On 8/30/10 9:06 AM, M∡rtin Koppenhoefer wrote:
2010/8/29 Pieren<[email protected]>:
On Sun, Aug 29, 2010 at 11:37 AM, Nathan Edgars II<[email protected]>
wrote:
Perhaps a site relation? I'm not sure it's necessary; any application
that needs that information can calculate whether the polygons
overlap.
Yes, the topology shows what is "inside" or "outside" the polygon. And you
can use the tag "layer" to say what is on the top of what.
+1, but site-relations might still be useful in the context of power
generators. There are situations where the single objects do not
overlap but are side a side, for example you might have 3 generators
with 3 chimneys and want to model which chimney is connected to which
generator.
i'd lean towards site relations being useful because i think that
the computational complexity of doing lots of polygon intersections
is being underestimated. yes, for small bounding boxes it's ok,
but consider if you needed to do it on a larger scale, it'd make
certain tasks completely unreasonable (i'm not sure what those
tasks might be yet, haven't thought about it.)
richard
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