Re: [Avogadro-devel] Periodic bond rendering

[Marcus D. H. <mar...@ki...>]

On Mon, Apr 16, 2012 at 12:50 PM, Tuukka Verho <tuu...@aa...> wrote:
> David Lonie kirjoitti 16.4.2012 kello 18.39:
>
> With up to 3 clipping planes there are so many possibilities and corner
> cases that it is virtually impossible to avoid all artifacts. We just have
> to settle how many cases we want to cover (we don't want to end up in a
> situation where 90% of drawing code in Avogadro is related to this). I was
> actually a bit unsure whether drawing those "isolated" bond segments is a
> good idea because they often end up being clipped in complicated ways.
>
Is this going into a specialized plugin, or straight into bsdyengine?
I didn't look at the code, but it seems pretty specialized and I
wondered what (if any) impact this would have where there is no
periodic boundary.
>
> Maybe Avogadro 2.0 painters could have a set of clipping planes so
> that we could more easily draw these structures? Then we could just
> use native GL clipping and emulate it somehow for the other
> paintdevices...
>
>
> I would vote for this option...
>
I think this would be reasonable, and I think virtually all rendering
engines have some form of clipping support that we could map to.

Marcus