Function add_traj_point

app.py:424–445

(
                    visual_canvas,
                    traj_lists,
                    traj_instance_idx, 
                    evt: gr.SelectData,
                )

def add_traj_point(
                    visual_canvas,
                    traj_lists,
                    traj_instance_idx, 
                    evt: gr.SelectData,
                ):  # Add new Traj and then visualize

    # Convert
    traj_lists = ast.literal_eval(traj_lists)

    # Mark New Trajectory Key Point
    hotizontal, vertical = evt.index

    # traj_lists data structure is: (Num of Instnace, Num of Trajecotries, Num of Points, [X, Y])
    traj_lists[-1][-1].append( [int(hotizontal), int(vertical)] )

    # Draw new trajectory on the Canvas image
    visual_canvas = fn_vis_realtime_traj(visual_canvas, traj_lists[-1][-1], traj_instance_idx)


    # Return New Traj Marked Canvas image
    return visual_canvas, traj_lists