ST_GeometryN support for TRIANGLE

[robe]

Olivier, This one crashes too, I think we can provide support don't you :) TIN works fine.

SELECT ST_GeometryN(ST_GeomFromEWKT(
'TRIANGLE ((
                0 0, 
                0 9, 
                9 0, 
                0 0
            ))'),1) ;

[colivier]

Yes of course we could support it :)

In a more generic way we should also support for Triangle InteriorRing and in fact all surfaces related function.

And to be consistent too with spec spirit should remove the PointN/NumPoints support.

[colivier]

Should be fixed as r5912