def test_manifest_pbr(interactive=False):
scene = window.Scene() # Setup scene
# Setup surface
surface_actor = _generate_surface()
material.manifest_pbr(surface_actor)
scene.add(surface_actor)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 1)
scene.clear() # Reset scene
# Contour from roi setup
data = np.zeros((50, 50, 50))
data[20:30, 25, 25] = 1.
data[25, 20:30, 25] = 1.
affine = np.eye(4)
surface = actor.contour_from_roi(data, affine, color=np.array([1, 0, 1]))
material.manifest_pbr(surface)
scene.add(surface)
scene.reset_camera()
scene.reset_clipping_range()
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 1)
scene.clear() # Reset scene
# Streamtube setup
data1 = np.array([[0, 0, 0], [1, 1, 1], [2, 2, 2.]])
data2 = data1 + np.array([0.5, 0., 0.])
data = [data1, data2]
colors = np.array([[1, 0, 0], [0, 0, 1.]])
tubes = actor.streamtube(data, colors, linewidth=.1)
material.manifest_pbr(tubes)
scene.add(tubes)
scene.reset_camera()
scene.reset_clipping_range()
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 2)
scene.clear() # Reset scene
# Axes setup
axes = actor.axes()
material.manifest_pbr(axes)
scene.add(axes)
scene.reset_camera()
scene.reset_clipping_range()
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 1)
scene.clear() # Reset scene
# ODF slicer setup
if have_dipy:
from dipy.data import get_sphere
from tempfile import mkstemp
sphere = get_sphere('symmetric362')
shape = (11, 11, 11, sphere.vertices.shape[0])
fid, fname = mkstemp(suffix='_odf_slicer.mmap')
odfs = np.memmap(fname, dtype=np.float64, mode='w+', shape=shape)
odfs[:] = 1
affine = np.eye(4)
mask = np.ones(odfs.shape[:3])
mask[:4, :4, :4] = 0
odfs[..., 0] = 1
odf_actor = actor.odf_slicer(odfs, affine, mask=mask, sphere=sphere,
scale=.25, colormap='blues')
material.manifest_pbr(odf_actor)
k = 5
I, J, _ = odfs.shape[:3]
odf_actor.display_extent(0, I, 0, J, k, k)
odf_actor.GetProperty().SetOpacity(1.0)
scene.add(odf_actor)
scene.reset_camera()
scene.reset_clipping_range()
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 11 * 11)
scene.clear() # Reset scene
# Tensor slicer setup
if have_dipy:
from dipy.data import get_sphere
sphere = get_sphere('symmetric724')
evals = np.array([1.4, .35, .35]) * 10 ** (-3)
evecs = np.eye(3)
mevals = np.zeros((3, 2, 4, 3))
mevecs = np.zeros((3, 2, 4, 3, 3))
mevals[..., :] = evals
mevecs[..., :, :] = evecs
affine = np.eye(4)
scene = window.Scene()
tensor_actor = actor.tensor_slicer(mevals, mevecs, affine=affine,
sphere=sphere, scale=.3)
material.manifest_pbr(tensor_actor)
_, J, K = mevals.shape[:3]
tensor_actor.display_extent(0, 1, 0, J, 0, K)
scene.add(tensor_actor)
scene.reset_camera()
scene.reset_clipping_range()
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 4)
# TODO: Rotate to test
# npt.assert_equal(report.objects, 4 * 2 * 2)
scene.clear() # Reset scene
# Point setup
points = np.array([[0, 0, 0], [0, 1, 0], [1, 0, 0]])
colors = np.array([[1, 0, 0], [0, 1, 0], [0, 0, 1]])
opacity = 0.5
points_actor = actor.point(points, colors, opacity=opacity)
material.manifest_pbr(points_actor)
scene.add(points_actor)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 3)
scene.clear() # Reset scene
# Sphere setup
xyzr = np.array([[0, 0, 0, 10], [100, 0, 0, 25], [200, 0, 0, 50]])
colors = np.array([[1, 0, 0, 0.3], [0, 1, 0, 0.4], [0, 0, 1., 0.99]])
opacity = 0.5
sphere_actor = actor.sphere(centers=xyzr[:, :3], colors=colors[:],
radii=xyzr[:, 3], opacity=opacity)
material.manifest_pbr(sphere_actor)
scene.add(sphere_actor)
