In article <3900ED9E.1838BD99@videotron.ca> , pk <thi### [at] videotronca>  
wrote:

> How does POV do to have mathematical perfect objects???
> I mean, what happens when POV reads an instruction that tells it to
> place a sphere??
> And how does it do to know what the cam sees?
> (And, an algorithm would be great, not just:"it fires ray...., etc)

I think this is too long to be explained in any newsgroup post(s).  You
should check out the "Suggested Reading" section in the POV-Ray
documentation.  Especially "An Introduction to Ray tracing" by Andrew S.
Glassner (editor) ISBN 0-12-286160-4 Academic Press 1989 should be available
in every public library with a computer books section.  And, as the title
suggests, it is an introduction - and a classic in the field.


    Thorsten


____________________________________________________
Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde

Visit POV-Ray on the web: http://mac.povray.org

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