[postgis-tickets] [PostGIS] #5093: ST_Simplify(TopoGeometry) returns NULL on collapse

[PostGIS]

#5093: ST_Simplify(TopoGeometry) returns NULL on collapse
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 Reporter:  strk         |      Owner:  strk
     Type:  enhancement  |     Status:  new
 Priority:  medium       |  Milestone:  PostGIS 3.3.0
Component:  topology     |    Version:  3.2.x
 Keywords:               |
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 The ST_Simplify(TopoGeometry) function makes no effort to preserve
 topology, and may result in returning a NULL value for collapsed elements
 (like closed linearring). It may be nice to enhance it, using the
 topological information.

 An example implementation could enforce 2 additional nodes on single-node
 linestrings.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5093>
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