def test_colors(interactive=False):
peak_dirs, peak_vals, peak_affine = generate_peaks()
valid_mask = np.abs(peak_dirs).max(axis=(-2, -1)) > 0
indices = np.nonzero(valid_mask)
scene = window.Scene()
colors = [[1, 0, 0], [1, 0, 0], [1, 0, 0], [0, 1, 0], [0, 0, 1], [0, 0, 1],
[1, 1, 0]]
peak_actor = PeakActor(peak_dirs,
indices,
values=peak_vals,
affine=peak_affine,
colors=colors)
scene.add(peak_actor)
scene.azimuth(30)
scene.reset_camera()
scene.reset_clipping_range()
if interactive:
window.show(scene)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr, colors=colors)
npt.assert_equal(report.objects, 4)
def test_basic_geometry_actor(interactive=False):
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.cube, {}],
[actor.box, {}],
[actor.square, {}],
[actor.rectangle, {}],
[actor.frustum, {}],
[actor.octagonalprism, {}],
[actor.pentagonalprism, {}],
[actor.triangularprism, {}],
[actor.rhombicuboctahedron, {}]]
for act_func, extra_args in actor_list:
for scale in scale_list:
scene = window.Scene()
g_actor = act_func(centers=centers, colors=colors,
directions=directions, scales=scale,
**extra_args)
scene.add(g_actor)
if interactive:
window.show(scene)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr, colors=colors)
msg = 'Failed with {}, scale={}'.format(act_func.__name__, scale)
npt.assert_equal(report.objects, 3, err_msg=msg)
def plot_each_shell(ms, plot_sym_vecs=True, use_sphere=True, same_color=False,
rad=0.025, opacity=1.0, ofile=None, ores=(300, 300)):
"""
Plot each shell
Parameters
----------
ms: list of numpy.ndarray
bvecs for each bval
plot_sym_vecs: boolean
Plot symmetrical vectors
use_sphere: boolean
rendering of the sphere
same_color: boolean
use same color for all shell
rad: float
radius of each point
opacity: float
opacity for the shells
ofile: str
output filename
ores: tuple
resolution of the output png
Return
------
"""
if len(ms) > 10:
vtkcolors = fury.colormap.distinguishable_colormap(nb_colors=len(ms))
if use_sphere:
sphere = get_sphere('symmetric724')
shape = (1, 1, 1, sphere.vertices.shape[0])
fid, fname = mkstemp(suffix='_odf_slicer.mmap')
odfs = np.memmap(fname, dtype=np.float64, mode='w+', shape=shape)
odfs[:] = 1
odfs[..., 0] = 1
affine = np.eye(4)
for i, shell in enumerate(ms):
if same_color:
i = 0
ren = window.Renderer()
ren.SetBackground(1, 1, 1)
if use_sphere:
sphere_actor = actor.odf_slicer(odfs, affine, sphere=sphere,
colormap='winter', scale=1.0,
opacity=opacity)
ren.add(sphere_actor)
pts_actor = actor.point(shell, vtkcolors[i], point_radius=rad)
ren.add(pts_actor)
if plot_sym_vecs:
pts_actor = actor.point(-shell, vtkcolors[i], point_radius=rad)
ren.add(pts_actor)
window.show(ren)
if ofile:
window.snapshot(ren, fname=ofile + '_shell_' + str(i) + '.png',
size=ores)
def main():
parser = _build_args_parser()
args = parser.parse_args()
assert_inputs_exist(parser, [args.tractogram])
assert_outputs_exist(parser, args, [], [args.save])
tracts_format = detect_format(args.tractogram)
if tracts_format is not TrkFile:
raise ValueError("Invalid input streamline file format " +
"(must be trk): {0}".format(args.tractogram_filename))
# Load files and data
trk = TrkFile.load(args.tractogram)
tractogram = trk.tractogram
streamlines = tractogram.streamlines
if 'seeds' not in tractogram.data_per_streamline:
parser.error('Tractogram does not contain seeds')
seeds = tractogram.data_per_streamline['seeds']
# Make display objects
streamlines_actor = actor.line(streamlines)
points = actor.dots(seeds, color=(1., 1., 1.))
