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我正在做一个小外星人项目来帮助学习tkinter中的图形,我遇到了一个问题。我试图让外星人的眼球保持在眼睛内部,但仍然会移动,但这需要我检测眼球的边缘,这是一个圆圈。不太确定tkinter中的坐标怎么样(除了基础),所以任何帮助表示赞赏。谢谢!Tkinker围绕圆圈坐标处理蟒蛇3
from tkinter import *
from threading import Timer
import random
import time
global canvas, root
root = Tk()
root.title("Alien")
root.attributes("-topmost", 1)
canvas = Canvas(root, height=300, width =400)
canvas.pack()
Blinking = False
class Alien:
def __init__(self):
global canvas, root
self.body = canvas.create_oval(100,150,300,250, fill = "green")
self.eye = canvas.create_oval(170,70,230,130, fill = "white")
self.eyeball = canvas.create_oval(190,90,210,110, fill = "black")
self.mouth = canvas.create_oval(150,220,250,240, fill = "red")
self.neck = canvas.create_line(200,150,200,130)
self.hat = canvas.create_polygon(180,75,220,75,200,20, fill = "blue")
self.words = canvas.create_text(200,800, text = "I'm an alien!", anchor="nw")
root.update()
def openMouth(self):
global canvas, root
canvas.itemconfig(self.mouth, fill = "black")
root.update()
def closeMouth(self):
global canvas, root
canvas.itemconfig(self.mouth, fill = "red")
root.update()
def burp(self, event):
self.openMouth()
canvas.itemconfig(self.words, text = "BURRRRP!")
time.sleep(0.5)
self.closeMouth()
def moveEye(self,event):
global root, canvas
canvas.move(alien.eyeball , random.randint(-1,1) , random.randint(-1,1))
root.update()
def blink(self,event):
canvas.itemconfig(self.eye, fill = "green")
canvas.itemconfig(self.eyeball, state=HIDDEN)
Blinking = True
root.update()
def unblink(self,event):
canvas.itemconfig(self.eye, fill = "white")
canvas.itemconfig(self.eyeball, state=NORMAL)
Blinking = False
root.update()
alien = Alien()
alien.openMouth()
time.sleep(1)
alien.closeMouth()
canvas.bind_all("<Button-1>", alien.burp)
canvas.bind_all("<KeyPress-a>", alien.blink)
Timer(2, alien.moveEye).start()
while not Blinking:
alien.moveEye(event)
if alien.moveEye.event.x > 190:
canvas.move(alien.eyeball, -1 , 0)
你能在几何术语解释现实问题? (我从来没有见过外星人:)) – MBo
一个圆圈随着另一个圆圈内的随机算法移动,我需要设置参数,因此它不能逃脱圆圈。所以也许有一个方程来检测圆周的坐标(r平方的平方根减x平方?)?谢谢 :) –