panda3d有8个点表示长方体的8个顶点所组成的列表box_points = Point3-1 -1 -1 Point3-1 -1 1 Point3-1 1 -1 Point3-1 1 1 Point31 -1 -1 Point31 -1 1 Point31 1 -1 Point31 1 1panda3d画出这个长方体

可以使用以下代码来画出这个长方体：

from direct.showbase.ShowBase import ShowBase from panda3d.core import Point3 from panda3d.core import LineSegs

class MyApp(ShowBase): def init(self): ShowBase.init(self) self.box_points = [ Point3(-1, -1, -1), Point3(-1, -1, 1), Point3(-1, 1, -1), Point3(-1, 1, 1), Point3(1, -1, -1), Point3(1, -1, 1), Point3(1, 1, -1), Point3(1, 1, 1) ] self.draw_box()

def draw_box(self):
    lines = LineSegs()
    lines.set_color(1, 1, 1, 1)
    # draw bottom face
    lines.move_to(self.box_points[0])
    lines.draw_to(self.box_points[1])
    lines.draw_to(self.box_points[3])
    lines.draw_to(self.box_points[2])
    lines.draw_to(self.box_points[0])
    # draw top face
    lines.move_to(self.box_points[4])
    lines.draw_to(self.box_points[5])
    lines.draw_to(self.box_points[7])
    lines.draw_to(self.box_points[6])
    lines.draw_to(self.box_points[4])
    # draw vertical edges
    lines.move_to(self.box_points[0])
    lines.draw_to(self.box_points[4])
    lines.move_to(self.box_points[1])
    lines.draw_to(self.box_points[5])
    lines.move_to(self.box_points[2])
    lines.draw_to(self.box_points[6])
    lines.move_to(self.box_points[3])
    lines.draw_to(self.box_points[7])
    # render lines
    node = lines.create()
    self.render.attach_new_node(node)

app = MyApp() app.run(