[geos-devel] [GEOS] #959: Reversed result in GEOSClipByRect

GEOS geos-trac at osgeo.org
Mon Mar 11 15:52:07 PDT 2019

#959: Reversed result in GEOSClipByRect
 Reporter:  Algunenano   |       Owner:  geos-devel@…
     Type:  defect       |      Status:  new
 Priority:  major        |   Milestone:  3.5.2
Component:  Default      |     Version:  3.5.0
 Severity:  Significant  |  Resolution:
 Keywords:               |

Comment (by mdavis):

 That wagyu quick clip algorithm will certainly be fast. But it will
 produce highly invalid geometry from a GEOS geometry model perspective.
 That may not matter for tile rendering, of course.

 But then it's doing something different than GEOSClipByRect, which is
 intended to produce valid geometry.  This is a harder task, so slower and
 more demanding of the input.

 If MVT Tile generation can get away with a less restrictive geometry model
 and hence faster/simpler algorithms, that's great. But perhaps those
 algorithms should not be in GEOS, or at least they should be in a separate

Ticket URL: <https://trac.osgeo.org/geos/ticket/959#comment:5>
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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