I noticed one variable which you seem to have missed: ray direction. The 
normal variables really aren't as useful without this...I can think of a 
couple very interesting uses combining these variables.

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

Post a reply to this message