Thomas de Groot <tho### [at] degrootorg> wrote:
> Op 8-3-2023 om 14:59 schreef Mike Miller:
> > "Bald Eagle" <cre### [at] netscapenet> wrote:
> >> "Mike Miller" <mil### [at] gmailcom> wrote:
> >>> The 'populate' macros are slow to process with the amount of objects I'm using.
> >>> Not well optimized - could us some type of culling to remove unseen plants.
> >> I tried something like this - I determined what the view frustum was, and then
> >> IIRC did some my own home-brew insidedness tests.
> > 87
> >> ce70b1652a4dcc437ac910%40news.povray.org%3E
> >> - BW
> > Thanks BW.
> > I like that idea - using the cameras frustum shape for an inside/outside test.
> > Using the cameras' hither and yon planes for space partitioning. BSP?
> In another age, long, long ago early in this century, Gilles Tran wrote
> a macro doing just that. I have always used it since then. I attach it
> here. I must have a demo scene somewhere too... I shall try to find it
> Note: The prefix GT_ is a code referring to the original author. It is a
> way I use to remember who wrote the code ;-)
Thanks Thomas. Very nice - big help.
Objects not seen by the camera but reflecting in visible surfaces could present
a problem. I guess you could 'add-back' objects not seen but within a distance
of the frustum - if that object type was important to the reflections in the
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