You might have already tried this but I seem to recall that you must set
each capability one at a time. You cannot set multiple capabilities in one
statement by or'ing them. i.e.
trans_group.setCapability(ALLOW_CHILDREN_READ || ALLOW_CHILDREN_EXTEND);
will not work, you have to set them separately:
trans_group.setCapability(ALLOW_CHILDREN_READ);
trans_group.setCapability(ALLOW_CHILDREN_EXTEND);
Also, if you have not explicitly included the constants you will need to
write:
trans_group.setCapability(TransformGroup.ALLOW_CHILDREN_READ);
and so on.
HTH
Tim.
On Fri, 14 May 1999, Carsten Reckord wrote:
> Hi,
>
> I encountered some serious problems with groupnodes (both Branch- and
> Transformgroups), because setting flags like
> ALLOW_CHILDREN_READ/WRITE/EXTEND, ENABLE_PICK_REPORTING, ALLOW_DETACH
> (for BranchGroup) do not seem to work.
>
> For example: I tried to add a BranchGroup to another BranchGroup on a
> live Graph. Both had all the above ALLOW_... flags set (all Childnodes
> too), and ... I got a CapabilityNotSetException.
> So I tried to set the flags earlier and later in the code, set other
> flags too (I ended up in setting all known flags on all nodes), but
> nothing worked. The same for detaching a BranchGroup, and removing a
> child.
>
> Another problem was mousepicking. I tried to pick by TransformGroup.
> Though I set ENABLE_PICK_REPORTING for the TransformGroup, used
> setPickable and set any picking-related flags for the Group itself and
> all its children , I did not get any TransformGroups in my
> SceneGraphPath (neither using bounds nor geometry).
> Picking by e.g. Primitives works fine, but that does not help me much.
>
> I hope anybody out there can explain these strange effects.
>
> Thanks in advance,
> Carsten
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>
Tim.
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