pyVTK Wrapper

This is a wrapper for python-vtk. You can utilize these methods to render other point data as well.

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class vtk_vis.vtk_render

Bases: object

Base class for the vtk wrapper.

Keypress(obj, event)

draw_arrow(p1, p2, shaft_r=0.01, tip_r=0.05, tip_l=0.2, balls=0, ball_color=[1, 1, 1], ball_r=1, color=[1, 1, 1])

draw_cube(center, size, color=[1, 1, 1])

Draw a cube in the scene.

Parameters

• center (list or np.ndarray) – Center of the box in 3D space.

• size (float) – How large the box should be on a side.

• color (list, optional) – Color of the outline in RGB.

draw_sphere(pos, r, color=[1, 1, 1], opacity=1, res=12)

Draw a sphere in the scene.

Parameters

• center (list or np.ndarray) – Center of the sphere in 3D space.

• r (float) – Radius of the sphere.

• color (list, optional) – Color of the sphere in RGB.

• opacity (float, optional) – Transparency of the sphere.

• res (int, optional) – Resolution of the sphere.

makebutton()

place_label(pos, text, text_color=[1, 1, 1], text_font_size=12, label_box_color=[0, 0, 0], label_box=1, label_box_opacity=0.8)

Place a label in the scene.

Parameters

• pos (tuple or np.ndarray) – Position in 3D space where to place the label.

• text (str) – Label text.

• text_color (list or np.ndarray, optional) – Color of the label text in RGB.

• text_font_size (int, optional) – Text size of the label.

• label_box_color (list or np.ndarray, optional) – Background color of the label box in RGB.

• label_box (int, optional) – 0=do not show the label box, 1=show the label box.

• label_box_opacity (float, optional) – Opacity value of the background box (1=no transparency).

point_render(pos, color=[1, 1, 1], opacity=1, alpha=1, psize=1)

Render a pointcloud in the scene.

Parameters

• pos (np.ndarray) – 3D positions of points.

• color (list or np.ndarray, optional) – Color of points. This can be a single RGB value or a list of RGB values (one per point).

• opacity (float, optional) – Transparency of the points.

• alpha (float, optional) – Transparency of the points (same as opacity).

• psize (int, optional) – Size of the points.

quit()

render(xsize=800, ysize=800, bg_color=[0.5, 0.5, 0.5], focal_point=None, orient_widget=1)

Final call to render the window.

Parameters

• xsize (int, optional) – Horizontal size of the window in pixels.

• ysize (int, optional) – Vertical size of the window in pixels.

• bg_color (tuple or np.array, optional) – Background color in RGB.

• focal_point (tuple or np.array, optional) – Where to focus the camera on rendering.

• orient_widget (int, optional) – Show the orient widget?