def init_planet(filename):
"""Initialize a planet actor.
Parameters
----------
filename : str
The filename for the corresponding planet texture.
Returns
-------
planet_actor: actor
The corresponding sphere actor with texture applied.
"""
planet_file = read_viz_textures(filename)
planet_image = io.load_image(planet_file)
planet_actor = actor.texture_on_sphere(planet_image)
scene.add(planet_actor)
return planet_actor
def test_direct_sphere_mapping():
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])
# enable to see pacman on sphere
# arr[0: 2 * w, cs - 10 * w: cs + 10 * w] = np.array([255, 127, 0])
scene = window.Scene()
tsa = actor.texture_on_sphere(arr)
scene.add(tsa)
rotate(tsa, rotation=(90, 0, 1, 0))
display = window.snapshot(scene)
res = window.analyze_snapshot(display, bg_color=(0, 0, 0),
colors=[(255, 127, 0)],
find_objects=False)
npt.assert_equal(res.colors_found, [True])
def init_planet(planet_data):
"""Initialize a planet actor.
Parameters
----------
planet_data : dict
The planet_data is a dictionary, and the keys are filename(texture),
position and scale.
Returns
-------
planet_actor: actor
The corresponding sphere actor with texture applied.
"""
planet_file = read_viz_textures(planet_data['filename'])
planet_image = io.load_image(planet_file)
planet_actor = actor.texture_on_sphere(planet_image)
planet_actor.SetPosition(planet_data['position'], 0, 0)
planet_actor.SetScale(planet_data['scale'])
scene.add(planet_actor)
return planet_actor
# Create a scene to start.
scene = window.Scene()
##############################################################################
# Load an image (png, bmp, jpeg or jpg) using ``io.load_image``. In this
# example, we will use ``read_viz_textures`` to access an image of the
# Earth's surface from the fury Github after using ''fetch_viz_textures()''
# to download the available textures.
fetch_viz_textures()
filename = read_viz_textures("1_earth_8k.jpg")
image = io.load_image(filename)
##############################################################################
# Next, use ``actor.texture_on_sphere`` to add a sphere with the texture from
# your loaded image to the already existing scene.
# To add a texture to your scene as visualized on a plane, use
# ``actor.texture`` instead.
scene.add(actor.texture_on_sphere(image))
##############################################################################
# Lastly, record the scene, or set interactive to True if you would like to
# manipulate your new sphere.
interactive = False
if interactive:
window.show(scene, size=(600, 600), reset_camera=False)
window.record(scene, size=(900, 768), out_path="viz_texture.png")
def test_manifest_standard(interactive=False):
scene = window.Scene() # Setup scene
# Setup surface
surface_actor = _generate_surface()
material.manifest_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
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
# 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, 255, 0],
[0, 0, 255]])
surface = actor.contour_from_label(data, color=color)
material.manifest_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
scene.add(surface)
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
# 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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
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
# 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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
_, 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)
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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
scene.add(sq_actor)
scene.reset_camera()
scene.reset_clipping_range()
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
ft.assert_greater_equal(report.objects, 3)
scene.clear() # Reset scene
# Label setup
text_actor = actor.label("Hello")
material.manifest_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
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)
scene.clear() # Reset scene
# 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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
scene.add(tp2)
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
# 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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
scene.add(tsa)
scene.reset_camera()
scene.reset_clipping_range()
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 1)
# 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.
"""
# 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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
scene.add(slicer)
"""
"""
# 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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
scene.add(lines)
"""
"""
# 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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
scene.add(sb_actor)
"""
"""
# Axes setup
axes = actor.axes()
material.manifest_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
scene.add(axes)
"""
"""
# 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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
scene.add(dots_actor)
"""
"""
# Text3D setup
msg = 'I \nlove\n FURY'
txt_actor = actor.text_3d(msg)
material.manifest_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
scene.add(tp)
"""
"""
# 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_standard(surface_actor, ambient_level=.3,
diffuse_level=.25)
scene.add(sdf_actor)
"""
# NOTE: For these last set of actors, there is not support for PBR
# interpolation at all.
"""
# 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)
"""
if interactive:
window.show(scene)
##############################################################################
# Next, load in a texture for each of the actors. For this tutorial, we will
# be creating one textured sphere for the Earth, and another for the moon.
# Collect the Earth texture from the FURY github using ``fetch_viz_textures``
# and ``read_viz_textures``, then use ``io.load_image`` to load in the
# image.
fetch_viz_textures()
earth_filename = read_viz_textures("1_earth_8k.jpg")
earth_image = io.load_image(earth_filename)
##############################################################################
# Using ``actor.texture_on_sphere()``, create an earth_actor with your newly
# loaded texture.
earth_actor = actor.texture_on_sphere(earth_image)
##############################################################################
# Then, do the same for the moon.
moon_filename = read_viz_textures("moon-8k.jpg")
moon_image = io.load_image(moon_filename)
moon_actor = actor.texture_on_sphere(moon_image)
##############################################################################
# Add both actors to the already existing scene.
scene.add(earth_actor)
scene.add(moon_actor)
