Baseball seam curve

By Paul Bourke

January 2001

x = sin(pi/2 - (pi/2 - a) cos(t)) cos(t/2 + a sin(2 t))

y = sin(pi/2 - (pi/2 - a) cos(t)) sin(t/2 + a sin(2 t))

z = cos(pi/2 - (pi/2 - a) cos(t))

0 < t < 4 pi, a = 0.4 (for example)


Represented in Second Life

Equirectangular projection