def test_fluid_tf_equality(self):
tf.reset_default_graph()
_sess = tf.InteractiveSession()
for domain in [
Domain([8, 6], boundaries=OPEN),
Domain([8, 6], boundaries=STICKY),
Domain([8, 6], boundaries=SLIPPERY),
Domain([8, 6], boundaries=PERIODIC),
Domain([8, 6], boundaries=[PERIODIC, [OPEN, STICKY]])
]:
print('Comparing on domain %s' % (domain.boundaries, ))
np_fluid = Fluid(domain,
density=Noise(),
velocity=Noise(),
batch_size=10)
tf_fluid = constant(np_fluid)
physics = IncompressibleFlow(conserve_density=False)
for _ in range(3):
np_fluid = physics.step(np_fluid, 1.0)
tf_fluid = physics.step(tf_fluid, 1.0)
for np_tensor, tf_tensor in zip(struct.flatten(np_fluid),
struct.flatten(tf_fluid)):
tf_eval = tf_tensor.eval()
numpy.testing.assert_almost_equal(np_tensor,
tf_eval,
decimal=5)
def test_tf_worldgraph(self):
tf.reset_default_graph()
world = World()
fluid = world.add(Fluid(Domain([16, 16])))
tf_bake_graph(world,
Session(Scene.create('data', copy_calling_script=False)))
world.step()
self.assertIsInstance(fluid.state, Fluid)
self.assertIsInstance(fluid.state.density.data, numpy.ndarray)
def test_fluid_tf(self):
tf.reset_default_graph()
world = World()
fluid = Fluid(Domain([16, 16]))
world.add(fluid)
world.add(Inflow(Sphere((8, 8), radius=4)))
world.add(Obstacle(box[4:16, 0:8]))
fluid_in = fluid.copied_with(density=placeholder, velocity=placeholder)
fluid_out = world.step(fluid_in)
self.assertIsInstance(fluid_out, Fluid)
session = Session(Scene.create('data', copy_calling_script=False))
fluid = session.run(fluid_out, {fluid_in: fluid})
fluid = session.run(fluid_out, {fluid_in: fluid})
self.assertIsInstance(fluid, Fluid)