def test_show_entity():
"""Test showing an entity"""
# Create a figure
app = Application()
fig = scene.CanvasWithScene(app=app)
app.create()
fig.size = 1, 1
fig.show()
camcontainer = scene.PixelCamera(fig.viewbox)
camera = scene.ThreeDCamera(camcontainer)
camera._fov = 90
fig.viewbox.camera = camera
pointscontainer = scene.Entity(fig.viewbox)
scene.PointsEntity(pointscontainer, 1000)
app.process_events()
app.process_events() # for good measure
# Now do first-person
camcontainer = scene.PixelCamera(fig.viewbox)
camera = scene.FirstPersonCamera(camcontainer)
camera.update_angles()
fig.viewbox.camera = camera
pointscontainer = scene.Entity(fig.viewbox)
scene.PointsEntity(pointscontainer, 1000)
app.process_events()
app.process_events() # for good measure
# Now do 2D
camcontainer = scene.PixelCamera(fig.viewbox)
camera = scene.TwoDCamera(camcontainer)
camera.xlim = -100, 500
camera.ylim = -100, 500
fig.viewbox.camera = camera
pointscontainer = scene.Entity(fig.viewbox)
scene.PointsEntity(pointscontainer, 1000)
transforms.translate(camcontainer.transform, 50, 50)
transforms.rotate(camcontainer.transform, 10, 0, 0, 1)
app.process_events()
app.process_events() # for good measure
fig.close()
app.quit()
async def viewer(receive_channel, shape):
display_shape = (512, 512)
# init app
app = Application()
app.create()
# init viewer
canvas = scene.SceneCanvas(app=app, keys="interactive")
canvas.size = display_shape
# create view and image
view = canvas.central_widget.add_view()
# lock view
view.camera = scene.PanZoomCamera(aspect=1, interactive=False)
view.camera.flip = (0, 1, 0)
image = scene.visuals.Image(np.empty(display_shape, np.uint8),
parent=view.scene,
cmap="grays")
view.camera.set_range(margin=0)
canvas.show()
async with receive_channel:
async for frame in receive_channel:
# logger.debug(f".... average {frame.mean():.2f}")
# resize
frame = transform.resize(frame, display_shape)
# rescale intensity to 8-bit
frame = exposure.rescale_intensity(frame, out_range=np.uint8)
# change dtype
frame = frame.astype(np.uint8)
image.set_data(frame)
canvas.update()
app.process_events()