fury streamline actor partially occluded by volume slice

fury_streamline_vis.py

import os
import nibabel as nib
from dipy.data import fetch_bundles_2_subjects, read_bundles_2_subjects
from fury import window, actor

fetch_bundles_2_subjects()

fname_t1 = os.path.join(
    os.path.expanduser('~'), '.dipy', 'exp_bundles_and_maps',
    'bundles_2_subjects', 'subj_1', 't1_warped.nii.gz')

dix = read_bundles_2_subjects(
    subj_id='subj_1', bundles=['cg.left', 'cst.right'])


img = nib.load(fname_t1)
data = img.get_fdata()
affine = img.affine

scene = window.Scene()

mean, std = data[data > 0].mean(), data[data > 0].std()
value_range = (mean - 0.5 * std, mean + 1.5 * std)

slice_actor = actor.slicer(data, affine, value_range)
slice_of_interest = 116
slice_actor.display(slice_of_interest, None, None)

scene.add(slice_actor)

bundle = dix['cg.left']
stream_actor = actor.line(bundle)
scene.add(stream_actor)

scene.yaw(-90)
scene.roll(90)

window.show(scene, size=(900, 900))

scene.rm(slice_actor)

slice_actor = actor.slicer(data, affine, value_range, opacity=0.6)
slice_actor.display(slice_of_interest, None, None)

scene.add(slice_actor)
window.show(scene, size=(900, 900))

Streamline parts hidden by volume slice:

Opacity applied to volume slice: