from tkinter import * #或者import tkinter as tk import math #輸入數學函式庫 tk = Tk() #建構視窗名為tk tk.geometry('1200x400')#視窗 寬1200像素 tk.title("王婷儀python tkinter三角函數") canvas = Canvas(tk, width=1200, height=400, bg='black') canvas.grid(row=0,column=0,padx=5,pady=5,columnspan=3) delay=2 # milliseconds, 1/1000秒 x1,y1,z1=1200,200,10#python特徵,多變數=對等值 h=190 #上下範圍,相當於數學1到-1 def LH(): global x1, y1, z1, inc #global全球,local當地 if (x1 == 0): #判斷是否在左端 inc = 1 #改成往右邊走 canvas.delete("all") elif( x1 == 1200):#判斷是否在右端 inc = -1 #改成往左邊走 canvas.delete("all") x2 = x1 + inc #換到下個可能inc=1, 或inc=-1 y2=200 - h*math.sin(0.02*x2) z2=200 - h*math.cos(0.02*x2) L1=canvas.create_line(x1,y1,x2,y2,fill='white',width=15) L2=canvas.create_line(x1,z1,x2,z2,fill='pink',width=15) x1,y1,z1=x2,y2,z2#下一個起點是現在終點 canvas.after(delay,LH) LH() #執行LauHou老猴 tk.mainloop()
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