Cousin Ricky <ric### [at] yahoocom> wrote:
> I have been working on my light bleeding code, adding a circular halo to
> the diffraction spikes.  But while the added glow (Spikiness 0.25) looks
> a lot better, it is dreadfully slow, taking 31 minutes for a 512 x 256
> render, versus 1.5 minutes for the spikes alone (Spikiness 1.00).  The
> issue is that halos scale with the square of the radius, while spikes
> scale linearly.
>
> Looks like I'll be investigating Sam's technique to see if I can work
> out a hybrid that won't take forever.  Sam's lb7b allows me to add my
> own diffraction pattern, while my idea has been to bleed only color
> channels in excess of 1.0.
>
> Or, I could attempt to upgrade Nathan Kopp or Chris Colefax to POV-Ray
> 3.7/3.8, but I would rather not have to track light sources--especially
> since this does not account for reflections and highlights.
>
> I'm just noticing another lens flare library on my computer, credited to
> Zeger Knaepen in my notes, though his name is not in the code anywhere.

Yes, great work indeed, the pursue is worth it: looking much more realistic with
halo.

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