On Tue, Aug 26, 2008 at 3:29 PM, Butler, Lee Mr CIV USA USAMC
<[EMAIL PROTECTED]> wrote:
> You have the right test. Unfortunately, it does not guarantee *symantic*
> correctness. A user can union a region below another region. It's wrong but
> possible. Now subtracting a region from another region is often worth doing.
Yep, we've done that before. But is it correct to say the first
region on a path is the "real" region?
> As for converting to a struct region, my (very) vague recollection is that
> this is performed during prep time.
>
> One question is: Where did you get the rt_comb_internal?
It comes from a function used by db_tree_walk for region starts.
Function args to db_tree_walk include:
rtip->rti_dbip, // database instance
The args to the region_start function:
struct db_tree_state* /* tsp */,
struct db_full_path* pathp,
const struct rt_comb_internal* combp,
genptr_t client_data
Inside this function is where I would like to get the struct region if possible.
Thanks, Lee.
-Tom
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