[postgis-tickets] [PostGIS] #3046: topology.GetRingEdges return wrong ring when edge.next_left/right = edge

PostGIS trac at osgeo.org
Fri Feb 20 00:38:24 PST 2015


#3046: topology.GetRingEdges return wrong ring when edge.next_left/right = edge
-----------------------+----------------------------------------------------
  Reporter:  remic     |       Owner:  strk  
      Type:  defect    |      Status:  closed
  Priority:  medium    |   Milestone:        
 Component:  topology  |     Version:  2.1.x 
Resolution:  invalid   |    Keywords:        
-----------------------+----------------------------------------------------
Changes (by strk):

  * status:  new => closed
  * resolution:  => invalid


Comment:

 It's not an error. The function lists the edge being walked on and the
 direction. By starting with a negative value you request to walk on that
 edge backward, from its right side. A left turn is taken on every node.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/3046#comment:1>
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