[postgis-devel] [PostGIS] #1706: TopoGeo_AddPolygon not adding polygons

[PostGIS]

#1706: TopoGeo_AddPolygon not adding polygons
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 Reporter:  pramsey   |       Owner:  strk         
     Type:  defect    |      Status:  new          
 Priority:  medium    |   Milestone:  PostGIS 2.0.0
Component:  topology  |     Version:  trunk        
 Keywords:            |  
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Comment(by strk):

 {{{
 with inp as (SELECT
 '01020000000300000000000000000034400000000000002440000000000000244000000000000024400000000000002240FFFFFFFFFFFF2740'::geometry
 as e,
 '01020000000400000000000000000022400000000000002840000000000000244000000000000024400000000000002E40000000000000244000000000000034400000000000002440'::geometry
 as n ) select st_astext(e) as e, st_astext(n) as n, st_equals(e,n),
 st_hausdorffdistance(e,n), st_astext(st_symdifference(e,n)) as sd,
 st_equals(st_snap(n,e,1e-14), e) as snapequals, st_equals(st_endpoint(n),
 st_startpoint(e)) as new_end_equals_exs_start, st_equals(st_startpoint(n),
 st_endpoint(e)) as new_start_equals_exs_end,
 st_equals(st_snap(n,st_endpoint(e),5), e) as snap_to_lastpoint_equals from
 inp;
 }}}

 The above shows that altough the problem is vertex (9,12) not being
 exactly the same, snapping the new edge to the existing edge makes them
 equal but snapping the new edge to _only_ the (9,12) vertex of the old
 edge does _not_ make them equal.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1706#comment:16>
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