[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)
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  Reporter:  Lars Aksel Opsahl  |      Owner:  strk
      Type:  defect             |     Status:  new
  Priority:  high               |  Milestone:  PostGIS 3.4.4
 Component:  topology           |    Version:
Resolution:                     |   Keywords:
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Comment (by Lars Aksel Opsahl):

 Replying to [comment:21 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.

 But for resolve-overlap-and-gap/src/test/sql/regress/topology_test_02.sql
 i god up to 1e-04
-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/5782#comment:22>
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