Hi Sajjad,

Sajjadul Islam wrote:
> Hello,
> 
> The automatic garbage cleaner in OpenSG seems to be a very useful tool.
> And it has been described in the tutorial without a practical example
> and thats why probably it is not clear to me.
> 
> I have attached a working version of a code of the planetary system
> without the use RefPtr<>  and i want to use that concept, but not sure
> how to use that concept.
> 
> I hope someone with give me more detail on that issue.

I haven't time to look at the code, but you can find a lot of 
information on this area under the keyword 'smart pointers' or in the 
boost::shared_ptr library.

The basic idea is that the RefPtr will call addRef and subRef 
automatically whenever a value is assigned to it, so you never have to 
call it yourself as long as all your variables are RefPtrs.

Hope it helps

        Dirk


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