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

[PostGIS]

#2855: ST_MinkowskiSum gives polyhedral surface invalid error
--------------------+-------------------------------------------------------
 Reporter:  robe    |       Owner:  colivier     
     Type:  defect  |      Status:  new          
 Priority:  medium  |   Milestone:  PostGIS 2.2.0
Component:  sfcgal  |     Version:  2.1.x        
 Keywords:          |  
--------------------+-------------------------------------------------------
 I think this is a bug, but just trying out ST_MinkowskiSum to try to
 understand outputs so I may not be using it right


 {{{
 SELECT ST_MinkowskiSum('POLYHEDRALSURFACE Z( ((0 0 0, 0 0 1, 0 1 1, 0 1 0,
 0 0 0)),
         ((0 0 0, 0 1 0, 1 1 0, 1 0 0, 0 0 0)), ((0 0 0, 1 0 0, 1 0 1, 0 0
 1, 0 0 0)),
         ((1 1 0, 1 1 1, 1 0 1, 1 0 0, 1 1 0)),
         ((0 1 0, 0 1 1, 1 1 1, 1 1 0, 0 1 0)), ((0 0 1, 1 0 1, 1 1 1, 0 1
 1, 0 0 1)) )'::geometry,
         'POLYGON Z ((0.5 0 0.5,0.5 0 1.5,0.5 1 1.5,0.5 1 0.5,0.5 0
 0.5))'::geometry
 );

 }}}

 Gives error:

 {{{
 NOTICE:  During minkowski_sum(A,B):
 NOTICE:    with A: POLYHEDRALSURFACE(((0/1 0/1 0/1,0/1 0/1 1/1,0/1 1/1
 1/1,0/1 1/1 0/1,0/1 0/1 0/1)),((0/1 0/1 0/1,0/1 1/1 0/1,1/1 1/1 0/1,1/1
 0/1 0/1,0/1 0/1 0/1)),((0/1 0/1 0/1,1/1 0/1 0/1,1/1 0/1 1/1,0/1 0/1
 1/1,0/1 0/1 0/1)),((1/1 1/1 0/1,1/1 1/1 1/1,1/1 0/1 1/1,1/1 0/1 0/1,1/1
 1/1 0/1)),((0/1 1/1 0/1,0/1 1/1 1/1,1/1 1/1 1/1,1/1 1/1 0/1,0/1 1/1
 0/1)),((0/1 0/1 1/1,1/1 0/1 1/1,1/1 1/1 1/1,0/1 1/1 1/1,0/1 0/1 1/1)))
 NOTICE:     and B: POLYGON((1/2 0/1 1/2,1/2 0/1 3/2,1/2 1/1 3/2,1/2 1/1
 1/2,1/2 0/1 1/2))


 ERROR:  PolyhedralSurface is invalid : inconsistant orientation of
 PolyhedralSurface detected at edge 2 (3-3) of polygon 4 :
 POLYHEDRALSURFACE(((0/1 0/1,0/1 0/1,0/1 1/1,0/1 1/1,0/1 0/1)),((0/1
 0/1,0/1 1/1,1/1 1/1,1/1 0/1,0/1 0/1)),((0/1 0/1,1/1 0/1,1/1 0/1,0/1 0/
 ********** Error **********

 ERROR: PolyhedralSurface is invalid : inconsistant orientation of
 PolyhedralSurface detected at edge 2 (3-3) of polygon 4 :
 POLYHEDRALSURFACE(((0/1 0/1,0/1 0/1,0/1 1/1,0/1 1/1,0/1 0/1)),((0/1
 0/1,0/1 1/1,1/1 1/1,1/1 0/1,0/1 0/1)),((0/1 0/1,1/1 0/1,1/1 0/1,0/1 0/
 SQL state: XX000


 }}}

 I'm using sfcgal 1.0.4

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/2855>
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