[geos-devel] [GEOS] #1101: Negative buffer does not return empty geometry

GEOS geos-trac at osgeo.org
Sun Feb 21 10:11:01 PST 2021


#1101: Negative buffer does not return empty geometry
------------------------+---------------------------
 Reporter:  uclaros     |       Owner:  geos-devel@…
     Type:  defect      |      Status:  new
 Priority:  major       |   Milestone:  3.9.2
Component:  Default     |     Version:  3.9.0
 Severity:  Unassigned  |  Resolution:
 Keywords:              |
------------------------+---------------------------

Comment (by mdavis):

 To refine that idea a bit, for a given area A the shape with the largest
 distance to the boundary is a circle.  So the radius of the circle of area
 A is a lower bound on the negative buffer distance which will cause a
 shape to be eroded completely. This is a good optimization to add to the
 buffer code, and it might prevent this sort of issue, in large part.

-- 
Ticket URL: <https://trac.osgeo.org/geos/ticket/1101#comment:3>
GEOS <http://trac.osgeo.org/geos>
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology Suite (JTS).


More information about the geos-devel mailing list