scene.reset_camera()
scene.reset_clipping_range()
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 3)
scene.clear() # Reset scene
# Advanced geometry actors setup (Arrow, cone, cylinder)
xyz = np.array([[0, 0, 0], [50, 0, 0], [100, 0, 0]])
dirs = np.array([[0, 1, 0], [1, 0, 0], [0, 0.5, 0.5]])
colors = np.array([[1, 0, 0, 0.3], [0, 1, 0, 0.4], [1, 1, 0, 1]])
heights = np.array([5, 7, 10])
actor_list = [[actor.cone, {'directions': dirs, 'resolution': 8}],
[actor.arrow, {'directions': dirs, 'resolution': 9}],
[actor.cylinder, {'directions': dirs}]]
for act_func, extra_args in actor_list:
aga_actor = act_func(centers=xyz, colors=colors[:], heights=heights,
**extra_args)
material.manifest_pbr(aga_actor)
scene.add(aga_actor)
scene.reset_camera()
scene.reset_clipping_range()
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 3)
scene.clear()
# Basic geometry actors (Box, cube, frustum, octagonalprism, rectangle,
# square)
centers = np.array([[4, 0, 0], [0, 4, 0], [0, 0, 0]])
colors = np.array([[1, 0, 0, 0.4], [0, 1, 0, 0.8], [0, 0, 1, 0.5]])
directions = np.array([[1, 1, 0]])
scale_list = [1, 2, (1, 1, 1), [3, 2, 1], np.array([1, 2, 3]),
np.array([[1, 2, 3], [1, 3, 2], [3, 1, 2]])]
actor_list = [[actor.box, {}], [actor.cube, {}], [actor.frustum, {}],
[actor.octagonalprism, {}], [actor.rectangle, {}],
[actor.square, {}]]
for act_func, extra_args in actor_list:
for scale in scale_list:
scene = window.Scene()
bga_actor = act_func(centers=centers, directions=directions,
colors=colors, scales=scale, **extra_args)
material.manifest_pbr(bga_actor)
scene.add(bga_actor)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
msg = 'Failed with {}, scale={}'.format(act_func.__name__, scale)
npt.assert_equal(report.objects, 3, err_msg=msg)
scene.clear()
# Cone setup using vertices
centers = np.array([[0, 0, 0], [20, 0, 0], [40, 0, 0]])
directions = np.array([[0, 1, 0], [1, 0, 0], [0, 0, 1]])
colors = np.array([[1, 0, 0, 0.3], [0, 1, 0, 0.4], [0, 0, 1., 0.99]])
vertices = np.array([[0.0, 0.0, 0.0], [0.0, 10.0, 0.0],
[10.0, 0.0, 0.0], [0.0, 0.0, 10.0]])
faces = np.array([[0, 1, 3], [0, 1, 2]])
cone_actor = actor.cone(centers=centers, directions=directions,
colors=colors[:], vertices=vertices, faces=faces)
material.manifest_pbr(cone_actor)
scene.add(cone_actor)
scene.reset_camera()
scene.reset_clipping_range()
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 3)
scene.clear() # Reset scene
# Superquadric setup
centers = np.array([[8, 0, 0], [0, 8, 0], [0, 0, 0]])
colors = np.array([[1, 0, 0], [0, 1, 0], [0, 0, 1]])
directions = np.random.rand(3, 3)
scales = [1, 2, 3]
roundness = np.array([[1, 1], [1, 2], [2, 1]])
sq_actor = actor.superquadric(centers, roundness=roundness,
directions=directions,
colors=colors.astype(np.uint8),
scales=scales)
material.manifest_pbr(sq_actor)
scene.add(sq_actor)
scene.reset_camera()
scene.reset_clipping_range()
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 3)
scene.clear() # Reset scene
# Label setup
text_actor = actor.label("Hello")
material.manifest_pbr(text_actor)
scene.add(text_actor)
scene.reset_camera()
scene.reset_clipping_range()
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 5)
# NOTE: From this point on, these actors don't have full support for PBR
# interpolation. This is, the test passes but there is no evidence of the
# desired effect.
"""
# Line setup
data1 = np.array([[0, 0, 0], [1, 1, 1], [2, 2, 2.]])
data2 = data1 + np.array([0.5, 0., 0.])
data = [data1, data2]
colors = np.array([[1, 0, 0], [0, 0, 1.]])