# Add display objects to canvas
r = window.Renderer()
r.add(streamlines_actor)
r.add(points)
# Show and record if needed
if args.save is not None:
window.record(r, out_path=args.save, size=(1000, 1000))
window.show(r)
def test_lookup_colormap(interactive=False):
peak_dirs, peak_vals, peak_affine = generate_peaks()
valid_mask = np.abs(peak_dirs).max(axis=(-2, -1)) > 0
indices = np.nonzero(valid_mask)
scene = window.Scene()
colors = [.0, .1, .2, .5, .8, .9, 1]
hue = (0, 1) # Red to blue
saturation = (0, 1) # White to full saturation
lut_cmap = actor.colormap_lookup_table(hue_range=hue,
saturation_range=saturation)
peak_actor = PeakActor(peak_dirs,
indices,
values=peak_vals,
affine=peak_affine,
colors=colors,
lookup_colormap=lut_cmap)
scene.add(peak_actor)
scene.azimuth(30)
scene.reset_camera()
scene.reset_clipping_range()
if interactive:
window.show(scene)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 4)
def test_replace_shader_in_actor(interactive=False):
scene = window.Scene()
test_actor = generate_points()
scene.add(test_actor)
if interactive:
window.show(scene)
ss = window.snapshot(scene, size=(200, 200))
actual = ss[40, 140, :]
npt.assert_array_equal(actual, [0, 0, 0])
actual = ss[140, 40, :]
npt.assert_array_equal(actual, [0, 0, 0])
actual = ss[40, 40, :]
npt.assert_array_equal(actual, [0, 0, 0])
scene.clear()
replace_shader_in_actor(test_actor, 'geometry', geometry_code)
scene.add(test_actor)
if interactive:
window.show(scene)
ss = window.snapshot(scene, size=(200, 200))
actual = ss[40, 140, :]
npt.assert_array_equal(actual, [255, 0, 0])
actual = ss[140, 40, :]
npt.assert_array_equal(actual, [0, 255, 0])
actual = ss[40, 40, :]
npt.assert_array_equal(actual, [0, 0, 255])
def test_dots(interactive=False):
points = np.array([[0, 0, 0], [0, 1, 0], [1, 0, 0]])
dots_actor = actor.dots(points, color=(0, 255, 0))
scene = window.Scene()
scene.add(dots_actor)
scene.reset_camera()
scene.reset_clipping_range()
if interactive:
window.show(scene, reset_camera=False)
npt.assert_equal(scene.GetActors().GetNumberOfItems(), 1)
extent = scene.GetActors().GetLastActor().GetBounds()
npt.assert_equal(extent, (0.0, 1.0, 0.0, 1.0, 0.0, 0.0))
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr, colors=(0, 255, 0))
npt.assert_equal(report.objects, 3)
# Test one point
points = np.array([0, 0, 0])
dot_actor = actor.dots(points, color=(0, 0, 255))
scene.clear()
scene.add(dot_actor)
scene.reset_camera()
scene.reset_clipping_range()
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr, colors=(0, 0, 255))
npt.assert_equal(report.objects, 1)
def main():
parser = _build_arg_parser()
args = parser.parse_args()
assert_inputs_exist(parser, [args.tractogram])
assert_outputs_exist(parser, args, [], [args.save])
tracts_format = detect_format(args.tractogram)
if tracts_format is not TrkFile:
raise ValueError("Invalid input streamline file format " +
"(must be trk): {0}".format(args.tractogram_filename))
# Load files and data. TRKs can have 'same' as reference
tractogram = load_tractogram(args.tractogram, 'same')
# Streamlines are saved in RASMM but seeds are saved in VOX
# This might produce weird behavior with non-iso
tractogram.to_vox()
streamlines = tractogram.streamlines
if 'seeds' not in tractogram.data_per_streamline:
parser.error('Tractogram does not contain seeds')
seeds = tractogram.data_per_streamline['seeds']
# Make display objects
streamlines_actor = actor.line(streamlines)
points = actor.dots(seeds, color=(1., 1., 1.))
