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115 lines
3.8 KiB
C
115 lines
3.8 KiB
C
3 weeks ago
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/*=========================================================================
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Program: ParaView
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Module: vtkXMLCompositeDataReader.h
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Copyright (c) Kitware, Inc.
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All rights reserved.
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See Copyright.txt or http://www.paraview.org/HTML/Copyright.html 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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/**
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* @class vtkXMLCompositeDataReader
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* @brief Reader for multi-group datasets
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*
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* vtkXMLCompositeDataReader reads the VTK XML multi-group data file
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* format. XML multi-group data files are meta-files that point to a list
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* of serial VTK XML files. When reading in parallel, it will distribute
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* sub-blocks among processor. If the number of sub-blocks is less than
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* the number of processors, some processors will not have any sub-blocks
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* for that group. If the number of sub-blocks is larger than the
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* number of processors, each processor will possibly have more than
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* 1 sub-block.
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*/
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#ifndef vtkXMLCompositeDataReader_h
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#define vtkXMLCompositeDataReader_h
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#include "vtkIOXMLModule.h" // For export macro
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#include "vtkXMLReader.h"
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class vtkCompositeDataSet;
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class vtkInformationIntegerKey;
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class vtkInformationIntegerVectorKey;
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struct vtkXMLCompositeDataReaderInternals;
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class VTKIOXML_EXPORT vtkXMLCompositeDataReader : public vtkXMLReader
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{
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public:
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vtkTypeMacro(vtkXMLCompositeDataReader,vtkXMLReader);
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void PrintSelf(ostream& os, vtkIndent indent);
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//@{
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/**
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* Get the output data object for a port on this algorithm.
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*/
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vtkCompositeDataSet* GetOutput();
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vtkCompositeDataSet* GetOutput(int);
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//@}
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protected:
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vtkXMLCompositeDataReader();
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~vtkXMLCompositeDataReader();
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// Get the name of the data set being read.
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virtual const char* GetDataSetName();
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// Returns the primary element pass to ReadPrimaryElement().
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vtkXMLDataElement* GetPrimaryElement();
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virtual void ReadXMLData();
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virtual int ReadPrimaryElement(vtkXMLDataElement* ePrimary);
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// Setup the output with no data available. Used in error cases.
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virtual void SetupEmptyOutput();
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virtual int FillOutputPortInformation(int, vtkInformation* info);
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// Create a default executive.
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virtual vtkExecutive* CreateDefaultExecutive();
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vtkXMLReader* GetReaderOfType(const char* type);
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virtual int RequestInformation(vtkInformation*,
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vtkInformationVector**,
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vtkInformationVector*);
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// Adds a child data object to the composite parent. childXML is the XML for
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// the child data object need to obtain certain meta-data about the child.
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void AddChild(vtkCompositeDataSet* parent,
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vtkDataObject* child, vtkXMLDataElement* childXML);
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// Read the XML element for the subtree of a the composite dataset.
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// dataSetIndex is used to rank the leaf nodes in an inorder traversal.
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virtual void ReadComposite(vtkXMLDataElement* element,
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vtkCompositeDataSet* composite, const char* filePath,
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unsigned int &dataSetIndex)=0;
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// Read the vtkDataSet (a leaf) in the composite dataset.
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virtual vtkDataSet* ReadDataset(vtkXMLDataElement* xmlElem, const char* filePath);
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// Counts "DataSet" elements in the subtree.
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unsigned int CountLeaves(vtkXMLDataElement* elem);
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/**
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* Given the inorder index for a leaf node, this method tells if the current
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* process should read the dataset.
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*/
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int ShouldReadDataSet(unsigned int datasetIndex);
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private:
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vtkXMLCompositeDataReader(const vtkXMLCompositeDataReader&) VTK_DELETE_FUNCTION;
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void operator=(const vtkXMLCompositeDataReader&) VTK_DELETE_FUNCTION;
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vtkXMLCompositeDataReaderInternals* Internal;
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};
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#endif
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