**WHAT THE HELL IS EIGENVECTORS AND WHAT ARE THEY DOING IN THAT DOCUMENT???**I''v spent 3 days and couldn''t find any normal document that gives a complete tutorial on these eigenvectors. all I came up with was that they are vectors that doesn''t change thire direction whene they are multiplied by a matrix. I don''t know about you guys, but with this explenation I couldn''t understand EXACLLY what are eigenvectors...

__I''m despret!!! I can''t build that OBBTree without these vectors!!!__*HELP!!!*