賴家靖 條件判斷
from tkinter import * #或者import tkinter as tk
import math#輸入數學MATH函式庫
tk = Tk() #建構視窗名為tk
tk.geometry('1200x400')#視窗 寬1200像素
tk.title(" 賴家靖python tkinter三角函數")
canvas = Canvas(tk, width=1200, height=400, bg='PINK')
canvas.grid(row=0,column=0,padx=5,pady=5,columnspan=3)
delay=3 # 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#global全球,local當地
if(x1 == 0):
inc=1
canvas.delete("all")
elif(x1 == 1200):
inc=-1
canvas.delete("all")
x2 = x1 - 1 #換到下個+1然後改成-1一定要將起始點改成右端
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='BLUE',width=10)
L2=canvas.create_line(x1,z1,x2,z2,fill='yellow',width=10)
if (x2 > 0): #沒有超過, 記得將 "<" 改成運算
x1,y1,z1=x2,y2,z2#下一個起點是現在終點
canvas.after(delay,LH)#每隔delay執行
else:
canvas.delete("all")
x1,y1,z1=1200,200,10#下一個起點是回到原點0右端1200
canvas.after(delay,LH)
#return沒你的事,滾回你老家
LH() #執行LauHou老猴
tk.mainloop()
期末考沒有鍵盤事件< >https://jiajinglai38.blogspot.com/2026/01/python.html
回覆刪除curly brackets. https://jiajinglai38.blogspot.com/2025/12/python.html
https://jiajinglai38.blogspot.com/2025/12/javascriptvs-vscode_21.html
https://jiajinglai38.blogspot.com/2025/12/javascriptvs-vscode.html
https://jiajinglai38.blogspot.com/2025/12/blog-post.html