So, here are three images of the same scene (the green fellow now has long
hair too!).
What I wanted to show is the difference between using the technique of
reusing hairs and simply generating a hair per sample.
As you can see, the one with 7550 hairs is a lot smoother in the lengths and
has a less ragged outline, but what would you expect if every hair is
generated to properly fit the surface-normal and length, along with
wind-calculations being done accurately on each hair?
Something not easily to be seen at this size are the hairs in stomach area
of the red fellow: due to the surface normal and the large jumps from one
hair to the next, the 7550-hair-version has much smoother spreading of the
hairs due to wind, whereas the ones on the 346-hair-version bundle together
and create a small dent in the fur (which should normally be all pointing
towards the green fellow). This effect is better handled when using a larger
amount of IHairs (Interpolation-Hairs), so the 2960-hair-version looks a lot
more like the 7550-hair-version, but still uses much less RAM.
Another thing to note is that I could even use less hairs on the low-hair
versions. The long hairs are always on the top of the fellows, so I wouldn't
need short hairs pointing in that direction, and the same for the other way
round. I didn't have the patience to check on that, but I'd expect about 40%
less hairs in both versions would look the same (I've written a macro which
will write and save only the hairs actually used).
Anyways, just wanted to share this little technical insight for those
inclined to use the macros once I release them. I'm wrapping things up on
the scripting side and will only need to write a small HTML-Help (as I
always do :-) to get this done. Expect it in a few days.
Regards,
Tim
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
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