#include <itkLightProcessObject.h>
Inheritance diagram for itk::LightProcessObject:
LightProcessObject is an abstract object that specifies behavior and interface of visualization network process objects (sources, filters, mappers). Source objects are creators of visualization data; filters input, process, and output visualization data; and mappers transform data into another form (like rendering primitives or write data to a file).
A major role of LightProcessObject is to define the inputs and outputs of a filter. More than one input and/or output may exist for a given filter. Some classes (e.g., source objects or mapper objects) will not use inputs (the source) or outputs (mappers). In this case, the inputs or outputs is just ignored.
LightProcessObject invokes the following events: , Command::StartEvent, Command::EndEvent These are convenience events you can use for any purpose (e.g., debugging info, highlighting/notifying user interface, etc.) See Command and LightObject for information on using AddObserver.
Another event Command::ProgressEvent can be observed. Some filters invoke this event periodically during their execution (with the progress, parameter, the fraction of work done). The use is similar to that of StartEvent and EndEvent. Filters may also check their AbortGenerateData flag to determine whether to prematurally end their execution.
An important feature of subclasses of LightProcessObject 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).
Subclasses of LightProcessObject may override 4 of the methods of this class to control how a given filter may interact with the pipeline (dataflow). These methods are: GenerateOutputInformation(), EnlargeOutputRequestedRegion(), GenerateInputRequestedRegion(), and GenerateOutputRequestedRegion(). By overriding these methods, a filter can deviate from the base assumptions of the pipeline execution model.
Definition at line 71 of file itkLightProcessObject.h.
Public Types | |
| typedef SmartPointer< const Self > | ConstPointer |
| typedef SmartPointer< Self > | Pointer |
| typedef LightProcessObject | Self |
| typedef Object | Superclass |
Public Member Functions | |
| virtual void | AbortGenerateDataOff () |
| virtual void | AbortGenerateDataOn () |
| Get the execution progress of a process object The progress is *a floating number | between (0, 1) |
| Set the execution progress of a process object The progress is *a floating number | between (0, 1) |
| virtual LightObject::Pointer | CreateAnother () const |
| virtual void | DebugOff () const |
| virtual void | DebugOn () const |
| virtual void | Delete () |
| virtual const bool & | GetAbortGenerateData () |
| Command * | GetCommand (unsigned long tag) |
| bool | GetDebug () const |
| const MetaDataDictionary & | GetMetaDataDictionary (void) const |
| MetaDataDictionary & | GetMetaDataDictionary (void) |
| virtual unsigned long | GetMTime () const |
| virtual const char * | GetNameOfClass () const |
| meaning *the filter has completed execution *virtual const float & | GetProgress () |
| virtual int | GetReferenceCount () const |
| bool | HasObserver (const EventObject &event) const |
| void | InvokeEvent (const EventObject &) const |
| void | InvokeEvent (const EventObject &) |
| virtual void | Modified () const |
| void | Print (std::ostream &os, Indent indent=0) const |
| virtual void | Register () const |
| void | RemoveAllObservers () |
| void | RemoveObserver (unsigned long tag) |
| virtual void | SetAbortGenerateData (bool _arg) |
| void | SetDebug (bool debugFlag) const |
| void | SetMetaDataDictionary (const MetaDataDictionary &rhs) |
| meaning *the filter has completed execution *virtual void | SetProgress (float _arg) |
| virtual void | SetReferenceCount (int) |
| virtual void | UnRegister () const |
| virtual void | UpdateOutputData () |
| void | UpdateProgress (float amount) |
Static Public Member Functions | |
| static void | BreakOnError () |
| static bool | GetGlobalWarningDisplay () |
| static void | GlobalWarningDisplayOff () |
| static void | GlobalWarningDisplayOn () |
| static Pointer | New () |
| This is a global flag that controls whether any warning *or error messages are displayed *static void | SetGlobalWarningDisplay (bool flag) |
Public Attributes | |
| Allow people to add remove invoke observers(callbacks) to any ITK *object.This is an implementation of the subject/observer design *pattern.An observer is added by specifying an event to respond to *and an itk unsigned lon | AddObserver )(const EventObject &event, Command *) const |
| This is a global flag that controls whether any | debug |
| Get the execution progress of a process object The progress is *a floating number meaning no | progress |
| Set the execution progress of a process object The progress is *a floating number meaning no | progress |
Protected Member Functions | |
| virtual void | GenerateData () |
| LightProcessObject () | |
| bool | PrintObservers (std::ostream &os, Indent indent) const |
| void | PrintSelf (std::ostream &os, Indent indent) const |
| virtual void | PrintTrailer (std::ostream &os, Indent indent) const |
| ~LightProcessObject () | |
Protected Attributes | |
| int | m_ReferenceCount |
| SimpleFastMutexLock | m_ReferenceCountLock |
| Methods invoked by virtual 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.*/virtual void PrintSelf(std voi | PrintHeader )(std::ostream &os, Indent indent) const |
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Turn on and off the AbortGenerateData flag. |
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This method is called when itkExceptionMacro executes. It allows the debugger to break on error. |
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Create an object from an instance, potentially deferring to a factory. This method allows you to create an instance of an object that is exactly the same type as the referring object. This is useful in cases where an object has been cast back to a base class. Reimplemented from itk::LightObject. |
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Turn debugging output off. |
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Turn debugging output on. |
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Delete an itk object. This method should always be used to delete an object when the new operator was used to create it. Using the C delete method will not work with reference counting. |
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Get the AbortGenerateData flag for the process object. Process objects may handle premature termination of execution in different ways. |
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Get the command associated with the given tag. NOTE: This returns a pointer to a Command, but it is safe to asign this to a Command::Pointer. Since Command inherits from LightObject, at this point in the code, only a pointer or a reference to the Command can be used. |
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Get the value of the debug flag. |
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Gets the reference count on this object. Definition at line 98 of file itkLightObject.h. |
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Definition at line 100 of file itkObject.h. References itk::Object::SetGlobalWarningDisplay(). |
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Definition at line 98 of file itkObject.h. References itk::Object::SetGlobalWarningDisplay(). |
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Return true if an observer is registered for this event. |
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Call Execute on all the Commands observing this event id. The actions triggered by this call doesn't modify this object. |
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Call Execute on all the Commands observing this event id. |
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Cause the object to print itself out. |
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Increase the reference count (mark as used by another object). Reimplemented from itk::LightObject. |
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Remove all observers . |
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Remove the observer with this tag value. |
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Set the AbortGenerateData flag for the process object. Process objects may handle premature termination of execution in different ways. |
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Set the value of the debug flag. A non-zero value turns debugging on. |
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Referenced by itk::Object::GlobalWarningDisplayOff(), and itk::Object::GlobalWarningDisplayOn(). |
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Sets the reference count (use with care) Reimplemented from itk::LightObject. |
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Decrease the reference count (release by another object). Reimplemented from itk::LightObject. |
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Actually generate new output. |
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Update the progress of the process object. If a ProgressMethod exists, executes it. Then set the Progress ivar to amount. The parameter amount should range between (0,1). |
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Definition at line 94 of file itkObject.h. |
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Number of uses of this object by other objects. Definition at line 119 of file itkLightObject.h. |
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Mutex lock to protect modification to the reference count Definition at line 122 of file itkLightObject.h. |
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Definition at line 104 of file itkLightProcessObject.h. |
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Definition at line 98 of file itkLightProcessObject.h. |
1.4.2 written by Dimitri van Heesch,
© 1997-2000