Re: [robocup-rescue-s] buildings vicinity

From: <a_fathi_at_ce.sharif.edu>
Date: Wed, 13 Jun 2007 02:09:04 +0330 (IRST)

Hi there,
You can do the second one approximately like assuming each line as three
points or even two and then find the closest distance for different
combination of the points between two walls.

But yeah, pre-computation is better specially when freiburg has done it
for you.

Cheers,
Alireza.

> Hi Fahem,
>
> For finding neighbour buildings of each building I have two suggestion
> the first is simple but not that pricise and the second one more
> complicated but almost pricise:
>
> 1) find all buildings that have CONSTANT distance to it (for example
> 30000). the problem is that these are not exact neighbours they might be
> far away from it but it is simple to find.
> 2) first you have to find and calculate each building's wall. you can
> see Friburg fire simulator for it, walls are calculated there. then you
> need to draw some lines from center of building to each of the
> building's walls and see if your lines have intersect with other
> building's wall if so you can have the building that its wall has
> intersect as neighbour building. (nearest intersections are more correct
> for finding neighbours).
>
> the second way is time consuming and I suggest you do it in
> precomputation.
>
> Regards,
> S.R.Mirsharifi
>
> fahem <fahem.kebair_at_laposte.net> wrote:
> Hi all,
>
> I want to know how to guess if two buildings are neighbors or not. Is it
> with
> computing the euclidian distance between them. In this case what is the
> limit
> distance. If i can not make a mistake, the map graph known by each RCR
> agent
> do not resolves this problem beacause buildings are modeled as edges and
> are
> not limites by two nodes like roads. So what is the solution?
>
> Thanks for help
>
>
> Fahem Kebair
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>
>
> ...::] S.R.Mirsharifi [::...
>
>
>
>
>
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Received on Tue 12 Jun 2007 - 22:42:03 GMT

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