For those of us who use matrix algebra and/or quaternion math, (either by necessity or choice), Tom Hanlin was nice enough to post an informative, easy-to-read document I came across the other day that really helps make sense of something that can get very complex, very quickly-- It contains quite a bit of "C" source code that is easily translatable into PB.

The file can be found at http://www.powerbasic.com/files/pub/...ixQuat_Faq.zip

Take care!

Scott Martindale

------------------
Scott Martindale
Animation TD / Character Animator
DNA Productions, Inc
Dallas, Texas
[email protected]