VTK  9.2.6
vtkADIOS2CoreImageReader.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkADIOS2CoreImageReader.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 =========================================================================*/
33 #ifndef vtkADIOS2CoreImageReader_h
34 #define vtkADIOS2CoreImageReader_h
35 
36 #include <map> // For independently time stepped array indexing
37 #include <memory> // For std::unique_ptr
38 #include <string> // For variable name index mapping
39 #include <vector> // For independently time stepped array indexing
40 
41 #include "vtkDataObjectAlgorithm.h"
42 #include "vtkSetGet.h" // For property get/set macros
43 #include "vtkSmartPointer.h" // For the object cache
44 
45 #include "vtkIOADIOS2Module.h" // For export macro
46 
47 class vtkCellArray;
48 class vtkDataArray;
49 class vtkDataObject;
50 class vtkDataSet;
52 class vtkFieldData;
53 class vtkImageData;
56 class vtkStringArray;
57 
58 //----------------------------------------------------------------------------
59 
60 class VTKIOADIOS2_EXPORT vtkADIOS2CoreImageReader : public vtkDataObjectAlgorithm
61 {
62 public:
63  enum class VarType
64  {
65  PointData,
66  CellData
67  };
68  using Params = std::map<std::string, std::string>;
69  using StringToParams = std::map<std::string, Params>;
70  using InquireVariablesType = std::vector<std::pair<std::string, VarType>>;
71  static vtkADIOS2CoreImageReader* New(void);
73  void PrintSelf(ostream& os, vtkIndent indent) override;
74 
79  int CanReadFile(VTK_FILEPATH const std::string& name);
80 
81  virtual int CanReadFile(VTK_FILEPATH const char* filename);
82 
84 
87  vtkSetMacro(FileName, std::string);
88  vtkGetMacro(FileName, std::string);
90 
91  void SetFileName(VTK_FILEPATH const char* filename);
92 
94 
98  vtkSetVector3Macro(Origin, double);
99  vtkGetVector3Macro(Origin, double);
101 
103 
107  vtkSetVector3Macro(Spacing, double);
108  vtkGetVector3Macro(Spacing, double);
110 
112 
117  vtkStringArray* GetAllDimensionArrays();
118  vtkSetMacro(DimensionArray, std::string);
119  vtkGetMacro(DimensionArray, std::string);
121 
123 
127  vtkSetMacro(DimensionArrayAsCell, bool);
128  vtkGetMacro(DimensionArrayAsCell, bool);
129  vtkBooleanMacro(DimensionArrayAsCell, bool);
131 
132  vtkStringArray* GetAllTimeStepArrays();
134 
138  vtkSetMacro(TimeStepArray, std::string);
139  vtkGetMacro(TimeStepArray, std::string);
141 
143 
152  int GetNumberOfArrays();
153  const char* GetArrayName(int index);
154 
156 
160  void SetArrayStatus(const char* name, int status);
161  int GetArrayStatus(const char* name);
163 
165 
172  vtkSetMacro(IsColumnMajor, bool);
173  vtkGetMacro(IsColumnMajor, bool);
174  vtkBooleanMacro(IsColumnMajor, bool);
176 
178 
181  void SetActiveScalar(const std::pair<std::string, VarType>& inqVars);
182  std::pair<std::string, VarType>& GetActiveScalar();
183  const std::pair<std::string, VarType>& GetActiveScalar() const;
184 
186 
189  StringToParams& GetAvilableVariables();
190  const StringToParams& GetAvilableVariables() const;
191 
193 
196  StringToParams& GetAvailableAttributes();
197  const StringToParams& GetAvailableAttributes() const;
198 
200 
203  void SetController(vtkMultiProcessController*);
205 
209  virtual int ProcessRequest(
211 
212 protected:
214  ~vtkADIOS2CoreImageReader() override;
215 
216  int RequestDataObjectInternal(vtkInformationVector*);
217 
218  virtual int RequestInformation(
219  vtkInformation* request, vtkInformationVector** input, vtkInformationVector* output) override;
220  virtual int RequestData(
221  vtkInformation* request, vtkInformationVector** input, vtkInformationVector* output) override;
222 
223  std::string FetchTypeStringFromVarName(const std::string& name);
224 
225  void UpdateDimensionFromDimensionArray();
226 
227  // Read available variables and attributes in the file
228  bool OpenAndReadMetaData();
229 
230  // Convert the array selection into inquire variables.
231  void ConvertArraySelectionToInqVar();
232 
233  // Init the workDistribution based on the first inquired variable
234  bool InitWorkDistribution();
235 
236  void ReadImageBlocks(vtkMultiBlockDataSet* mbds);
237 
238  // Gather time steps info from the time step array
239  bool GatherTimeSteps();
240 
241  // Helper function for InitWorkDistribution to calculate how many blocks each process shall read
242  template <typename T>
243  void CalculateWorkDistribution(const std::string& varName);
244 
245  // Helper function for ReadImageBlocks to populate vtk data array from adios variable
246  template <typename T, template <typename...> class U>
247  vtkSmartPointer<vtkAbstractArray> PopulateDataArrayFromVar(
248  const std::string& varName, size_t blockIndex);
249 
250  // Helper function to gather time steps from adios time array
251  template <typename T>
252  void GatherTimeStepsFromADIOSTimeArray();
253 
255 
258 
261 
262  double Origin[3];
263  double Spacing[3];
264  int Dimension[3];
265 
267 
269 
270  struct vtkADIOS2CoreImageReaderImpl;
271  std::unique_ptr<vtkADIOS2CoreImageReaderImpl> Impl;
272 
273 private:
275  void operator=(const vtkADIOS2CoreImageReader&) = delete;
276 };
277 #endif
Store vtkAlgorithm input/output information.
std::vector< std::pair< std::string, VarType >> InquireVariablesType
abstract class to specify dataset behavior
Definition: vtkDataSet.h:62
static vtkDataObjectAlgorithm * New()
vtkTypeBool ProcessRequest(vtkInformation *, vtkInformationVector **, vtkInformationVector *) override
see vtkAlgorithm for details
a vtkAbstractArray subclass for strings
a simple class to control print indentation
Definition: vtkIndent.h:39
topologically and geometrically regular array of data
Definition: vtkImageData.h:53
abstract superclass for arrays of numeric data
Definition: vtkDataArray.h:55
std::map< std::string, Params > StringToParams
represent and manipulate attribute data in a dataset
#define VTK_FILEPATH
Superclass for algorithms that produce only data object as output.
object to represent cell connectivity
Definition: vtkCellArray.h:186
virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *)
Composite dataset that organizes datasets into blocks.
std::unique_ptr< vtkADIOS2CoreImageReaderImpl > Impl
virtual int RequestInformation(vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
vtkSmartPointer< vtkMultiProcessController > Controller
Store zero or more vtkInformation instances.
std::map< std::string, std::string > Params
general representation of visualization data
Definition: vtkDataObject.h:65
represent and manipulate fields of data
Definition: vtkFieldData.h:62
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
Multiprocessing communication superclass.