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237 lines
7.9 KiB
C++
237 lines
7.9 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkEnSightGoldBinaryReader.h
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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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/**
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* @class vtkEnSightGoldBinaryReader
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* @brief class to read binary EnSight Gold files
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*
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* vtkEnSightGoldBinaryReader is a class to read EnSight Gold files into vtk.
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* Because the different parts of the EnSight data can be of various data
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* types, this reader produces multiple outputs, one per part in the input
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* file.
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* All variable information is being stored in field data. The descriptions
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* listed in the case file are used as the array names in the field data.
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* For complex vector variables, the description is appended with _r (for the
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* array of real values) and _i (for the array if imaginary values). Complex
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* scalar variables are stored as a single array with 2 components, real and
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* imaginary, listed in that order.
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* @warning
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* You must manually call Update on this reader and then connect the rest
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* of the pipeline because (due to the nature of the file format) it is
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* not possible to know ahead of time how many outputs you will have or
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* what types they will be.
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* This reader can only handle static EnSight datasets (both static geometry
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* and variables).
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* @par Thanks:
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* Thanks to Yvan Fournier for providing the code to support nfaced elements.
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*/
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#ifndef vtkEnSightGoldBinaryReader_h
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#define vtkEnSightGoldBinaryReader_h
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#include "vtkEnSightReader.h"
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#include "vtkIOEnSightModule.h" // For export macro
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class vtkMultiBlockDataSet;
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class VTKIOENSIGHT_EXPORT vtkEnSightGoldBinaryReader : public vtkEnSightReader
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{
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public:
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static vtkEnSightGoldBinaryReader* New();
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vtkTypeMacro(vtkEnSightGoldBinaryReader, vtkEnSightReader);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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protected:
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vtkEnSightGoldBinaryReader();
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~vtkEnSightGoldBinaryReader() override;
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// Returns 1 if successful. Sets file size as a side action.
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int OpenFile(const char* filename);
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// Returns 1 if successful. Handles constructing the filename, opening the file and checking
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// if it's binary
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int InitializeFile(const char* filename);
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/**
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* Read the geometry file. If an error occurred, 0 is returned; otherwise 1.
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*/
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int ReadGeometryFile(const char* fileName, int timeStep, vtkMultiBlockDataSet* output) override;
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/**
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* Read the measured geometry file. If an error occurred, 0 is returned;
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* otherwise 1.
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*/
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int ReadMeasuredGeometryFile(
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const char* fileName, int timeStep, vtkMultiBlockDataSet* output) override;
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/**
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* Read scalars per node for this dataset. If an error occurred, 0 is
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* returned; otherwise 1. If there will be more than one component in
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* the data array, it is assumed that 0 is the first component added.
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*/
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int ReadScalarsPerNode(const char* fileName, const char* description, int timeStep,
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vtkMultiBlockDataSet* output, int measured = 0, int numberOfComponents = 1,
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int component = 0) override;
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/**
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* Read vectors per node for this dataset. If an error occurred, 0 is
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* returned; otherwise 1.
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*/
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int ReadVectorsPerNode(const char* fileName, const char* description, int timeStep,
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vtkMultiBlockDataSet* output, int measured = 0) override;
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/**
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* Read tensors per node for this dataset. If an error occurred, 0 is
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* returned; otherwise 1.
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*/
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int ReadTensorsPerNode(const char* fileName, const char* description, int timeStep,
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vtkMultiBlockDataSet* output) override;
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/**
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* Read scalars per element for this dataset. If an error occurred, 0 is
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* returned; otherwise 1. If there will be more than one componenet in the
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* data array, it is assumed that 0 is the first component added.
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*/
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int ReadScalarsPerElement(const char* fileName, const char* description, int timeStep,
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vtkMultiBlockDataSet* output, int numberOfComponents = 1, int component = 0) override;
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/**
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* Read vectors per element for this dataset. If an error occurred, 0 is
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* returned; otherwise 1.
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*/
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int ReadVectorsPerElement(const char* fileName, const char* description, int timeStep,
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vtkMultiBlockDataSet* output) override;
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/**
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* Read tensors per element for this dataset. If an error occurred, 0 is
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* returned; otherwise 1.
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*/
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int ReadTensorsPerElement(const char* fileName, const char* description, int timeStep,
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vtkMultiBlockDataSet* output) override;
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/**
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* Read an unstructured part (partId) from the geometry file and create a
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* vtkUnstructuredGrid output. Return 0 if EOF reached. Return -1 if
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* an error occurred.
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*/
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int CreateUnstructuredGridOutput(
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int partId, char line[80], const char* name, vtkMultiBlockDataSet* output) override;
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/**
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* Read a structured part from the geometry file and create a
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* vtkStructuredGrid output. Return 0 if EOF reached.
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*/
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int CreateStructuredGridOutput(
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int partId, char line[256], const char* name, vtkMultiBlockDataSet* output) override;
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/**
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* Read a structured part from the geometry file and create a
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* vtkRectilinearGrid output. Return 0 if EOF reached.
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*/
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int CreateRectilinearGridOutput(
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int partId, char line[256], const char* name, vtkMultiBlockDataSet* output);
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/**
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* Read a structured part from the geometry file and create a
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* vtkImageData output. Return 0 if EOF reached.
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*/
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int CreateImageDataOutput(
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int partId, char line[80], const char* name, vtkMultiBlockDataSet* output);
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/**
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* Internal function to read in a line up to 80 characters.
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* Returns zero if there was an error.
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*/
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int ReadLine(char result[80]);
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//@{
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/**
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* Internal function to read in a single integer.
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* Returns zero if there was an error.
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*/
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int ReadInt(int* result);
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int ReadPartId(int* result);
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//@}
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/**
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* Internal function to read in an integer array.
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* Returns zero if there was an error.
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*/
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int ReadIntArray(int* result, int numInts);
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/**
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* Internal function to read in a single long.
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* Returns zero if there was an error.
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*/
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int ReadLong(vtkTypeInt64* result);
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/**
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* Internal function to read in a float array.
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* Returns zero if there was an error.
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*/
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int ReadFloatArray(float* result, int numFloats);
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/**
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* Counts the number of timesteps in the geometry file
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* This function assumes the file is already open and returns the
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* number of timesteps remaining in the file
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* The file will be closed after calling this method
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*/
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int CountTimeSteps();
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//@{
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/**
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* Read to the next time step in the geometry file.
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*/
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int SkipTimeStep();
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int SkipStructuredGrid(char line[256]);
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int SkipUnstructuredGrid(char line[256]);
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int SkipRectilinearGrid(char line[256]);
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int SkipImageData(char line[256]);
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//@}
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/**
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* Seeks the IFile to the nearest time step that is <= the target time step
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*/
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int SeekToCachedTimeStep(const char* fileName, int realTimeStep);
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/**
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* Add an entry the time step cache
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*/
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void AddTimeStepToCache(const char* fileName, int realTimeStep, vtkTypeInt64 address);
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/**
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* Read the file index, if available, and add it to the time step cache
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*/
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void AddFileIndexToCache(const char* fileName);
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int NodeIdsListed;
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int ElementIdsListed;
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int Fortran;
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istream* GoldIFile;
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// The size of the file could be used to choose byte order.
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vtkTypeUInt64 FileSize;
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class FileOffsetMapInternal;
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FileOffsetMapInternal* FileOffsets;
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private:
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int SizeOfInt;
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vtkEnSightGoldBinaryReader(const vtkEnSightGoldBinaryReader&) = delete;
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void operator=(const vtkEnSightGoldBinaryReader&) = delete;
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};
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#endif
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