目录
63.题目:画椭圆
1.tkinter画椭圆
2.turtle画椭圆
64.题目:利用ellipse 和 rectangle 画图
#63 from tkinter import * x = 360 y = 160 top = y - 30 bottom = y - 30 canvas = Canvas(width = 500,height = 600,bg = 'white') for i in range(20): canvas.create_oval(250 - top,250 - bottom,250 + top,250 + bottom) top -= 5 bottom += 5 canvas.pack() mainloop()
输出:
import turtle pen=turtle.Turtle() #定义画笔实例 a=1 for i in range(120): if 0<=i<30 or 60<=i<90: #控制a的变化 a=a+0.2 pen.lt(3) #向左转3度 pen.fd(a) #向前走a的步长 else: a=a-0.2 pen.lt(3) pen.fd(a) print(pen) turtle.mainloop()
输出:
from tkinter import * canvas = Canvas(width = 400,height = 600,bg = 'white') left = 20 right = 50 top = 50 num = 15 for i in range(num): canvas.create_oval(250 - right,250 - left,250 + right,250 + left) canvas.create_oval(250 - 20,250 - top,250 + 20,250 + top) canvas.create_rectangle(20 - 2 * i,20 - 2 * i,10 * (i + 2),10 * ( i + 2)) right += 5 left += 5 top += 10 canvas.pack() mainloop()
输出: