def R(seqn):
    for i in seqn:
        yield i
Determine the focal point of the view based on foxus (fx, fy),
dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/test/test_heapq.py/R--crossover with--dataset/ETHPy150Open ardekantur/pyglet/contrib/spryte/view.py/View._determine_focus