[osg-users] DEEP_COPY_USERDATA isn't that deep

[Robert Osfield]

Hi Chris,


I'm not seeing a particularly easy way to deep-copy the rest of the stuff 
> in osg::DefaultUserDataContainer, either. The description list is a vector 
> of strings, which are deep-copied, so that's fine, but the object list is 
> harder as I'd need to cast the const off the CopyOp if I were to deep-copy 
> those objects (which is undesirable) or copy the CopyOp to get a non-const 
> version, which I can't do, as there's no way to determine if it's actually 
> a user-provided derived class. 
>


I have had a chance to look at the 
DefaultUserDataContainer::DefaultUserDataContainer(const 
DefaultUserDataContainer& udc, const osg::CopyOp& copyop) implementation 
and it looks fine for me.  Could it be that you are just interepreting 
things a bit different than the implementation provides.  

The CopyOp::Options::DEEP_COPY_ALL is what you should use if you want to 
copy all the contents of a subgraph, including a UserDataContainer.  
DEEP_COPY_ALL enables deep copy of all options.

At this point I think the implementation is correct and there is nothing to 
fix.

Robert.
 
 

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