Python Turtle库绘制表盘时钟

运行效果：

源代码：

  1 # coding=utf-8

  2

  3 import turtle

  4 from datetime import *

  5

  6 # 抬起画笔，向前运动一段距离放下

  7 def Skip(step):

  8     turtle.penup()

  9     turtle.forward(step)

 10     turtle.pendown()

 11

 12 def mkHand(name, length):

 13     # 注册Turtle形状，建立表针Turtle

 14     turtle.reset()

 15     Skip(-length * 0.1)

 16     # 开始记录多边形的顶点。当前的乌龟位置是多边形的第一个顶点。

 17     turtle.begin_poly()

 18     turtle.forward(length * 1.1)

 19     # 停止记录多边形的顶点。当前的乌龟位置是多边形的最后一个顶点。将与第一个顶点相连。

 20     turtle.end_poly()

 21     # 返回最后记录的多边形。

 22     handForm = turtle.get_poly()

 23     turtle.register_shape(name, handForm)

 24

 25 def Init():

 26     global secHand, minHand, hurHand, printer

 27     # 重置Turtle指向北

 28     turtle.mode("logo")

 29     # 建立三个表针Turtle并初始化

 30     mkHand("secHand", 135)

 31     mkHand("minHand", 125)

 32     mkHand("hurHand", 90)

 33     secHand = turtle.Turtle()

 34     secHand.shape("secHand")

 35     minHand = turtle.Turtle()

 36     minHand.shape("minHand")

 37     hurHand = turtle.Turtle()

 38     hurHand.shape("hurHand")

 39

 40     for hand in secHand, minHand, hurHand:

 41         hand.shapesize(1, 1, 3)

 42         hand.speed(0)

 43

 44     # 建立输出文字Turtle

 45     printer = turtle.Turtle()

 46     # 隐藏画笔的turtle形状

 47     printer.hideturtle()

 48     printer.penup()

 49

 50 def SetupClock(radius):

 51     # 建立表的外框

 52     turtle.reset()

 53     turtle.pensize(7)

 54     for i in range(60):

 55         Skip(radius)

 56         if i % 5 == 0:

 57             turtle.forward(20)

 58             Skip(-radius - 20)

 59

 60             Skip(radius + 20)

 61             if i == 0:

 62                 turtle.write(int(12), align="center", font=("Courier", 14, "bold"))

 63             elif i == 30:

 64                 Skip(25)

 65                 turtle.write(int(i/5), align="center", font=("Courier", 14, "bold"))

 66                 Skip(-25)

 67             elif (i == 25 or i == 35):

 68                 Skip(20)

 69                 turtle.write(int(i/5), align="center", font=("Courier", 14, "bold"))

 70                 Skip(-20)

 71             else:

 72                 turtle.write(int(i/5), align="center", font=("Courier", 14, "bold"))

 73             Skip(-radius - 20)

 74         else:

 75             turtle.dot(5)

 76             Skip(-radius)

 77         turtle.right(6)

 78

 79 def Week(t):

 80     week = ["星期一", "星期二", "星期三",

 81             "星期四", "星期五", "星期六", "星期日"]

 82     return week[t.weekday()]

 83

 84 def Date(t):

 85     y = t.year

 86     m = t.month

 87     d = t.day

 88     return "%s年%d月%d日" % (y, m, d)

 89

 90 def Tick():

 91     # 绘制表针的动态显示

 92     t = datetime.today()

 93     second = t.second + t.microsecond * 0.000001

 94     minute = t.minute + second / 60.0

 95     hour = t.hour + minute / 60.0

 96     secHand.setheading(6 * second)

 97     minHand.setheading(6 * minute)

 98     hurHand.setheading(30 * hour)

 99

100     turtle.tracer(False)

101     printer.forward(65)

102     printer.write(Week(t), align="center",

103                   font=("Courier", 14, "bold"))

104     printer.back(130)

105     printer.write(Date(t), align="center",

106                   font=("Courier", 14, "bold"))

107     printer.home()

108     turtle.tracer(True)

109

110     # 100ms后继续调用tick

111     turtle.ontimer(Tick, 100)

112

113 def main():

114     # 打开/关闭龟动画，并为更新图纸设置延迟。

115     turtle.tracer(False)

116     Init()

117     SetupClock(160)

118     turtle.tracer(True)

119     Tick()

120     turtle.mainloop()

121

122 if __name__ == "__main__":

123     main()

Python Turtle库绘制表盘时钟的相关教程结束。