[brlcad-users] Casting RT Structs

[Tom B. <tom...@gm...>]

If I have a 'struct rt_comb_internal' pointer (say, combp):

 1. How do I confirm it's a region?

      I believe I test combp->region_flag for truth.  If it is true,
does that guarantee any regions below it are not acting as regions?

 2. If it's possible, how do I manipulate combp to get to its region pointer?

Thanks.

-Tom