After seeing Chris Huff's bucket photons i tried some tests for using
photons on large water surfaces in outdoor scenes.  

Using large objects with photons turned out to be quite slow and therefore
i tried to split up the water surface into parts where photons are
calculated and where not.

See the results attached, the calculation times are:

#1:     
photons: 2:06
total:   11:46

#2:       
photons: 8:57
total:   22:54

#3:
photons: 1:54
total:   13:44

#4 (higher quality): 
photons: 5:23
total:   21:59

This splitting up works quite well, but i wonder if it would be useful to
include support for automatizing this in povray.  For example one could
specify an object and only inside this object photons are calculated.  

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

Post a reply to this message

Attachments:
Download 'photons01.jpg' (11 KB) Download 'photons02.jpg' (14 KB) Download 'photons03.jpg' (14 KB) Download 'photons04.jpg' (14 KB)

Preview of image 'photons01.jpg'

Preview of image 'photons02.jpg'

Preview of image 'photons03.jpg'

Preview of image 'photons04.jpg'