[postgis-tickets] [PostGIS] #3380: "geometry crosses edge" with 1e-2 tolerance

[PostGIS]

#3380: "geometry crosses edge" with 1e-2 tolerance
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  Reporter:  strk      |      Owner:  strk
      Type:  defect    |     Status:  new
  Priority:  medium    |  Milestone:  PostGIS 2.0.8
 Component:  topology  |    Version:  2.0.x
Resolution:            |   Keywords:
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Comment (by strk):

 I'm thinking that the main problem here is that the "tolerance" is not
 fully enforced to avoid any two vertices of the topology are closer than
 such tolerance. In particular, after adding the second line, it is split
 in a way that leaves two consecutive points under the tolerance.

 Once a tolerance is given, I think it should never allow to insert similar
 lines.
 I could try to remove the consecutive ones, but it might not be enough
 (and see #3388 about the consecutive ones)

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3380#comment:11>
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