[postgis-users] Geography and CIRCULARSTRING / CURVEPOLYGON

[Evan Martin]

I'm using PostGIS 2.0.0 and would like to store a GML Surface in a way 
that allows calculating intersections between that surface and various 
points and lines. In my case, the Surface will have one PolygonPatch 
with no interior rings and an exterior ring which may be a 
LineStringSegment, a Geodesic, an Arc or a Circle. The distances can be 
in the order of tens to hundreds of miles.

CIRCULARSTRING and CURVEPOLYGON would seem like a good way of storing an 
Arc, except that they're not supported by the geography type, only 
geometry. Are there any plans to add support for them any time soon? 
What would be the best approach to this in the meanwhile?

Regards,

Evan Martin