Syntax:(morphangle float) Smoothly rotate the image to another angle. By default rotation causes recalculation of the whole screen. To avoid this you need to enable fast rotate mode. Don't forget to disable it later, since it slows down other animations.
A simple "rotozooming" animation:
(initstate)
(fastrotate #t)
(morphview -1.64128273713 -5.50393226816E-05 9.69332308848E-08
9.69332308834E-08)
(morphangle 300)
(usleep 10000000)
(wait)
(fastrotate #f)
Available as: command