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"Christoph" <nomail@nomail> wrote:
> has anyone had success simulating realistic volume scattering objects, like
> teeth? i know a lot of work has gone into rendering realistic skin, which is
> also a volume scatterer (google BSSRDF) ... but is it possible with povray?
Scattering media is the best approach, for the most part, but it is not
optimized for the effect. It is also possible to fake it with some clever
tricks. It is also possible to use the montecarlo method with mc-pov, but I am
not aware that this patch has actually been integrated into mc-pov. Here's all
of the references I can find:
Kari Kivisalo's approach to media subsurface scattering:
http://news.povray.org/povray.binaries.images/message/%3C3B97ABD4.5E70568D%40engineer.com%3E/#%3C3B97ABD4.5E70568D%40en
gineer.com%3E
http://news.povray.org/povray.binaries.scene-files/thread/%3C3B97C908.42BE1B68%40engineer.com%3E/
Some of my tests with media:
http://news.povray.org/povray.binaries.images/thread/%3Cweb.47b1299720742c82ae42298f0%40news.povray.org%3E/?ttop=302088
&toff=550
http://news.povray.org/povray.binaries.images/thread/%3Cweb.47249824ccd73a9188727a860%40news.povray.org%3E/?ttop=302088
&toff=750
http://news.povray.org/povray.text.scene-files/thread/%3Cweb.4726c3e669db4c2888727a860%40news.povray.org%3E/
Samual Benge's proximity macros for faked subsurface-scattering:
http://news.povray.org/povray.binaries.scene-files/thread/%3C489f4610%40news.povray.org%3E/
http://news.povray.org/povray.binaries.images/thread/%3C489f82c0%40news.povray.org%3E/?ttop=302088&toff=250
http://news.povray.org/povray.binaries.images/thread/%3C489f4818%40news.povray.org%3E/?ttop=302088&toff=250
http://news.povray.org/povray.binaries.images/thread/%3C489bc01b%40news.povray.org%3E/?ttop=302088&toff=250
Fidos' montecarlo technique:
http://news.povray.org/povray.binaries.images/thread/%3Cweb.4838403f151ae76dd309f1e00%40news.povray.org%3E/?ttop=302088
&toff=400
Out of all of those, some options should present themselves, but it would be
nice if these techniques could be formalized so you didn't always have to go
searching and start by mangling someone else's scene...
- Ricky
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