataTimeStep[idx] == -1)
|
|
{
|
|
// Update last CellDataTimeStep read
|
|
this->CellDataTimeStep[idx] = this->CurrentTimeStep;
|
|
return 1;
|
|
}
|
|
int isLastTimeInArray = vtkXMLReader::IsTimeStepInArray(
|
|
this->CellDataTimeStep[idx], this->TimeSteps, numTimeSteps);
|
|
// If no time is specified or if time is specified and match then read
|
|
if (isCurrentTimeInArray && !isLastTimeInArray)
|
|
{
|
|
// CurrentTimeStep is in TimeSteps but Last is not := need to read
|
|
// Update last CellsTimeStep read
|
|
this->CellDataTimeStep[idx] = this->CurrentTimeStep;
|
|
return 1;
|
|
}
|
|
}
|
|
// all other cases we don't need to read:
|
|
return 0;
|
|
}
|
|
|