lines = actor.line(data, colors, linewidth=5)
material.manifest_pbr(lines)
scene.add(lines)
"""
"""
# Peak slicer setup
_peak_dirs = np.array([[1, 0, 0], [0, 1, 0], [0, 0, 1]], dtype='f4')
# peak_dirs.shape = (1, 1, 1) + peak_dirs.shape
peak_dirs = np.zeros((11, 11, 11, 3, 3))
peak_dirs[:, :, :] = _peak_dirs
peak_actor = actor.peak_slicer(peak_dirs)
material.manifest_pbr(peak_actor)
scene.add(peak_actor)
"""
"""
# Dots setup
points = np.array([[0, 0, 0], [0, 1, 0], [1, 0, 0]])
dots_actor = actor.dots(points, color=(0, 255, 0))
material.manifest_pbr(dots_actor)
scene.add(dots_actor)
"""
"""
# Texture setup
arr = (255 * np.ones((512, 212, 4))).astype('uint8')
arr[20:40, 20:40, :] = np.array([255, 0, 0, 255], dtype='uint8')
tp2 = actor.texture(arr)
material.manifest_pbr(tp2)
scene.add(tp2)
"""
"""
# Texture on sphere setup
arr = 255 * np.ones((810, 1620, 3), dtype='uint8')
rows, cols, _ = arr.shape
rs = rows // 2
cs = cols // 2
w = 150 // 2
arr[rs - w: rs + w, cs - 10 * w: cs + 10 * w] = np.array([255, 127, 0])
tsa = actor.texture_on_sphere(arr)
material.manifest_pbr(tsa)
scene.add(tsa)
"""
"""
# SDF setup
centers = np.array([[2, 0, 0], [0, 2, 0], [0, 0, 0]]) * 11
colors = np.array([[1, 0, 0], [0, 1, 0], [0, 0, 1]])
directions = np.array([[0, 1, 0], [1, 0, 0], [0, 0, 1]])
scales = [1, 2, 3]
primitive = ['sphere', 'ellipsoid', 'torus']
sdf_actor = actor.sdf(centers, directions=directions, colors=colors,
primitives=primitive, scales=scales)
material.manifest_pbr(sdf_actor)
scene.add(sdf_actor)
"""
# NOTE: For these last set of actors, there is not support for PBR
# interpolation at all.
"""
# Setup slicer
data = (255 * np.random.rand(50, 50, 50))
affine = np.eye(4)
slicer = actor.slicer(data, affine, value_range=[data.min(), data.max()])
slicer.display(None, None, 25)
material.manifest_pbr(slicer)
scene.add(slicer)
"""
"""
# Contour from label setup
data = np.zeros((50, 50, 50))
data[5:15, 1:10, 25] = 1.
data[25:35, 1:10, 25] = 2.
data[40:49, 1:10, 25] = 3.
color = np.array([[255, 0, 0, 0.6],
[0, 255, 0, 0.5],
[0, 0, 255, 1.0]])
surface = actor.contour_from_label(data, color=color)
material.manifest_pbr(surface)
scene.add(surface)
"""
"""
# Scalar bar setup
lut = actor.colormap_lookup_table(
scale_range=(0., 100.), hue_range=(0., 0.1), saturation_range=(1, 1),
value_range=(1., 1))
sb_actor = actor.scalar_bar(lut, ' ')
material.manifest_pbr(sb_actor)
scene.add(sb_actor)
"""
"""
# Billboard setup
centers = np.array([[0, 0, 0], [5, -5, 5], [-7, 7, -7], [10, 10, 10],
[10.5, 11.5, 11.5], [12, -12, -12], [-17, 17, 17],
[-22, -22, 22]])
colors = np.array([[1, 1, 0], [0, 0, 0], [1, 0, 1], [0, 0, 1], [1, 1, 1],
[1, 0, 0], [0, 1, 0], [0, 1, 1]])
scales = [6, .4, 1.2, 1, .2, .7, 3, 2]
"""
fake_sphere = \
"""
float len = length(point);
float radius = 1.;
if(len > radius)
discard;
vec3 normalizedPoint = normalize(vec3(point.xy, sqrt(1. - len)));
vec3 direction = normalize(vec3(1., 1., 1.));
float df_1 = max(0, dot(direction, normalizedPoint));
float sf_1 = pow(df_1, 24);
fragOutput0 = vec4(max(df_1 * color, sf_1 * vec3(1)), 1);
"""
"""
billboard_actor = actor.billboard(centers, colors=colors, scales=scales,
fs_impl=fake_sphere)
material.manifest_pbr(billboard_actor)
scene.add(billboard_actor)
"""
"""
# Text3D setup
msg = 'I \nlove\n FURY'
txt_actor = actor.text_3d(msg)
material.manifest_pbr(txt_actor)
scene.add(txt_actor)
"""
"""
# Figure setup
arr = (255 * np.ones((512, 212, 4))).astype('uint8')
arr[20:40, 20:40, 3] = 0
tp = actor.figure(arr)
material.manifest_pbr(tp)
scene.add(tp)
"""
if interactive:
window.show(scene)
doa = [0, 1, .5]
###############################################################################
# The following process gets the normals of the actor and computes the tangents
# that are aligned to the provided DoA. Then it registers those tangents to the
# actor.
normals = normals_from_actor(sphere)
tangents = tangents_from_direction_of_anisotropy(normals, doa)
tangents_to_actor(sphere, tangents)
