[PostGIS] #5782: TopoGeo_addLinestring corrups topology: adjacent edges 33 and -32 bind different face (1 and 0)
PostGIS
trac at osgeo.org
Mon Sep 30 07:46:39 PDT 2024
#5782: TopoGeo_addLinestring corrups topology: adjacent edges 33 and -32 bind
different face (1 and 0)
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Reporter: Lars Aksel Opsahl | Owner: strk
Type: defect | Status: new
Priority: high | Milestone: PostGIS 3.4.4
Component: topology | Version:
Resolution: | Keywords:
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Comment (by strk):
I confirm PostGIS minimum distance calculation is currently constructing
the closest point first and then computing the distance from that point,
which is what is causing this robustness issue. PR
https://git.osgeo.org/gitea/postgis/postgis/pulls/222 is changing that and
fixes the issue at hand, giving the same answers as GEOS:
{{{
PostGIS:
A-Q: 9.716835623058815e-05
B-Q: 9.716835623082795e-05
SFCGAL:
A-Q: 9.716835622921602e-05
B-Q: 9.716835623197789e-05
GEOS:
A-Q: 9.7168356230588148e-05
B-Q: 9.7168356230827946e-05
}}}
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5782#comment:32>
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