7923 - [C]实例063：画椭圆

admin

题目：画椭圆。
$ V% g& P; C  n0 d程序分析：使用 tkinter。
3 B& o; E+ J- P: c+ _

1. if __name__ == '__main__':
   . I6 C% o$ J0 A
2.     from tkinter import *
   
3.     x = 360
   
4.     y = 160
   : j2 s3 j4 f( g" g
5.     top = y - 30
   ! w% A. @" ]# \+ m1 ~/ O& f
6.     bottom = y - 30
   & z# _" Y; s  U. |5 o' Q
7.    
   
8.     canvas = Canvas(width = 400,height = 600,bg = 'white')
   
9.     for i in range(20):
   3 S" q6 I* ~5 K0 B! }; r8 c
10.         canvas.create_oval(250 - top,250 - bottom,250 + top,250 + bottom)
    
11.         top -= 5
    , G7 q; e5 s% [, j" k
12.         bottom += 5
    " C: u9 M# i- q1 ^, c+ ~7 N2 l
13.     canvas.pack()
    
14.     mainloop()

复制代码