def test_ui_disk_2d():
window_size = (700, 700)
show_manager = window.ShowManager(size=window_size)
disk = ui.Disk2D(outer_radius=20, inner_radius=5)
disk.position = (50, 80)
npt.assert_equal(disk.position, (50, 80))
disk.color = (1, 0.5, 0)
npt.assert_equal(disk.color, (1, 0.5, 0))
disk.opacity = 0.5
npt.assert_equal(disk.opacity, 0.5)
# Check the rectangle is drawn at right place.
show_manager.ren.add(disk)
# Uncomment this to start the visualisation
# show_manager.start()
colors = [disk.color]
arr = window.snapshot(show_manager.ren, size=window_size, offscreen=True)
report = window.analyze_snapshot(arr, colors=colors)
assert report.objects == 1
assert report.colors_found
# Test visibility off.
disk.set_visibility(False)
arr = window.snapshot(show_manager.ren, size=window_size, offscreen=True)
report = window.analyze_snapshot(arr)
assert report.objects == 0
from dipy.viz import read_viz_icons, fetch_viz_icons
from dipy.viz import ui, window
"""
Shapes
======
Let's start by drawing some simple shapes. First, a rectangle.
"""
rect = ui.Rectangle2D(size=(200, 200), position=(400, 300), color=(1, 0, 1))
"""
Then we can draw a solid circle, or disk.
"""
disk = ui.Disk2D(outer_radius=50, center=(500, 500), color=(1, 1, 0))
"""
Add an inner radius to make a ring.
"""
ring = ui.Disk2D(outer_radius=50,
inner_radius=45,
center=(500, 300),
color=(0, 1, 1))
"""
Image
=====
Now let's display an image. First we need to fetch some icons that are included
in DIPY.
"""