# Add display objects to canvas
s = window.Scene()
s.add(streamlines_actor)
s.add(points)
# Show and record if needed
if args.save is not None:
window.record(s, out_path=args.save, size=(1000, 1000))
window.show(s)
def test_shader_to_actor(interactive=False):
cube = generate_cube_with_effect()
scene = window.Scene()
scene.add(cube)
if interactive:
scene.add(actor.axes())
window.show(scene)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 1)
# test errors
npt.assert_raises(ValueError, shader_to_actor, cube, "error", vertex_impl)
npt.assert_raises(ValueError, shader_to_actor, cube, "geometry",
vertex_impl)
npt.assert_raises(ValueError,
shader_to_actor,
cube,
"vertex",
vertex_impl,
block="error")
npt.assert_raises(ValueError, replace_shader_in_actor, cube, "error",
vertex_impl)
def test_stick(interactive=False):
molecule = mol.Molecule()
mol.add_atom(molecule, 6, 0, 0, 0)
mol.add_atom(molecule, 6, 2, 0, 0)
# Test errors for inadequate bonding data
npt.assert_raises(ValueError, mol.stick, molecule)
mol.add_bond(molecule, 0, 1, 1)
colormodes = ['discrete', 'single']
bond_thickness = [0.1, 0.12]
table = mol.PTable()
colors = np.array([[table.atom_color(6)],
[[150/255, 150/255, 150/255],
[50/255, 50/255, 50/255]]], dtype=object)
scene = window.Scene()
for i, colormode in enumerate(colormodes):
test_actor = mol.stick(molecule, colormode, bond_thickness[i])
scene.add(test_actor)
scene.reset_camera()
scene.reset_clipping_range()
if interactive:
window.show(scene)
npt.assert_equal(scene.GetActors().GetNumberOfItems(), 1)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr, colors=colors[i])
npt.assert_equal(report.objects, 1)
scene.clear()
# Testing warnings
npt.assert_warns(UserWarning, mol.stick, molecule, 'multiple')
def test_vertices_from_actor(interactive=False):
expected = np.array([[1.5, -0.5, 0.], [1.5, 0.5, 0], [2.5, 0.5, 0],
[2.5, -0.5, 0], [-1, 1, 0], [-1, 3, 0], [1, 3, 0],
[1, 1, 0], [-0.5, -0.5, 0], [-0.5, 0.5, 0],
[0.5, 0.5, 0], [0.5, -0.5, 0]])
centers = np.array([[2, 0, 0], [0, 2, 0], [0, 0, 0]])
colors = np.array([[255, 0, 0], [0, 255, 0], [0, 0, 255]])
scales = [1, 2, 1]
verts, faces = fp.prim_square()
res = fp.repeat_primitive(verts,
faces,
centers=centers,
colors=colors,
scales=scales)
big_verts = res[0]
big_faces = res[1]
big_colors = res[2]
actr = get_actor_from_primitive(big_verts, big_faces, big_colors)
actr.GetProperty().BackfaceCullingOff()
if interactive:
scene = window.Scene()
scene.add(actor.axes())
scene.add(actr)
window.show(scene)
res_vertices = vertices_from_actor(actr)
npt.assert_array_almost_equal(expected, res_vertices)
def test_billboard_actor(interactive=False):
scene = window.Scene()
scene.background((1, 1, 1))
centers = np.array([[2, 0, 0], [0, 2, 0], [0, 0, 0]])
colors = np.array([[255, 0, 0], [0, 255, 0], [0, 0, 255]])
scale = [1, 2, 1]
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 = max(0, dot(direction, normalizedPoint));
float sf = pow(df, 24);
fragOutput0 = vec4(max(df * color, sf * vec3(1)), 1);
"""
billboard_actor = actor.billboard(centers,
colors=colors.astype(np.uint8),
scale=scale,
fs_impl=fake_sphere)
scene.add(billboard_actor)
scene.add(actor.axes())
if interactive:
window.show(scene)
def test_billboard_actor(interactive=False):
scene = window.Scene()
scene.background((1, 1, 1))
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)
scene.add(billboard_actor)
scene.add(actor.axes())
if interactive:
window.show(scene)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr, colors=colors)
npt.assert_equal(report.objects, 8)
def test_marker_actor(interactive=False):
scene = window.Scene()
scene.background((1, 1, 1))
centers_3do = np.array([[4, 0, 0], [4, 4, 0], [4, 8, 0]])
markers_2d = ['o', 's', 'd', '^', 'p', 'h', 's6', 'x', '+']
center_markers_2d = np.array(
[[0, i*2, 0] for i in range(len(markers_2d))])
fake_spheres = actor.markers(
centers_3do,
colors=(0, 1, 0),
scales=1,
marker='3d'
)
markers_2d = actor.markers(
center_markers_2d,
colors=(0, 1, 0),
scales=1,
marker=markers_2d
)
scene.add(fake_spheres)
scene.add(markers_2d)
if interactive:
window.show(scene)
arr = window.snapshot(scene)
colors = np.array([[0, 1, 0] for i in range(12)])
report = window.analyze_snapshot(arr, colors=colors)
npt.assert_equal(report.objects, 12)
def test_sphere_cpk(interactive=False):
atomic_numbers, atom_coords = get_default_molecular_info()
molecule = mol.Molecule(atomic_numbers, atom_coords)
table = mol.PTable()
colormodes = ['discrete', 'single']
colors = np.array([[table.atom_color(1), table.atom_color(6)],
[[150/255, 250/255, 150/255]]], dtype=object)
scene = window.Scene()
for i, colormode in enumerate(colormodes):
test_actor = mol.sphere_cpk(molecule, colormode)
scene.add(test_actor)
scene.reset_camera()
scene.reset_clipping_range()
if interactive:
window.show(scene)
npt.assert_equal(scene.GetActors().GetNumberOfItems(), 1)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr, colors=colors[i])
npt.assert_equal(report.objects, 1)
scene.clear()
# Testing warnings
npt.assert_warns(UserWarning, mol.sphere_cpk, molecule, 'multiple')
def test_spheres(interactive=False):
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]])
scene = window.Scene()
sphere_actor = actor.sphere(centers=xyzr[:, :3],
colors=colors[:],
radii=xyzr[:, 3])
scene.add(sphere_actor)
if interactive:
window.show(scene, order_transparent=True)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr, colors=colors)
npt.assert_equal(report.objects, 3)
# test with an unique color for all centers
scene.clear()
sphere_actor = actor.sphere(centers=xyzr[:, :3],
colors=np.array([1, 0, 0]),
radii=xyzr[:, 3])
scene.add(sphere_actor)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr, colors=(1, 0, 0))
npt.assert_equal(report.colors_found, [True])
def test_contour_from_label(interactive=False):
# Render volumne
scene = window.Scene()
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)
scene.add(surface)
scene.reset_camera()
scene.reset_clipping_range()
if interactive:
window.show(scene)
# Test Errors
with npt.assert_raises(ValueError):
actor.contour_from_label(data, color=np.array([1, 2, 3]))
actor.contour_from_label(np.ones(50))
# Test binarization
scene2 = window.Scene()
data2 = np.zeros((50, 50, 50))
data2[20:30, 25, 25] = 1.
data2[25, 20:30, 25] = 2.
color2 = np.array([[255, 0, 255], [255, 255, 0]])
surface2 = actor.contour_from_label(data2, color=color2)
scene2.add(surface2)
scene2.reset_camera()
scene2.reset_clipping_range()
if interactive:
window.show(scene2)
arr = window.snapshot(scene,
'test_surface.png',
offscreen=True,
order_transparent=False)
arr2 = window.snapshot(scene2,
'test_surface2.png',
offscreen=True,
order_transparent=True)
report = window.analyze_snapshot(arr,
colors=[(255, 0, 0), (0, 255, 0),
(0, 0, 255)],
find_objects=True)
report2 = window.analyze_snapshot(arr2, find_objects=True)
npt.assert_equal(report.objects, 3)
npt.assert_equal(report2.objects, 1)
actor.contour_from_label(data)
def show_atlas_target_graph(atlas, target, out_path, interactive=True):
ren = window.Scene()
ren.SetBackground(1, 1, 1)
ren.add(actor.line(atlas, colors=(1, 0, 1))) # Magenta
ren.add(actor.line(target, colors=(1, 1, 0))) # Yellow
#window.record(ren, out_path=out_path, size=(600, 600))
if interactive:
window.show(ren)
def test_polydata_polygon(interactive=False):
# Create a cube
my_triangles = np.array([[0, 6, 4],
[0, 2, 6],
[0, 3, 2],
[0, 1, 3],
[2, 7, 6],
[2, 3, 7],
[4, 6, 7],
[4, 7, 5],
[0, 4, 5],
[0, 5, 1],
[1, 5, 7],
[1, 7, 3]], dtype='i8')
my_vertices = np.array([[0.0, 0.0, 0.0],
[0.0, 0.0, 1.0],
[0.0, 1.0, 0.0],
[0.0, 1.0, 1.0],
[1.0, 0.0, 0.0],
[1.0, 0.0, 1.0],
[1.0, 1.0, 0.0],
[1.0, 1.0, 1.0]])
colors = my_vertices * 255
my_polydata = vtk.vtkPolyData()
utils.set_polydata_vertices(my_polydata, my_vertices)
utils.set_polydata_triangles(my_polydata, my_triangles)
npt.assert_equal(len(my_vertices), my_polydata.GetNumberOfPoints())
npt.assert_equal(len(my_triangles), my_polydata.GetNumberOfCells())
npt.assert_equal(utils.get_polydata_normals(my_polydata), None)
res_triangles = utils.get_polydata_triangles(my_polydata)
res_vertices = utils.get_polydata_vertices(my_polydata)
npt.assert_array_equal(my_vertices, res_vertices)
npt.assert_array_equal(my_triangles, res_triangles)
utils.set_polydata_colors(my_polydata, colors)
npt.assert_equal(utils.get_polydata_colors(my_polydata), colors)
utils.update_polydata_normals(my_polydata)
normals = utils.get_polydata_normals(my_polydata)
npt.assert_equal(len(normals), len(my_vertices))
mapper = utils.get_polymapper_from_polydata(my_polydata)
actor1 = utils.get_actor_from_polymapper(mapper)
actor2 = utils.get_actor_from_polydata(my_polydata)
scene = window.Scene()
for actor in [actor1, actor2]:
scene.add(actor)
if interactive:
window.show(scene)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr)
npt.assert_equal(report.objects, 1)
def test_peak_slicer(interactive=False):
_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_values = np.random.rand(11, 11, 11, 3)
peak_dirs[:, :, :] = _peak_dirs
scene = window.Scene()
peak_actor = actor.peak_slicer(peak_dirs)
scene.add(peak_actor)
scene.add(actor.axes((11, 11, 11)))
if interactive:
window.show(scene)
scene.clear()
scene.add(peak_actor)
scene.add(actor.axes((11, 11, 11)))
for k in range(11):
peak_actor.display_extent(0, 10, 0, 10, k, k)
