Derp test

from IPython.core.magic import register_line_magic
@register_line_magic
def cmd(line):
    "run a pfc command"
    pfc.command(line)

import itasca
from itasca import ball
itasca.command("""
new
domain extent -1 1 -1 1 -1 1
cmat default model linear property kn 1e1 dp_nratio 0.2
""")

origin = (0.0, 0.0, 0.0)
rad = 0.1
b =  ball.create(0.1, origin, 101)
assert b
assert b.valid()