JGA%MIT-MC@sri-unix.UUCP (03/08/84)
From: John G. Aspinall <JGA @ MIT-MC> Here's a random query... Can anyone give me a nice parametric equation describing the seam on a baseball as a curve on the surface of a sphere? John Aspinall.
jim@kovacs.UUCP (Jim Keating) (05/24/84)
> This is an old article I posted (Mar 84) which never made it to the net. If I remember correctly, someone on the east coast (Boston?) wanted info on the equation for a baseball seam. > I had trouble responding to this via mail, so I'm posting it. Sorry. > See the book "Mathematical Elements for Computer Graphics" by > Rogers and Adams, McGraw-Hill 1976, pg 118, eq. (5-8). The book > contains other similar equations and an appendix full of programs. -Jim Keating- R. Abel & Assoc. Hollywood, CA 90036 (213) 462 8100