[geos-devel] nasty ring bug

Carl Anderson carl.anderson at vadose.org
Tue Feb 20 23:17:34 EST 2007


I forgot to post my working example of the "Nasty Buffer" bug

The commonality between the two examples are:

Multipolyon
    first ring is
       single closed ring with no holes
    second or later ring is
       contains the first ring in the Y dimension but has no overlap in 
the X dimension
       has a hole that overlaps the first ring in the Y dimension but 
has no overlap in the X dimension

I have not been able to manually construct a new nasty bug with these 
rules, so there is at least one additional rule
I don't see just yet.

I am currently digging in BufferOp.cpp around the routine find 
StabbedSegments()

C.

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