[postgis-tickets] [PostGIS] #2855: ST_MinkowskiSum gives polyhedral surface invalid error

[PostGIS]

#2855: ST_MinkowskiSum gives polyhedral surface invalid error
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 Reporter:  robe    |       Owner:  colivier     
     Type:  defect  |      Status:  new          
 Priority:  medium  |   Milestone:  PostGIS 2.2.0
Component:  sfcgal  |     Version:  2.1.x        
 Keywords:          |  
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Comment(by vmo):

 The source of the problem is that volumes are not really supported, 3D
 geom are flattened internally to perform the Minkowski sum, and a
 flattened volume is an invalid PolyhedralSurface.

 We have to fix SFCGAL to have a meaningful error message and improve the
 function documentation.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2855#comment:1>
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