def import_as_compound(event=None):
    compound = read_step_file(os.path.join('.', 'models', 'as1_pe_203.stp'))
    t = Topo(compound)
    display.EraseAll()
    for solid in t.solids():
        color = Quantity_Color(random.random(),
                               random.random(),
                               random.random(),
                               Quantity_TOC_RGB)
        display.DisplayColoredShape(solid, color)
    display.FitAll()
print("  * single thread runtime: %.2fs" % delta_single)
print("  * multi thread runtime: %.2fs" % delta_multi)
print("  * muti/single=%.2f%%" % (delta_multi / delta_single * 100))

# TEST 2 : other step, with a loop over each subshape
print("TEST 2 ===")
shp3 = read_step_file(
    os.path.join('..', 'examples', 'models',
                 'RC_Buggy_2_front_suspension.stp'))
shp4 = read_step_file(
    os.path.join('..', 'examples', 'models',
                 'RC_Buggy_2_front_suspension.stp'))

topo1 = Topo(shp3)
t4 = time.monotonic()
for solid in topo1.solids():
    o = Tesselator(solid)
    o.Compute(parallel=False, mesh_quality=0.5)
t5 = time.monotonic()
delta_single = t5 - t4

topo2 = Topo(shp4)
t6 = time.monotonic()
for solid in topo2.solids():
    o = Tesselator(solid)
    o.Compute(parallel=True, mesh_quality=0.5)
t7 = time.monotonic()
delta_multi = t7 - t6

print("Test 2 Results:")
print("  * single thread runtime: %.2fs" % delta_single)