hultquis@nas.nasa.gov (Jeff P. M. Hultquist) (11/16/90)
I recently found a bug in one of the items in "Graphics Gems". On page 463 (the code for a "virtual trackball"), the second-to-last line should read "(pi-alpha)" instead of "(alpha + pi/2)". This becomes obvious as soon as you try to implement the silly thing. As the author of this piece of foolishness, I apologize. -- jeff -- -- Jeff Hultquist hultquis@nas.nasa.gov NASA - Ames Research Center (415) 604-4970 Disclaimer: "I am not a rocket scientist."