for j in range(11):
peak_actor.display_extent(0, 10, j, j, 0, 10)
for i in range(11):
peak_actor.display(i, None, None)
scene.rm_all()
peak_actor = actor.peak_slicer(
peak_dirs,
peak_values,
mask=None,
affine=np.diag([3, 2, 1, 1]),
colors=None,
opacity=0.8,
linewidth=3,
lod=True,
lod_points=10 ** 4,
lod_points_size=3)
scene.add(peak_actor)
scene.add(actor.axes((11, 11, 11)))
if interactive:
window.show(scene)
report = window.analyze_scene(scene)
ex = ['vtkLODActor', 'vtkOpenGLActor']
npt.assert_equal(report.actors_classnames, ex)
# 6d data
data_6d = (255 * np.random.rand(5, 5, 5, 5, 5, 5))
npt.assert_raises(ValueError, actor.peak_slicer, data_6d, data_6d)
def test_geometry_actor(interactive=False):
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]])
actor_list = [[actor.cone, {
'directions': dirs,
'resolution': 8
}], [actor.arrow, {
'directions': dirs,
'resolution': 9
}], [actor.box, {
'directions': dirs,
'size': (1, 3, 2)
}], [actor.cube, {
'directions': dirs
}], [actor.cylinder, {
'directions': dirs
}]]
scene = window.Scene()
for act_func, extra_args in actor_list:
colors = np.array([[1, 0, 0, 0.3], [0, 1, 0, 0.4], [1, 1, 0, 1]])
heights = np.array([5, 7, 10])
geom_actor = act_func(centers=xyz,
heights=heights,
colors=colors[:],
**extra_args)
scene.add(geom_actor)
if interactive:
window.show(scene, order_transparent=True)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr, colors=colors)
npt.assert_equal(report.objects, 3)
colors = np.array([1.0, 1.0, 1.0, 1.0])
heights = 10
scene.clear()
geom_actor = act_func(centers=xyz[:, :3],
heights=10,
colors=colors[:],
**extra_args)
scene.add(geom_actor)
if interactive:
window.show(scene, order_transparent=True)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr, colors=[colors])
npt.assert_equal(report.objects, 3)
scene.clear()
def test_labels(interactive=False):
text_actor = actor.label("Hello")
scene = window.Scene()
scene.add(text_actor)
scene.reset_camera()
scene.reset_clipping_range()
if interactive:
window.show(scene, reset_camera=False)
npt.assert_equal(scene.GetActors().GetNumberOfItems(), 1)
def test_ribbon(interactive=False):
scene = window.Scene()
# Testing if helices and sheets are rendered properly
atom_coords = np.array(
[[31.726, 105.084, 71.456], [31.477, 105.680, 70.156],
[32.599, 106.655, 69.845], [32.634, 107.264, 68.776],
[30.135, 106.407, 70.163], [29.053, 105.662, 70.913],
[28.118, 106.591, 71.657], [28.461, 107.741, 71.938],
[26.928, 106.097, 71.983], [33.507, 106.802, 70.804],
[34.635, 107.689, 70.622], [35.687, 107.018, 69.765],
[36.530, 107.689, 69.174], [35.631, 105.690, 69.688],
[36.594, 104.921, 68.903], [36.061, 104.498, 67.534],
[36.601, 103.580, 66.916], [37.047, 103.645, 69.660],
[35.907, 102.828, 69.957], [37.751, 104.014, 70.958]])
elements = np.array(
[7, 6, 6, 8, 6, 6, 6, 8, 7, 7, 6, 6, 8, 7, 6, 6, 8, 6, 8, 6])
atom_names = np.array([
'N', 'CA', 'C', 'O', 'CB', 'CG', 'CD', 'OE1', 'NE2', 'N', 'CA', 'C',
'O', 'N', 'CA', 'C', 'O', 'CB', 'OG1', 'OG2'
])
model = np.ones(20)
