# HBB: revised open-ended animation routine. Used to just turn
# round and round by somewhat large steps. Now, it tumbles
# back and forth smoothly.
# If 'limit_iterations' is set to a nonzero value, it'll stop after that
# many iterations (iteration_count=0 has to be set before this
# script is called)
zrot=(zrot+10)%360
xrot=(xrot+17)%180
set view (50.+30.*sin(xrot/180.*pi)),60.+45.*sin(zrot/180.*pi)
replot
iteration_count=iteration_count+1
if ((!limit_iterations) || (iteration_count<=limit_iterations)) reread