VTK  9.0.3
vtkParallelReader.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkParallelReader.h
5 
6  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7  All rights reserved.
8  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9 
10  This software is distributed WITHOUT ANY WARRANTY; without even
11  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12  PURPOSE. See the above copyright notice for more information.
13 
14 =========================================================================*/
26 #ifndef vtkParallelReader_h
27 #define vtkParallelReader_h
28 
29 #include "vtkCommonExecutionModelModule.h" // For export macro
30 #include "vtkReaderAlgorithm.h"
31 
32 #include <string> // needed for std::string in the interface
33 
34 struct vtkParallelReaderInternal;
35 
36 class VTKCOMMONEXECUTIONMODEL_EXPORT vtkParallelReader : public vtkReaderAlgorithm
37 {
38 public:
40  void PrintSelf(ostream& os, vtkIndent indent) override;
41 
48  void AddFileName(const char* fname);
49 
54 
58  int GetNumberOfFileNames() const;
59 
63  const char* GetFileName(int i) const;
64 
69  const char* GetCurrentFileName() const;
70 
72 
77  int ReadMetaData(vtkInformation* metadata) override;
78  int ReadMesh(int piece, int npieces, int nghosts, int timestep, vtkDataObject* output) override;
79  int ReadPoints(int piece, int npieces, int nghosts, int timestep, vtkDataObject* output) override;
80  int ReadArrays(int piece, int npieces, int nghosts, int timestep, vtkDataObject* output) override;
82 
83 protected:
85  ~vtkParallelReader() override;
86 
88 
95  virtual double GetTimeValue(const std::string& fname);
96 
103  virtual int ReadMesh(
104  const std::string& fname, int piece, int npieces, int nghosts, vtkDataObject* output) = 0;
105 
112  virtual int ReadPoints(
113  const std::string& fname, int piece, int npieces, int nghosts, vtkDataObject* output) = 0;
114 
121  virtual int ReadArrays(
122  const std::string& fname, int piece, int npieces, int nghosts, vtkDataObject* output) = 0;
123 
125 
126 private:
127  vtkParallelReader(const vtkParallelReader&) = delete;
128  void operator=(const vtkParallelReader&) = delete;
129 
130  vtkParallelReaderInternal* Internal;
131 };
132 
133 #endif
general representation of visualization data
Definition: vtkDataObject.h:60
Superclass for all pipeline executives in VTK.
Definition: vtkExecutive.h:47
a simple class to control print indentation
Definition: vtkIndent.h:34
Store vtkAlgorithm input/output information.
Superclass for algorithms that are parallel aware.
virtual int ReadPoints(const std::string &fname, int piece, int npieces, int nghosts, vtkDataObject *output)=0
A method that needs to be override by the subclass to provide the point coordinates.
virtual double GetTimeValue(const std::string &fname)
A subclass can override this method to provide an actual time value for a given file (this method is ...
void ClearFileNames()
Removes all filenames stored by the reader.
~vtkParallelReader() override
int ReadMesh(int piece, int npieces, int nghosts, int timestep, vtkDataObject *output) override
Read the mesh (connectivity) for a given set of data partitioning, number of ghost levels and time st...
void AddFileName(const char *fname)
Add a filename to be read.
int GetNumberOfFileNames() const
Returns the number of filenames stored by the reader.
virtual int ReadMesh(const std::string &fname, int piece, int npieces, int nghosts, vtkDataObject *output)=0
A method that needs to be override by the subclass to provide the mesh (topology).
const char * GetFileName(int i) const
Returns a particular filename stored by the reader.
virtual int ReadArrays(const std::string &fname, int piece, int npieces, int nghosts, vtkDataObject *output)=0
A method that needs to be override by the subclass to provide data arrays.
const char * GetCurrentFileName() const
Returns the filename that was last loaded by the reader.
int ReadPoints(int piece, int npieces, int nghosts, int timestep, vtkDataObject *output) override
Read the points.
int ReadArrays(int piece, int npieces, int nghosts, int timestep, vtkDataObject *output) override
Read all the arrays (point, cell, field etc.).
int ReadMetaData(vtkInformation *metadata) override
This is the superclass API overridden by this class to provide time support internally.
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
vtkExecutive * CreateDefaultExecutive() override
Create a default executive.
Superclass for readers that implement a simplified API.
@ string
Definition: vtkX3D.h:496