实验6 turtle绘图与python库应用编程初体验

 1 from turtle import *
 2 
 3 def moveto(x,y):
 4     '''
 5     画笔移动到坐标（x,y）处
 6     '''
 7     penup()
 8     goto(x,y)
 9     pendown()
10 
11 def draw(n,size = 100):
12     '''
13     绘制边长为size的正n边形
14     '''
15     for i in range(n):
16         fd(size)
17         left(360/n)
18 
19 def main():
20     pensize(2)
21     pencolor('red')
22 
23     moveto(-200,0)
24     draw(3)
25 
26     moveto(0,0)
27     draw(4)
28 
29     moveto(200,0)
30     draw(5)
31 
32     hideturtle()
33     done()
34 
35 main()

 1 # 运用circle函数，实现正多边形绘制
 2 from turtle import *
 3 
 4 def moveto(x,y):
 5     '''
 6     画笔移动到坐标（x,y）处
 7     '''
 8     penup()
 9     goto(x,y)
10     pendown()
11 
12 def main():
13     pensize(2)
14     pencolor('blue')
15 
16     moveto(-150,0)
17     circle(50)
18 
19     moveto(0,0)
20     circle(50,steps = 4)
21 
22     moveto(150,0)
23     circle(50,steps = 5)
24 
25     moveto(300,0)
26     circle(50,steps = 6)
27 
28     hideturtle()
29     done()
30 
31 main()

 1 # 用turtle绘制9个同心圆
 2 from turtle import *
 3 
 4 def moveto(x,y):
 5     penup()
 6     goto(x,y)
 7     pendown()
 8 
 9 def main():
10     setup(800,600)
11 
12     radius = 20 # 圆初始半径
13     offset = 20 # 同心圆每次位移量
14 
15     for i in range(9):
16         moveto(0,-radius)
17         circle(radius)
18         radius += offset
19 
20     hideturtle()
21     done()
22 
23 main()

 1 # 以(0, 0)为圆心，绘制9个彩色同心圆，色彩随机生成
 2 from turtle import *
 3 from random import random
 4 
 5 def moveto(x, y):
 6     penup()
 7     goto(x, y)
 8     pendown()
 9     
10 def gen_color():
11     '''
12     生成一个以rgb三元组表示的颜色值并返回
13     '''
14     return tuple((random() for i in range(3)))
15 
16 def main():
17     setup(800, 600)
18     radius = 180 # 圆初始半径
19     offset = 20 # 同心圆每次位移量
20     for i in range(8):
21         moveto(0, -radius)
22         color(gen_color())
23         begin_fill()
24         circle(radius)
25         end_fill()
26 
27         radius -= offset
28 
29     hideturtle()
30     done()
31 
32 main()

 1 # 用矩形绘制花瓣
 2 from turtle import *
 3 
 4 def square(size = 50, rgb = 'pink'):
 5     '''
 6     绘制正方形
 7     :para: size:int 指定边长 (如未指定参数，使用默认值）
 8     :para: c: str 指定画笔颜色值 (如未指定参数，使用默认值）
 9     '''
10     pencolor(rgb)
11     for i in range(4):
12         fd(size)
13         left(90)
14 
15 def main():
16     setup(800, 600)
17     speed(0)
18 
19     n = 10
20     for i in range(n):
21         square(80)
22         left(360/n)
23 
24     hideturtle()
25     done()
26 
27 main()

 1 from turtle import *
 2 
 3 setup(800, 600)
 4 pencolor('pink')
 5 
 6 n = 10
 7 for i in range(n):
 8     # 绘制一片花瓣
 9     for j in range(2):
10         circle(80, 90)
11         left(90)
12 
13     right(360/n)
14 
15 hideturtle()
16 done()

 1 from turtle import *
 2 
 3 setup(800, 600)
 4 bgcolor('black')
 5 pencolor('white')
 6 speed(0)
 7 
 8 angle = 0
 9 size = 2
10 
11 n = 5 # 螺旋n边形
12 count = 50 # 循环次数
13 for i in range(count):
14     fd(size)
15     angle += 360/n
16     seth(angle)
17     size += 5
18 
19 hideturtle()
20 done()

 1 from turtle import *
 2 
 3 def moveto(x, y):
 4     penup()
 5     goto(x, y)
 6     pendown()
 7 
 8 color('black')
 9 begin_fill()
10 moveto(-100,-100)
11 for i in range(4):
12     fd(200)
13     left(90)
14 end_fill()
15 
16 color('red')
17 
18 begin_fill()
19 moveto(0,-100)
20 left(45)
21 for i in range(4):
22     fd(100*2**0.5)
23     left(90)
24 end_fill()
25 hideturtle()
26 done()

 1 from turtle import *
 2 
 3 pensize = 5
 4 pencolor('blue')
 5 
 6 radius = 40
 7 for i in range(5):
 8     fd(radius)
 9     left(90)
10     circle(radius,90)
11     left(90)
12     fd(radius)
13     left(90)
14     radius += 20
15 
16 hideturtle()
17 done()

 1 from turtle import *
 2 screensize(100,100,'black')
 3 
 4 def moveto(x, y):
 5     penup()
 6     goto(x, y)
 7     pendown()
 8 
 9 color('yellow')
10 begin_fill()
11 left(45)
12 fd(100)
13 left(90)
14 circle(100,270)
15 left(90)
16 fd(100)
17 end_fill()
18 
19 moveto(10,65)
20 dot(15,'black')
21 
22 moveto(8,70)
23 dot(8,'white')
24 
25 hideturtle()
26 done()