from panda3dcore import LineSegsfrom directshowbaseShowBase import ShowBaseclass MyAppShowBase def __init__self ShowBase__init__self # 定义长方体的最小值和最大值 min_point = -1 -1 -1

你可以将上述代码封装成一个函数，如下所示：

from panda3d.core import LineSegs
from direct.showbase.ShowBase import ShowBase

def draw_cube(min_point, max_point):
    # 创建ShowBase实例
    app = ShowBase()

    # 创建线段对象
    lines = LineSegs()
    lines.setThickness(2)  # 设置线段宽度

    # 绘制长方体的边框
    lines.moveTo(min_point[0], min_point[1], min_point[2])
    lines.drawTo(max_point[0], min_point[1], min_point[2])
    lines.moveTo(min_point[0], min_point[1], min_point[2])
    lines.drawTo(min_point[0], max_point[1], min_point[2])
    lines.moveTo(min_point[0], min_point[1], min_point[2])
    lines.drawTo(min_point[0], min_point[1], max_point[2])
    lines.moveTo(max_point[0], max_point[1], max_point[2])
    lines.drawTo(min_point[0], max_point[1], max_point[2])
    lines.moveTo(max_point[0], max_point[1], max_point[2])
    lines.drawTo(max_point[0], min_point[1], max_point[2])
    lines.moveTo(max_point[0], max_point[1], max_point[2])
    lines.drawTo(max_point[0], max_point[1], min_point[2])
    lines.moveTo(max_point[0], min_point[1], min_point[2])
    lines.drawTo(max_point[0], min_point[1], max_point[2])
    lines.moveTo(min_point[0], max_point[1], min_point[2])
    lines.drawTo(max_point[0], max_point[1], min_point[2])
    lines.moveTo(min_point[0], max_point[1], min_point[2])
    lines.drawTo(min_point[0], max_point[1], max_point[2])
    lines.moveTo(min_point[0], min_point[1], max_point[2])
    lines.drawTo(max_point[0], min_point[1], max_point[2])
    lines.moveTo(min_point[0], min_point[1], max_point[2])
    lines.drawTo(min_point[0], min_point[1], min_point[2])

    # 创建线段节点
    node = lines.create()
    node_path = app.render.attachNewNode(node)

    # 设置线段颜色
    node_path.setColor(1, 0, 0, 1)
    node_path.reparentTo(app.render) 

    # 运行应用程序
    app.run()

你可以调用draw_cube(min_point, max_point)函数并传入定义长方体的最小值和最大值来绘制长方体的边框。