<div dir="ltr">Thanks Bradley,<div><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, May 5, 2014 at 3:30 PM, Bradley Lowekamp <span dir="ltr"><<a href="mailto:blowekamp@mail.nih.gov" target="_blank">blowekamp@mail.nih.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Hello,<div><br></div><div>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.</div>
<div><br></div><div>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.</div><div><br></div><div>If you just need reference counting the LightObject is a good class to use.</div>
<div><br></div><div>Hope that helps,</div><div>Brad</div><div><br><div><div><div class="h5"><div>On May 5, 2014, at 9:12 AM, Rashad M <<a href="mailto:mohammedrashadkm@gmail.com" target="_blank">mohammedrashadkm@gmail.com</a>> wrote:</div>
<br></div></div><blockquote type="cite"><div><div class="h5"><div dir="ltr">Hi all,<div><br></div><div>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. </div>
<div><br></div><div>From the documentation of itkLightObject[1]. It says:</div><div><br></div><div><span style="font-family:'Lucida Grande',Verdana,Geneva,Arial,sans-serif;font-size:12px;line-height:22px">All ITK objects should be a subclass of </span><a href="http://www.itk.org/Doxygen/html/classitk_1_1LightObject.html" title="Light weight base class for most itk classes. " style="color:rgb(70,101,162);font-weight:bold;font-family:'Lucida Grande',Verdana,Geneva,Arial,sans-serif;font-size:12px;line-height:22px" target="_blank">LightObject</a><span style="font-family:'Lucida Grande',Verdana,Geneva,Arial,sans-serif;font-size:12px;line-height:22px"> or </span><a href="http://www.itk.org/Doxygen/html/classitk_1_1Object.html" title="Base class for most ITK classes. " style="color:rgb(70,101,162);font-weight:bold;font-family:'Lucida Grande',Verdana,Geneva,Arial,sans-serif;font-size:12px;line-height:22px" target="_blank">Object</a><span style="font-family:'Lucida Grande',Verdana,Geneva,Arial,sans-serif;font-size:12px;line-height:22px"> with few exceptions (due to performance concerns).</span><br>
</div><div><span style="font-family:'Lucida Grande',Verdana,Geneva,Arial,sans-serif;font-size:12px;line-height:22px"><br></span></div><div><span style="font-family:'Lucida Grande',Verdana,Geneva,Arial,sans-serif;font-size:12px;line-height:22px">Could any explain me the few exceptions concerning performance?</span></div>
<div><br></div><div>[1] <a href="http://www.itk.org/Doxygen/html/classitk_1_1LightObject.html" target="_blank">http://www.itk.org/Doxygen/html/classitk_1_1LightObject.html</a></div><div><div><br></div>-- <br><div><font face="arial, helvetica, sans-serif">Regards,<br>
Rashad</font></div>
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</blockquote></div><br></div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div><font face="arial, helvetica, sans-serif">Regards,<br> Rashad</font></div>
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