Python 让小海龟互动起来——turtle和tkinter混合使用!
2021/10/18 17:11:56
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Turtle 窗口
请看下图,turtle窗口图标是一片小叶子,估计它就是继承自 tkinter 库。
tkinter 窗口
参阅了一些资料,发现 turtle 方法可直接在 tkinter 的画布Canvas上操作:
源代码
from tkinter import * from turtle import RawTurtle def circ(): tu.penup() tu.home() tu.clear() tu.speed(0) [x,y,R] = et1.get().split(',') try: x = int(x.replace('(','')) y = int(y.replace(')','')) R = int(R.strip()) except: x,y,R = 0,0,50 #输入错误则赋予默认值 tu.goto(x,y-R) tu.pendown() tu.circle(R) def rect(): tu.penup() tu.home() tu.clear() tu.speed(0) tu.color('red', 'yellow') tu.begin_fill() [d,rad] = et2.get().split(',') try: d = int(d) rad = int(rad) except: d,rad = 200,216 #输入错误则赋予默认值 tu.pendown() tu.back(d//5) while True: tu.forward(d) tu.left(rad) if abs(tu.pos()[0]+d//5)<0.1 and abs(tu.pos()[1])<0.1: break tu.end_fill() def taiji(): tu.penup() tu.home() tu.clear() tu.speed(0) d = et3.get() try: d = int(d) except: d = 120 #输入错误则赋予默认值 tu.hideturtle() tu.goto(d//2,-d) tu.pendown() tu.begin_fill() tu.color('black','black') tu.circle(d,extent=180) tu.circle(d//2,extent=180) tu.circle(-d//2,extent=180) tu.end_fill() tu.circle(-d,extent=180) tu.penup() tu.goto(d//2,-d//6*4) tu.pendown() tu.begin_fill() tu.fillcolor("black") tu.circle(d//5,extent=360) tu.end_fill() tu.penup() tu.goto(d//2,d//3) tu.pendown() tu.begin_fill() tu.fillcolor("white") tu.circle(d//5,extent=360) tu.end_fill() tu.penup() def main(): global tu,et1,et2,et3 root = Tk() root.geometry('520x520+150+300') root.title('turtle在tkinter.Canvas上的操作') root.resizable(False, False) canvas = Canvas(root, width=640, height=400) canvas.pack() tu = RawTurtle(canvas) tu.hideturtle() et1 = Entry(root, width=12) et1.place(x = 30, y = 480) et1.insert(0,'(50,-20), 100') bt1 = Button(root,text=' 画圆 ',command=circ) bt1.place(x = 60, y = 425) et2 = Entry(root, width=12) et2.place(x = 190, y = 480) et2.insert(0,'200, 216') bt2 = Button(root,text=' 多角星(或多边形) ',command=rect) bt2.place(x = 180, y = 425) et3 = Entry(root, width=12) et3.place(x = 360, y = 480) et3.insert(0,'120') bt3 = Button(root,text=' 太极 ',command=taiji) bt3.place(x = 380, y = 425) root.mainloop() if __name__ == '__main__': main()
turtle和tkinter混合使用
turtle和tkinter两者搭配使用,使得 turtle 的画图参数可以由 tkinter 的控件当场设置,这样就实现了turtle小海龟的现场互动,运行效果见图二。
三个Entry控件,分别设置:
1. 圆心坐标和圆的直径;
2. 多边形的边长和边的转动角度;
3. 太极图的外圆直径。
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