[postgis-devel] [PostGIS] #1383: Topology: ST_AddEdgeNewFaces() fail to add an edge

[PostGIS]

#1383: Topology: ST_AddEdgeNewFaces() fail to add an edge
-----------------------+----------------------------------------------------
 Reporter:  aperi2007  |       Owner:  strk         
     Type:  defect     |      Status:  assigned     
 Priority:  medium     |   Milestone:  PostGIS 2.0.0
Component:  topology   |     Version:  trunk        
 Keywords:             |  
-----------------------+----------------------------------------------------

Comment(by strk):

 More specifically:

 {{{
 strk=# select ST_DWithin('LINESTRING(-0.2 0.4,-1e-08 0.4)',
                                        'POINT(-1e-08 0.4)',
                                                           0);
  st_dwithin
 ------------
  f
 (1 row)
 }}}

 Or, in other words:

 {{{
 => select ST_DWithin(g, st_endpoint(g), 0) from ( select 'LINESTRING(-0.2
 0.4,-1e-08 0.4)'::geometry as g ) f;
  st_dwithin
 ------------
  f
 (1 row)
 }}}

 A segment endpoint is not within 0 distance from the segment.
 Note that the test returns TRUE for the firstpoint...

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1383#comment:9>
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