http://breezewiki.pjsfkvpxlinjamtawaksbnnaqs2fc2mtvmozrzckxh7f3kis6yea25ad.onion/minecraft/wiki/Nether_Portal_(block)
To generate one frame of the nether portal animation: # assume time is a value from 0 to 1; a value of 1 will result in # the same image as a time value of 0 (excluding the random shimmering effect) def setup_portal_sprite ( time : float , output : Image ): random = Random ( 100 ) wide , tall = output . size for x in range ( wide ): for y in range ( tall ): n = 0.0 for dir in range ( 2 ): # All in this loop is done twice to create two spirals, # one of which offset to the topright spiral_x = ( x - dir * (...