chain = np.ones(20) * 65
residue_seq = np.ones(20)
residue_seq[9:13] = 2
residue_seq[13:] = 3
residue_seq[6] = 4
is_hetatm = np.zeros(20, dtype=bool)
secondary_structure = np.array([[65, 1, 65, 3]])
colors = np.array([[240 / 255, 0, 128 / 255], [1, 1, 0]])
for i, color in enumerate(colors):
if i:
helix = []
sheet = secondary_structure
else:
helix = secondary_structure
sheet = []
molecule = mol.Molecule(elements, atom_coords, atom_names, model,
residue_seq, chain, sheet, helix, is_hetatm)
test_actor = mol.ribbon(molecule)
scene.set_camera((28, 113, 74), (34, 106, 70), (-0.37, 0.29, -0.88))
scene.add(test_actor)
scene.reset_camera()
scene.reset_clipping_range()
if interactive:
window.show(scene)
npt.assert_equal(scene.GetActors().GetNumberOfItems(), 1)
arr = window.snapshot(scene)
report = window.analyze_snapshot(arr, colors=[color])
npt.assert_equal(report.objects, 1)
scene.clear()
def test_vertices_from_actor(interactive=False):
expected = np.array([[1.5, -0.5, 0.],
[1.5, 0.5, 0],
[2.5, 0.5, 0],
[2.5, -0.5, 0],
[-1, 1, 0],
[-1, 3, 0],
[1, 3, 0],
[1, 1, 0],
[-0.5, -0.5, 0],
[-0.5, 0.5, 0],
[0.5, 0.5, 0],
[0.5, -0.5, 0]])
centers = np.array([[2, 0, 0], [0, 2, 0], [0, 0, 0]])
colors = np.array([[255, 0, 0], [0, 255, 0], [0, 0, 255]])
scales = [1, 2, 1]
verts, faces = fp.prim_square()
res = fp.repeat_primitive(verts, faces, centers=centers, colors=colors,
scales=scales)
big_verts = res[0]
big_faces = res[1]
big_colors = res[2]
actr = get_actor_from_primitive(big_verts, big_faces, big_colors)
actr.GetProperty().BackfaceCullingOff()
if interactive:
scene = window.Scene()
scene.add(actor.axes())
scene.add(actr)
window.show(scene)
res_vertices = vertices_from_actor(actr)
res_vertices_vtk = vertices_from_actor(actr, as_vtk=True)
npt.assert_array_almost_equal(expected, res_vertices)
npt.assert_equal(isinstance(res_vertices_vtk, vtk.vtkDoubleArray), True)
# test colors_from_actor:
l_colors = utils.colors_from_actor(actr)
l_colors_vtk = utils.colors_from_actor(actr, as_vtk=True)
l_colors_none = utils.colors_from_actor(actr, array_name='col')
npt.assert_equal(l_colors_none, None)
npt.assert_equal(isinstance(l_colors_vtk, vtk.vtkUnsignedCharArray), True)
npt.assert_equal(np.unique(l_colors, axis=0).shape, colors.shape)
l_array = utils.array_from_actor(actr, 'colors')
l_array_vtk = utils.array_from_actor(actr, 'colors', as_vtk=True)
l_array_none = utils.array_from_actor(actr, 'col')
npt.assert_array_equal(l_array, l_colors)
npt.assert_equal(l_array_none, None)
npt.assert_equal(isinstance(l_array_vtk, vtk.vtkUnsignedCharArray), True)
def test_peak_slicer(interactive=False):
_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_values = np.random.rand(11, 11, 11, 3)
peak_dirs[:, :, :] = _peak_dirs
renderer = window.Renderer()
peak_actor = actor.peak_slicer(peak_dirs)
renderer.add(peak_actor)
renderer.add(actor.axes((11, 11, 11)))
if interactive:
window.show(renderer)
renderer.clear()
renderer.add(peak_actor)
renderer.add(actor.axes((11, 11, 11)))
for k in range(11):
peak_actor.display_extent(0, 10, 0, 10, k, k)
