Antonio Bleile wrote:
>>> How would I render a tree by just rendering the leaves?
>>> It can't work with travmasks, so I tried with some
>>> reimplementation of the RenderAction
>> I guess that is more or less the only option (you basically need to
>> replace Action::recurse to omit the enter calls).
>
> I thought about that as well, but it's not virtual...
> Or has that changed since 1.6? Allright I'll take a look...
No, no need to waste your time, it is not virtual. I meant in your
reimplementation you need basically the same code with just that change.
>>> and also adding
>>> a custom registerEnter function, but I can't figure out
>>> how to skip the rendering of internal geometry nodes
>>> (without skipping their children!)
>> Sorry, this part remains a mystery to me. What are "internal geometry
>> nodes" ? And in what way does that affect children handling (unless a
>
> Internal geometry nodes are Geometry nodes with children :)
ah, ok.
>> core's callback calls action->useNodeList() the action defaults to
>> visiting all children (callback returns Action::Continue) or none
>> (callback returns Action::Skip or Aktion::Quit) ?
>>
>> Can you give a bit of background of what you are trying to do, maybe
>> that allows us to come up with some ideas.
>
> I just add bounding boxes of a geometry nodes as child of that
> node. I know there are 1000 better ways to do so, but I have a
> particular case here....
Oh, now I get it, big misunderstanding on my end. I thought you wanted a
traversal that only calls the leave callbacks instead of enter and leave
callbacks, sorry.
You can override an Action's callbacks on a per instance basis
(registerEnterFunction, registerLeaveFunction), so you can create a
regular RenderAction and register a different callback for geometry.
That callback would basically do the same as the regular one, but only
after testing that the node has no children.
Hope it helps,
Carsten
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