Retrieve Picked Points - WebRTC

[ddkats]

Checklist

• I have searched for similar issues.
• For Python issues, I have tested with the latest development wheel.
• I have checked the release documentation and the latest documentation (for main branch).

My Question

Is there a way to implement the functionality of picking points on a point cloud and retrieving the array of selected points using WebRTC? Or is there another workaround?

def pick_points(pcd):
    """Allows the user to pick points interactively in the Open3D viewer."""
    
    o3d.visualization.webrtc_server.enable_webrtc()
    
    print("Please pick points to define a region. Press 'Q' to finish.")
    
    vis = o3d.visualization.VisualizerWithEditing()
    vis.create_window()
    vis.add_geometry(pcd)
    vis.run()
    picked_indices = vis.get_picked_points()
    vis.destroy_window()
    
    return np.asarray(pcd.points)[picked_indices]