Geometry Boost List: [ggl] about multi geometry support

Subject: [ggl] about multi geometry support
From: barend (barend.gehrels)
Date: 2010-04-29 02:45:42

Hi,
I found some algorithms still can't work with multi geometry. For 
example,

"transform" only supports multi_polygon, although it seems we only need 
to

add some "dispatch::transform" partial specialization to make it work. 
And

"intersection" seems have no dispatch for any multi geometry. Is there 
any

deep reason these support not done it? I've wrote some dispatch for 
these

algorithms to support multi geometry, and they are all straightforward 
with

the facilities already done in the lib.
Yes, in most cases it is straightforward and the most probable reason is 
time / priority.
But for intersection and union, it is not necessary, they work for 
multi-polygons and for polygon/multi-polygon combinations.
If you have the dispatches implemented, you might send them to me (or to the 
list), they are welcome, and I will include them. If you have accompanying 
unit testcases they are welcome as well.
Thanks, Barend
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