#1099: Polygon compareToSameClass does not account for holes
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Reporter: Brendan Ward | Owner: geos-devel@…
Type: defect | Status: new
Priority: major | Milestone: 3.9.1
Component: Default | Version: 3.9.0
Severity: Unassigned | Keywords:
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This function returns true even if holes are different between polygons.
Only the outer shell is compared:
https://github.com/libgeos/geos/blob/3.9/src/geom/Polygon.cpp#L329-L333
This looks like it is also the same case in JTS:
https://github.com/locationtech/jts/blob/jts-1.18.0/modules/core/src/main/java/org/locationtech/jts/geom/Polygon.java#L369-L396
(only the second variant compares holes)
Looks like the fix here is to use a similar approach as the second
function above in GEOS. Working up a PR per that approach now.
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Ticket URL: <https://trac.osgeo.org/geos/ticket/1099>
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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