Thursday, May 27, 1999, 10:29:24 PM, you write:
smag> It appears to me that the only function you need is the one that
smag> computes a bounding box of a polygon, returning it as the box
smag> type. Then use whatever geometric operators are available for the
smag> boxes. You can do the same with points, in which case you need a
smag> function that returns a box whose corners coincide with the point.
Consider big river (half circle) and a map-view-box inside it. This river
shouldn't be fetched from database... (but thank You for suggestions)
Piotr
/--------------------------------------------------------/
/- Piotr Stelmaszyk |---- Student of Computer Science ---/
/------------------ | at Poznan University of Technology /
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/----- mailto:kelman@alpha.net.pl -----------------------/
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