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vtkDataObjectSource Class Reference

#include <vtkDataObjectSource.h>

Inheritance diagram for vtkDataObjectSource:

Inheritance graph
Collaboration diagram for vtkDataObjectSource:

Collaboration graph
List of all members.

Detailed Description

abstract class specifies interface for field source (or objects that generate field output)

vtkDataObjectSource is an abstract object that specifies behavior and interface of field source objects. Field source objects are source objects that create vtkFieldData (field data) on output.

Concrete subclasses of vtkDataObjectSource must define Update() and Execute() methods. The public method Update() invokes network execution and will bring the network up-to-date. The protected Execute() method actually does the work of data creation/generation. The difference between the two methods is that Update() implements input consistency checks and modified time comparisons and then invokes the Execute() which is an implementation of a particular algorithm.

vtkDataObjectSource provides a mechanism for invoking the methods StartMethod() and EndMethod() before and after object execution (via Execute()). These are convenience methods you can use for any purpose (e.g., debugging info, highlighting/notifying user interface, etc.) These methods accept a single void* pointer that can be used to send data to the methods. It is also possible to specify a function to delete the argument via StartMethodArgDelete and EndMethodArgDelete.

Another method, ProgressMethod() can be specified. Some filters invoke this method periodically during their execution. The use is similar to that of StartMethod() and EndMethod().

An important feature of subclasses of vtkDataObjectSource is that it is possible to control the memory-management model (i.e., retain output versus delete output data). If enabled the ReleaseDataFlag enables the deletion of the output data once the downstream process object finishes processing the data (please see text).

See also:
vtkSource vtkFilter vtkFieldDataFilter

Definition at line 61 of file vtkDataObjectSource.h.

Public Types

typedef vtkSource Superclass

Public Member Functions

virtual const char * GetClassName ()
virtual int IsA (const char *type)
void PrintSelf (ostream &os, vtkIndent indent)
vtkDataObjectGetOutput ()
vtkDataObjectGetOutput (int idx)
void SetOutput (vtkDataObject *)

Static Public Member Functions

static int IsTypeOf (const char *type)
static vtkDataObjectSourceSafeDownCast (vtkObject *o)

Protected Member Functions

 vtkDataObjectSource ()
 ~vtkDataObjectSource ()
virtual int FillOutputPortInformation (int, vtkInformation *)

Member Typedef Documentation

typedef vtkSource vtkDataObjectSource::Superclass

Reimplemented from vtkSource.

Definition at line 64 of file vtkDataObjectSource.h.

Constructor & Destructor Documentation

vtkDataObjectSource::vtkDataObjectSource  )  [protected]

vtkDataObjectSource::~vtkDataObjectSource  )  [inline, protected]

Definition at line 77 of file vtkDataObjectSource.h.

Member Function Documentation

virtual const char* vtkDataObjectSource::GetClassName  )  [virtual]

Reimplemented from vtkSource.

static int vtkDataObjectSource::IsTypeOf const char *  type  )  [static]

Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.

Reimplemented from vtkSource.

virtual int vtkDataObjectSource::IsA const char *  type  )  [virtual]

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.

Reimplemented from vtkSource.

static vtkDataObjectSource* vtkDataObjectSource::SafeDownCast vtkObject o  )  [static]

Reimplemented from vtkSource.

void vtkDataObjectSource::PrintSelf ostream &  os,
vtkIndent  indent

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkSource.

vtkDataObject* vtkDataObjectSource::GetOutput  ) 

Get the output field of this source.

vtkDataObject* vtkDataObjectSource::GetOutput int  idx  )  [inline]

Reimplemented from vtkSource.

Definition at line 70 of file vtkDataObjectSource.h.

References vtkSource::GetOutput().

void vtkDataObjectSource::SetOutput vtkDataObject  ) 

virtual int vtkDataObjectSource::FillOutputPortInformation int  ,
[protected, virtual]

Fill the output port information objects for this algorithm. This is invoked by the first call to GetOutputPortInformation for each port so subclasses can specify what they can handle.

Reimplemented from vtkSource.

The documentation for this class was generated from the following file:
Generated on Mon Jan 21 23:39:48 2008 for VTK by  doxygen 1.4.3-20050530