Hi David
> It's a common misconception that back face culling is done using normals.
Aehm back face culling is most easly done by using the normals you
actually multiply the normal.z with the eye.z and if it's < 0 than you can
remove the surface. This only works with concave objects.
> Backface culling is based on the "winding" of the vertices. I think the
Which again reflects which way the normal is pointing. Because it makes a
difference in the calculation of the normal. a-b != b-a
> are wound the wrong way, the normal is opposite of what you are expecting.
> But it is winding that controls backface culling.
Which also effects the direction of your normal.
EOF,
J.D.
--
Jmark2k+1 (http://www.antiflash.net/jmark)
Test the performance of your PC online!
===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff JAVA3D-INTEREST". For general help, send email to
[EMAIL PROTECTED] and include in the body of the message "help".