for j in range(11):
peak_actor.display_extent(0, 10, j, j, 0, 10)
for i in range(11):
peak_actor.display(i, None, None)
renderer.rm_all()
peak_actor = actor.peak_slicer(
peak_dirs,
peak_values,
mask=None,
affine=np.diag([3, 2, 1, 1]),
colors=None,
opacity=1,
linewidth=3,
lod=True,
lod_points=10 ** 4,
lod_points_size=3)
renderer.add(peak_actor)
renderer.add(actor.axes((11, 11, 11)))
if interactive:
window.show(renderer)
report = window.analyze_renderer(renderer)
ex = ['vtkLODActor', 'vtkOpenGLActor', 'vtkOpenGLActor', 'vtkOpenGLActor']
npt.assert_equal(report.actors_classnames, ex)
def test_labels(interactive=False):
npt.assert_warns(DeprecationWarning, actor.label, "FURY Rocks")
text_actor = actor.vector_text("FURY Rocks")
scene = window.Scene()
scene.add(text_actor)
scene.reset_camera()
scene.reset_clipping_range()
if interactive:
window.show(scene, reset_camera=False)
npt.assert_equal(scene.GetActors().GetNumberOfItems(), 1)
def test_labels(interactive=False):
text_actor = actor.label("Hello")
renderer = window.Renderer()
renderer.add(text_actor)
renderer.reset_camera()
renderer.reset_clipping_range()
if interactive:
window.show(renderer, reset_camera=False)
npt.assert_equal(renderer.GetActors().GetNumberOfItems(), 1)
def my_visu(sf, sphere, rot=True, norm=True, scale=True, title="Modeling"):
ren = window.renderer(background=window.colors.white)
sf_actor = actor.odf_slicer(sf,
sphere=sphere,
colormap='jet',
scale=0.4,
norm=norm,
radial_scale=scale)
if rot:
sf_actor.RotateX(90)
ren.add(sf_actor)
window.show(ren, title=title, size=WINDOW_SIZE)
ren.rm(sf_actor)
window.rm_all(ren)
def test_spheres(interactive=False):
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]])
renderer = window.Renderer()
sphere_actor = actor.sphere(centers=xyzr[:, :3], colors=colors[:],
radii=xyzr[:, 3])
renderer.add(sphere_actor)
if interactive:
window.show(renderer, order_transparent=True)
arr = window.snapshot(renderer)
report = window.analyze_snapshot(arr,
colors=colors)
npt.assert_equal(report.objects, 3)
def test_contour_from_roi(interactive=False):
# Render volume
scene = window.Scene()
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]),
opacity=.5)
scene.add(surface)
scene.reset_camera()
scene.reset_clipping_range()
if interactive:
window.show(scene)
# Test Errors
npt.assert_raises(ValueError, actor.contour_from_roi, np.ones(50))
# Test binarization
scene2 = window.Scene()
data2 = np.zeros((50, 50, 50))
data2[20:30, 25, 25] = 1.
data2[35:40, 25, 25] = 1.
affine = np.eye(4)
surface2 = actor.contour_from_roi(data2, affine,
color=np.array([0, 1, 1]),
opacity=.5)
scene2.add(surface2)
scene2.reset_camera()
scene2.reset_clipping_range()
if interactive:
window.show(scene2)
arr = window.snapshot(scene, 'test_surface.png', offscreen=True)
arr2 = window.snapshot(scene2, 'test_surface2.png', offscreen=True)
report = window.analyze_snapshot(arr, find_objects=True)
report2 = window.analyze_snapshot(arr2, find_objects=True)
npt.assert_equal(report.objects, 1)
npt.assert_equal(report2.objects, 2)