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110 lines
4.1 KiB
110 lines
4.1 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkProgrammableSource.h,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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// .NAME vtkProgrammableSource - generate source dataset via a user-specified function
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// .SECTION Description
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// vtkProgrammableSource is a source object that is programmable by the
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// user. To use this object, you must specify a function that creates the
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// output. It is possible to generate an output dataset of any (concrete)
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// type; it is up to the function to properly initialize and define the
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// output. Typically, you use one of the methods to get a concrete output
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// type (e.g., GetPolyDataOutput() or GetStructuredPointsOutput()), and
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// then manipulate the output in the user-specified function.
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//
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// Example use of this include writing a function to read a data file or
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// interface to another system. (You might want to do this in favor of
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// deriving a new class.) Another important use of this class is that it
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// allows users of interpreters (e.g., Tcl or Java) the ability to write
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// source objects without having to recompile C++ code or generate new
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// libraries.
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// .SECTION See Also
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// vtkProgrammableFilter vtkProgrammableAttributeDataFilter
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// vtkProgrammableDataObjectSource
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#ifndef __vtkProgrammableSource_h
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#define __vtkProgrammableSource_h
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#include "vtkDataSetAlgorithm.h"
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class vtkPolyData;
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class vtkStructuredPoints;
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class vtkStructuredGrid;
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class vtkUnstructuredGrid;
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class vtkRectilinearGrid;
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class VTK_GRAPHICS_EXPORT vtkProgrammableSource : public vtkDataSetAlgorithm
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{
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public:
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static vtkProgrammableSource *New();
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vtkTypeRevisionMacro(vtkProgrammableSource,vtkDataSetAlgorithm);
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// Description:
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// Specify the function to use to generate the source data. Note
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// that the function takes a single (void *) argument.
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void SetExecuteMethod(void (*f)(void *), void *arg);
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// Description:
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// Set the arg delete method. This is used to free user memory.
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void SetExecuteMethodArgDelete(void (*f)(void *));
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// Description:
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// Specify the function to use to fill in information about the source data.
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void SetRequestInformationMethod(void (*f)(void *));
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// Description:
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// Get the output as a concrete type. This method is typically used by the
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// writer of the source function to get the output as a particular type
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// (i.e., it essentially does type casting). It is the users responsibility
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// to know the correct type of the output data.
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vtkPolyData *GetPolyDataOutput();
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// Description:
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// Get the output as a concrete type.
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vtkStructuredPoints *GetStructuredPointsOutput();
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// Description:
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// Get the output as a concrete type.
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vtkStructuredGrid *GetStructuredGridOutput();
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// Description:
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// Get the output as a concrete type.
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vtkUnstructuredGrid *GetUnstructuredGridOutput();
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// Description:
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// Get the output as a concrete type.
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vtkRectilinearGrid *GetRectilinearGridOutput();
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protected:
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vtkProgrammableSource();
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~vtkProgrammableSource();
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virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
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virtual int RequestDataObject(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
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virtual int RequestInformation(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
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void (*ExecuteMethod)(void *); //function to invoke
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void (*ExecuteMethodArgDelete)(void *);
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void *ExecuteMethodArg;
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void (*RequestInformationMethod)(void *); // function to invoke
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vtkTimeStamp ExecuteTime;
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int RequestedDataType;
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private:
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vtkProgrammableSource(const vtkProgrammableSource&); // Not implemented.
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void operator=(const vtkProgrammableSource&); // Not implemented.
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};
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#endif
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