###############################################################################
# With the tangents computed and in place, we have all the elements needed to
# add some material properties to the actor.
pbr_params = material.manifest_pbr(sphere)
###############################################################################
# Our actor is now ready to be added to the scene.
scene.add(sphere)
###############################################################################
# Let's setup now the window and the UI.
show_m = window.ShowManager(scene=scene,
size=(1920, 1080),
reset_camera=False,
order_transparent=True)
show_m.initialize()
num_values = 11
for i, mp in enumerate(material_params):
color = mp[0]
params = mp[1]
center = [[0, -5 * i, 0]]
for j in range(num_values):
center[0][0] = -25 + 5 * j
sphere = actor.sphere(center, color, radii=2, theta=32, phi=32)
normals = normals_from_actor(sphere)
tangents = tangents_from_direction_of_anisotropy(normals, (0, 1, .5))
tangents_to_actor(sphere, tangents)
keys = list(params)
params[keys[0]] = np.round(0.1 * j, decimals=1)
material.manifest_pbr(sphere, **params)
scene.add(sphere)
###############################################################################
# For interpretability purposes we will add some labels to guide us through our
# visualization.
labels = [
'Metallic', 'Roughness', 'Anisotropy', 'Anisotropy Rotation',
'Coat Strength', 'Coat Roughness'
]
for i, l in enumerate(labels):
pos = [-40, -5 * i, 0]
label = actor.vector_text(l, pos=pos, scale=(.8, .8, .8), color=(0, 0, 0))
scene.add(label)
def test_manifest_pbr_vtk():
# Test non-supported property
test_actor = actor.text_3d('Test')
npt.assert_warns(UserWarning, material.manifest_pbr, test_actor)
# Test non-supported PBR interpolation
test_actor = actor.scalar_bar()
npt.assert_warns(UserWarning, material.manifest_pbr, test_actor)
# Create tmp dir to save and query images
# with TemporaryDirectory() as out_dir:
# tmp_fname = os.path.join(out_dir, 'tmp_img.png') # Tmp image to test
scene = window.Scene() # Setup scene
test_actor = actor.square(np.array([[0, 0, 0]]), directions=(0, 0, 0),
colors=(0, 0, 1))
scene.add(test_actor)
# Test basic actor
# window.record(scene, out_path=tmp_fname, size=(200, 200),
# reset_camera=True)
ss = window.snapshot(scene, size=(200, 200))
# npt.assert_equal(os.path.exists(tmp_fname), True)
# ss = load_image(tmp_fname)
actual = ss[100, 100, :] / 1000
desired = np.array([0, 0, 255]) / 1000
npt.assert_array_almost_equal(actual, desired, decimal=2)
actual = ss[40, 40, :] / 1000
npt.assert_array_almost_equal(actual, desired, decimal=2)
# Test default parameters
material.manifest_pbr(test_actor)
ss = window.snapshot(scene, size=(200, 200))
# window.record(scene, out_path=tmp_fname, size=(200, 200),
# reset_camera=True)
# npt.assert_equal(os.path.exists(tmp_fname), True)
# ss = load_image(tmp_fname)
actual = ss[100, 100, :] / 1000
desired = np.array([66, 66, 165]) / 1000
npt.assert_array_almost_equal(actual, desired, decimal=2)
actual = ss[40, 40, :] / 1000
desired = np.array([40, 40, 157]) / 1000
npt.assert_array_almost_equal(actual, desired, decimal=2)
# Test roughness
material.manifest_pbr(test_actor, roughness=0)
ss = window.snapshot(scene, size=(200, 200))
# window.record(scene, out_path=tmp_fname, size=(200, 200),
# reset_camera=True)
# npt.assert_equal(os.path.exists(tmp_fname), True)
# ss = load_image(tmp_fname)
actual = ss[100, 100, :] / 1000
desired = np.array([0, 0, 155]) / 1000
npt.assert_array_almost_equal(actual, desired, decimal=2)
actual = ss[40, 40, :] / 1000
desired = np.array([0, 0, 153]) / 1000
npt.assert_array_almost_equal(actual, desired, decimal=2)
# Test metallicity
material.manifest_pbr(test_actor, metallic=1)
ss = window.snapshot(scene, size=(200, 200))
# window.record(scene, out_path=tmp_fname, size=(200, 200),
# reset_camera=True)
# npt.assert_equal(os.path.exists(tmp_fname), True)
# ss = load_image(tmp_fname)
actual = ss[100, 100, :] / 1000
desired = np.array([0, 0, 255]) / 1000
npt.assert_array_almost_equal(actual, desired, decimal=2)
actual = ss[40, 40, :] / 1000
desired = np.array([0, 0, 175]) / 1000
npt.assert_array_almost_equal(actual, desired, decimal=2)