[geos-devel] [GEOS] #1144: OverlayNG intersection gives wrong result

GEOS geos-trac at osgeo.org
Wed Nov 3 03:29:39 PDT 2021

#1144: OverlayNG intersection gives wrong result
 Reporter:  theroggy    |      Owner:  geos-devel@…
     Type:  defect      |     Status:  new
 Priority:  major       |  Milestone:  3.10.1
Component:  Default     |    Version:  3.9.0
 Severity:  Unassigned  |   Keywords:
 Intersection between two polygons gives a wrong result.

 I encountered the problem when using spatialite, but reproduced using
 shapely as described in the following issue:

 I also had a look using JTS TestBuilder and the problem can be reproduced
 there as well. Using the "old" intersection the result is correct, but
 when using the "OverlayNG" intersection the same problem appears.

Ticket URL: <https://trac.osgeo.org/geos/ticket/1144>
GEOS <http://trac.osgeo.org/geos>
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology Suite (JTS).

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