from vpython import *
from time import clock
N = 10
scene.title = "{} by {} by {} = {} rotating boxes".format(N,N,N,N**3)
boxes = []
L = 6
scene.range = L
length = 0.6*L/N
height = 0.4*L/N
for x in range(N):
for y in range(N):
for z in range(N):
b = box(color=vector(x/N,y/N,z/N),
pos=vector(L*(x/(N-1)-.5),L*(y/(N-1)-.5),L*(z/(N-1)-.5)),
size=vector(length,height,length))
boxes.append(b)
t = 0
dt = 0.01
loops = 0
ctime = 0
start = clock()
N = 200
# 6.4/100
while True:
if loops == N:
s = '{:0.1f} millisecond computation per loop'.format(1000*ctime/loops)
s += '\n{:3.0f} loops per second'.format(loops/(clock()-start))
scene.caption = s
ctime = 0
loops = 0
start = clock()
rate(N)
t += dt
ct = clock()
v = length*vector(sin(t), 0, cos(t))
for b in boxes:
b.axis = v
ctime += clock()-ct
loops += 1