[geos-devel] [GEOS] #588: [JTS fails] valid polygon when cw, not valid when ccw

[GEOS]

#588: [JTS fails] valid polygon when cw, not valid when ccw
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 Reporter:  olivier80   |       Owner:  geos-devel@…              
     Type:  defect      |      Status:  new                       
 Priority:  major       |   Milestone:  3.3.6                     
Component:  Default     |     Version:  3.3.5                     
 Severity:  Unassigned  |    Keywords:  jtsfail                   
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Comment(by strk):

 Martin Davis wrote:
 > Turns out that this isn't an issue in the trunk version of JTS
 > (but it is in JST 1.12).
 >
 > This is probably due to the recent switch to using extended precision
 > to compute determinant signs - which affects all intersection
 computations.
 > It would be good if GEOS switched to using this new more (fully?)
 > robust technique as well.

 See ticket #591 for that

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Ticket URL: <http://trac.osgeo.org/geos/ticket/588#comment:6>
GEOS <http://geos.refractions.net/>
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology Suite (JTS).