[ITK] [ITK-dev] Question about itkLightObject vs itkObject

[Rashad M]

Thanks Bradley,



On Mon, May 5, 2014 at 3:30 PM, Bradley Lowekamp <blowekamp at mail.nih.gov>wrote:

> Hello,
>
> The cost of doing the reference counting is what the performance concern
> is about. The LightObject is rather light otherwise. The Object class adds
> the Command/ Observer, and MetaDataDictionary features, along with a few
> other items.
>
> Common places where these classes are not used, are for numeric classes
> such as Point, Matrix, Vector etc, and structures internal to classes for
> variety of reasons there.
>
> If you just need reference counting the LightObject is a good class to use.
>
> Hope that helps,
> Brad
>
> On May 5, 2014, at 9:12 AM, Rashad M <mohammedrashadkm at gmail.com> wrote:
>
> Hi all,
>
> I have some doubts about the usage of itkLightObject. The situation is I
> need to have a simple class and it must has Smart pointers and macro
> definitions as in itk class. This class does not involve image inputs and
> not a filter type. So I decided to go with itkLightObject for the base
> class.
>
> From the documentation of itkLightObject[1]. It says:
>
> All ITK objects should be a subclass of LightObject<http://www.itk.org/Doxygen/html/classitk_1_1LightObject.html>
>  or Object <http://www.itk.org/Doxygen/html/classitk_1_1Object.html> with
> few exceptions (due to performance concerns).
>
> Could any explain me the few exceptions concerning performance?
>
> [1] http://www.itk.org/Doxygen/html/classitk_1_1LightObject.html
>
> --
> Regards,
>    Rashad
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-- 
Regards,
   Rashad
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