python实现open3d绘制点和线组成的三维矩形框，并通过键盘控制矩形框移动

可以使用以下代码实现：

import open3d as o3d
import numpy as np

# 创建点云
points = [[, , ], [1, , ], [1, 1, ], [, 1, ], [, , 1], [1, , 1], [1, 1, 1], [, 1, 1]]
lines = [[, 1], [1, 2], [2, 3], [3, ], [4, 5], [5, 6], [6, 7], [7, 4], [, 4], [1, 5], [2, 6], [3, 7]]
colors = [[1, , ] for i in range(len(lines))]
line_set = o3d.geometry.LineSet(points=o3d.utility.Vector3dVector(points), lines=o3d.utility.Vector2iVector(lines))
line_set.colors = o3d.utility.Vector3dVector(colors)

# 显示点云
o3d.visualization.draw_geometries([line_set])

# 通过键盘控制矩形框移动
def move_callback(vis):
    # 获取当前矩形框的位置
    current_pos = line_set.points
    # 获取键盘事件
    key = vis.get_key()
    if key == ord('w'):
        # 向前移动
        current_pos[:, 2] += .1
    elif key == ord('s'):
        # 向后移动
        current_pos[:, 2] -= .1
    elif key == ord('a'):
        # 向左移动
        current_pos[:, ] -= .1
    elif key == ord('d'):
        # 向右移动
        current_pos[:, ] += .1
    # 更新矩形框的位置
    line_set.points = o3d.utility.Vector3dVector(current_pos)
    # 重新绘制点云
    vis.update_geometry()
    vis.poll_events()
    vis.update_renderer()

# 注册键盘事件回调函数
o3d.visualization.draw_geometries_with_key_callbacks([line_set], {"w": move_callback, "s": move_callback, "a": move_callback, "d": move_callback})