[postgis-tickets] [PostGIS] #2254: Add SFCGAL support

[PostGIS]

#2254: Add SFCGAL support
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 Reporter:  colivier      |       Owner:  colivier     
     Type:  enhancement   |      Status:  new          
 Priority:  medium        |   Milestone:  PostGIS 2.1.0
Component:  postgis       |     Version:  trunk        
 Keywords:  CGAL, SFCGAL  |  
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Comment(by colivier):

 Regina,

 1) Humm your right i assume index on 3D data must be 3D Index but no way
 to be sure, i remove the &&& to a safe &&

 2) and 3)

 As we want to have a single SQL Schema (and that 's the best option for
 end user)
 we need to have a single backend, able to perform the switch (i.e geos or
 sfcgal).

 So for some functions provided by both GEOS and SFCGAL, we need to
 slightly change the prototype name in postgis.sql.in and lwgeom_geos.h.

 But obviously we didn't change anything in the GEOS behaviour functions

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2254#comment:9>
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