def test_qfigure(self):
fig = vpl.QtFigure("a qt widget figure")
self.assertIs(fig, vpl.gcf())
direction = np.array([1, 0, 0])
vpl.quiver(np.array([0, 0, 0]), direction)
vpl.view(camera_direction=direction)
vpl.reset_camera()
vpl.show()
def test_view():
vpl.auto_figure(True)
vpl.close()
grads = np.array(vpl.geometry.orthogonal_bases(np.random.rand(3)))
point = np.random.uniform(-10, 10, 3)
vpl.quiver(np.broadcast_to(point, (3, 3)), grads, color=np.eye(3))
vpl.view(focal_point=point, camera_position=point - grads[0],
up_view=grads[1])
vpl.reset_camera()
vpl.text("Should be looking in the direction of the red arrow, "
"with the green arrow pointing up")
# Linux seems to need an extra prod to render this for some reason.
vpl.show(block=False)
def test_multi_figures(self):
vpl.close()
vpl.auto_figure(False)
plot = vpl.plot(np.random.uniform(-10, 10, (10, 3)), join_ends=True)
figs = []
for i in range(1, 4):
fig = vpl.figure("figure {}".format(i))
fig += plot
vpl.view(camera_direction=np.random.uniform(-1, 1, 3), fig=fig)
vpl.reset_camera(fig)
fig.show(False)
figs.append(fig)
fig.show()
vpl.auto_figure(True)
def button_pressed_cb(self):
"""Plot commands can be called in callbacks. The current working
figure is still self.figure and will remain so until a new
figure is created explicitly. So the ``fig=self.figure``
arguments below aren't necessary but are recommended for
larger, more complex scenarios.
"""
# Randomly place a ball.
vpl.scatter(np.random.uniform(-30, 30, 3),
color=np.random.rand(3),
fig=self.figure)
# Reposition the camera to better fit to the balls.
vpl.reset_camera(self.figure)
# Without this the figure will not redraw unless you click on it.
self.figure.update()
def test_qfigure():
vpl.QtFigure._abc_assert_no_abstract_methods()
self = vpl.QtFigure("a Qt widget figure")
assert self is vpl.gcf()
direction = np.array([1, 0, 0])
vpl.quiver(np.array([0, 0, 0]), direction)
vpl.view(camera_direction=direction)
vpl.reset_camera()
self.show(block=False)
self.close()
self.showMaximized(block=not VTKPLOTLIB_WINDOWLESS_TEST)
out = vpl.screenshot_fig(fig=self)
vpl.close(fig=self)
globals().update(locals())
return out
def test_view(self):
vpl.auto_figure(True)
vpl.close()
grads = np.array(vpl.geometry.orthogonal_bases(np.random.rand(3)))
point = np.random.uniform(-10, 10, 3)
vpl.quiver(np.broadcast_to(point, (3, 3)), grads, color=np.eye(3))
vpl.view(focal_point=point,
camera_position=point - grads[0],
up_view=grads[1])
# vpl.view(camera_direction=grads[0],
# up_view=grads[1],
# )
#
vpl.reset_camera()
# vpl.view(point)
vpl.text(
"Should be looking in the direction of the red arrow, with the green arrow pointing up"
)
vpl.show()
def get_projections(file, camera_directions=CAMERA_DIRS):
""" Get projection views in given camera directions from an STL file.
Returns: Numpy array of shape (PROJ_SHAPE, len(camera_directions)).
"""
views = []
for dir in camera_directions[::-1]:
mesh = Mesh.from_file(file)
vpl.mesh_plot(mesh, color="black")
r = vpl.view(camera_position=(0, 0, 0), camera_direction=dir)
vpl.reset_camera()
vpl.zoom_to_contents(padding=1)
# Upscale first so downscale is more accurate
arr = vpl.screenshot_fig(magnification=10, off_screen=True)
# Change 3-channel RGB image to single channel binary matrix
arr = cv2.cvtColor(arr, cv2.COLOR_BGR2GRAY)
arr[arr == 0] = 1
arr[arr == 218] = 0
arr = cv2.resize(arr, dsize=PROJ_SHAPE, interpolation=cv2.INTER_LINEAR)
vpl.close()
views.append(arr)
views = np.array(views).reshape(
(PROJ_SHAPE[0], PROJ_SHAPE[1], len(camera_directions)))
return views
@property
def window_name(self):
if hasattr(self, "_renWin"):
return self.renWin.GetWindowName()
return self._window_name
@window_name.setter
def window_name(self, window_name):
if hasattr(self, "_renWin"):
self.renWin.SetWindowName(window_name)
self._window_name = window_name
if __name__ == "__main__":
Figure._abc_assert_no_abstract_methods()
import vtkplotlib as vpl
self = vpl.figure("a normal vtk figure")
# vpl.plot(np.random.uniform(-10, 10, (20, 3)))
direction = np.array([1, 0, 0])
vpl.quiver(np.array([0, 0, 0]), direction)
vpl.view(camera_direction=direction)
vpl.reset_camera()
# vpl.save_fig(Path.home() / "img.jpg", 1080)
self.show()