Hi Yuri,
i missed the start of your discussion.
about how many objects are you talking here.
My picking uses kind of object to appearance map and modifies the appearances
in place when
selecting an object.
You have to set all the capabilities of the appearance you going to exploit by
the manipulation.
I use a central AppearanceFactory to produce the appearances, set the
capabilities and register
them to objects. My scenes are pretty complex but picking still works fine in a
short (definitely below 4 seconds) response time.
Cheers,
Karsten
Yuri Nikishkov wrote:
> Thank you for the response.
> Just a quick note:
> As we have found, the performance of AlternateApperance scales with the
> number of shapes affected, but not with the size of geometry. We were able
> to significantly decrease the time needed to set AlternateApperance on a
> large scene, after we merged the shapes with compatible geometry under the
> same group.
> As for original intent of AlternateApperance: we are using it for
> highlight in response to a user action. Still, 4 second delay is
> unacceptable.
>
> -Yuri
>
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