[sldev] Uniquely identifying parcels

[Able Whitman]

Thanks very much, Adam! That's incredibly helpful to know. It's fine that
the ParcelID will change if the parcel's geometry changes; in fact, that's
ideal.

On 6/24/07, Adam Frisby <adam at gwala.net> wrote:
>
> RegionHandle is based on the position of the region, and is as close to
> a region ID we can get. Changes if the sim moves, but is otherwise unique.
>
> ParcelID is mostly unique. If a parcel is subdivided, it will be split
> into two parcels with different IDs. So subdiving/joining will change
> the IDs, but otherwise it should stay the same.
>
> A combination of the two can make an alright parcel identifier, only
> that you need to be aware that it can change.
>
> Adam
>
> Able Whitman wrote:
>
> > The ParcelProperties message includes a LocalID for the parcel, but not
> > an LLUUID for it. For my purposes, this is unfortunate.
> >
> > I'm hoping there is a way uniquely identify parcels in a given region.
> > Is the LocalID a reliable identifier for a given parcel in a region? Or
> > does it change, like when a region restarts?
> >
> > Similarly, is a region's RegionHandle fixed, or is it also mutable? If
> > it's mutable, then is the region name fixed?
> >
> > I'd like to be able to use a combination of a RegionHandle (or a
> > region's name) and a parcel LocalID to uniquely identify a parcel. If
> > that won't work, the alternatives are pretty hackish.
> >
> > These are probably questions for a Linden, but since I don't know who
> > specifically to ask, I'm posting here. :)
> >
> > Thanks!
> > --Able
> >
> >
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