[yt-dev] strict and unstrict regions, periodic regions

[Matthew Turk]

On Fri, Feb 3, 2012 at 3:46 PM, Stephen Skory <s at skory.us> wrote:
> Matt,
>
>> Can someone remind me why we need the strict and unstrict region
>> objects?  The strict ones select by cell center, the unstrict by any
>> intersection.  I seem to recall a concrete use case but I can't dredge
>> it up.
>
> If memory serves, it was such that particles are chosen strictly for
> the halo finders. Does that sound right?

So a better question, I suppose, is why do we have an *un*strict
region?  Should we be doing unstrict for all of our data objects?
i.e., if a sphere intersects a cell but doesn't hit the corner, do we
select that cell?

>
>> Additionally, if we are actually checking for periodicity, it seems to
>> me we have no need for non-periodic regions, right?  We just coalesce
>> into a single rectangular prism object that, if appropriate for the
>> simulation, wraps around?
>
> Sounds good to me.

Cool.

-Matt

>
> --
> Stephen Skory
> s at skory.us
> http://stephenskory.com/
> 510.621.3687 (google voice)
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