[PostGIS] #5782: TopoGeo_addLinestring corrups topology: adjacent edges 33 and -32 bind different face (1 and 0)

[PostGIS]

#5782: TopoGeo_addLinestring corrups topology: adjacent edges 33 and -32 bind
different face (1 and 0)
--------------------------------+---------------------------
  Reporter:  Lars Aksel Opsahl  |      Owner:  strk
      Type:  defect             |     Status:  new
  Priority:  high               |  Milestone:  PostGIS 3.4.4
 Component:  topology           |    Version:
Resolution:                     |   Keywords:
--------------------------------+---------------------------
Comment (by Lars Aksel Opsahl):

 Replying to [comment:20 mdavis]:
 > It seems problematic to rely on distance calculation to determine
 topology, since it's inherently less precise than the actual geometric
 situation.
 >
 > Perhaps the fundamental problem is treating nearly-identical linestrings
 as distinct edges.  Would it be possible to specify a distance tolerance,
 and raise an error if lines contain distinct sections which are closer
 than the tolerance?

 What you say about tolerance think makes since, because I had big area
 missing and it did help some to make cell,  but al it did not fix all
 problems and I did not expect that .

 But then I did only one change switching from


 {{{
 select topology.CreateTopology ('toplogy_name', 4258, 1e-06);
 }}}

 to


 {{{
 select topology.CreateTopology ('toplogy_name', 4258, 1e-05);

 }}}

 and all area seems to recovered for that part.
-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/5782#comment:21>
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