vpython 3d demo
"""
vpython测试程序,vpython是用Python进行3D建模的模块。
以下程序会生成3D球,3D立方体盒子,
程序显示的结果是在浏览器当中,按鼠标右键可调摄像头,滚动可调远近视距。
用命令pip install vpython即可安装vpython,
"""
from vpython import *
b = box(pos=vec(-4,2,0), color=color.red) # 新建3D立方体
c1 = cylinder(pos=b.pos, radius=0.1, axis=vec(0,1.5,0), color=color.yellow)
s = sphere(pos=vec(4,-4,0), radius=0.5, color=color.green) # 新建球体
c2 = cylinder(pos=s.pos, radius=0.1, axis=vec(0,1.5,0), color=color.yellow)
t1 = text(text='www.scratch8.net', pos=c1.pos+c1.axis, align='center', height=0.5,
color=color.yellow, billboard=True, emissive=True)
t2 = text(text='sphere', pos=c2.pos+c2.axis, align='center', height=0.5,
color=color.yellow, billboard=True, emissive=True)
t3 = text(text='Faces forward', pos=vec(-4,0,0),
color=color.cyan, billboard=True, emissive=True)
box(pos=t3.start, size=0.1*vec(1,1,1), color=color.red)
t4 = text(text='Regular text', pos=vec(-4,-1,0), depth=0.5, color=color.yellow,
start_face_color=color.red, end_face_color=color.green)
box(pos=t4.start, size=0.1*vec(1,1,1), color=color.red)
