How to use the pythreejs.LineSegments2 function in pythreejs

def toggle_black_edges(self, change):
        value = self.bool_or_new(change)
        for obj in self.pickable_objects.children:
            if isinstance(obj, LineSegments2):
                _, ind = obj.name.split("_")
                ind = int(ind)
                if isinstance(self.shapes[ind]["shape"][0], TopoDS_Compound):
                    obj.material.color = "#000" if value else self.default_edge_color

def _get_line_from_vec(v0, v1, scene_args):
    """Draw the line given the two endpoints, some threejs functionalities still don't work well in pythreejs (unable to update linewidth and such) 
    LineSegments2 is the onlyone that has tested sucessfully but it cannot handle LineDashedMaterial
    
    Args:
        v0 (list): one endpoint of line
        v1 (list): other endpoint of line
        scene_args (dict): properties of the line (line_width and color)
    
    Returns:
        LineSegments2: Pythreejs object that displays the line sement
    """
    obj_args = update_object_args(scene_args, "Lines", ['linewidth', 'color'])
    logger.debug(obj_args)
    line = LineSegments2(
        LineSegmentsGeometry(positions=[[v0, v1]]),
        LineMaterial(**obj_args),  # Dashed lines do not work in pythreejs yet
    )
    return line

attributes = {"position": BufferAttribute(vertices_list, normalized=False)}

            mat = PointsMaterial(color=vertex_color, sizeAttenuation=False, size=vertex_width)
            geom = BufferGeometry(attributes=attributes)
            points = Points(geometry=geom, material=mat)

        if edges is not None:
            start_discretize_time = self._start_timer()
            edge_list = [discretize_edge(edge, self.edge_accuracy) for edge in edges]
            self._stop_timer("discretize time",start_discretize_time)

        if edge_list is not None:
            edge_list = _flatten(list(map(_explode, edge_list)))
            lines = LineSegmentsGeometry(positions=edge_list)
            mat = LineMaterial(linewidth=edge_width, color=edge_color)
            edge_lines = LineSegments2(lines, mat, name="edges_%d" % shape_index)

        if shape_mesh is not None or edge_lines is not None or points is not None:
            index_mapping = {"mesh": None, "edges": None, "shape": shape_index}
            if shape_mesh is not None:
                ind = len(self.pickable_objects.children)
                self.pickable_objects.add(shape_mesh)
                index_mapping["mesh"] = ind
            if edge_lines is not None:
                ind = len(self.pickable_objects.children)
                self.pickable_objects.add(edge_lines)
                index_mapping["edges"] = ind
            if points is not None:
                ind = len(self.pickable_objects.children)
                self.pickable_objects.add(points)
                index_mapping["mesh"] = ind
            self.pick_mapping.append(index_mapping)

def __init__(self, bb_center, length=1, width=3):
        super().__init__(bb_center)

        self.axes = []
        for vector, color in zip(([length, 0, 0], [0, length, 0], [0, 0, length]), ('red', 'green', 'blue')):
            self.axes.append(
                LineSegments2(
                    LineSegmentsGeometry(positions=[[self.center, self._shift(self.center, vector)]]),
                    LineMaterial(linewidth=width, color=color)))

def __init__(self, bb_center, length=1, width=3):
        super().__init__(bb_center)

        self.axes = []
        for vector, color in zip(([length, 0, 0], [0, length, 0], [0, 0, length]), ('red', 'green', 'blue')):
            self.axes.append(
                LineSegments2(
                    LineSegmentsGeometry(positions=[[self.center, self._shift(self.center, vector)]]),
                    LineMaterial(linewidth=width, color=color)))