Tkinter Python OOP：使用 canvas.move() 一次移动单独的小部件答案

【问题标题】：Tkinter Python OOP: Move seperate widgets at once with canvas.move()Tkinter Python OOP：使用 canvas.move() 一次移动单独的小部件
【发布时间】：2018-09-02 12:21:05
【问题描述】：

我想将我的程序弹跳球程序翻译成 OOP，以便稍微训练 OOP。

我遇到的问题是，如果我在包含无限循环的对象的一个实例上调用一个函数，下一个实例将永远不会调用它的函数。导致只有一个球在移动。

import tkinter as tk
import time
import random

#Define root windows
root = tk.Tk()
root.geometry("800x800")
root.title("TkInter Animation Test")

#Define canvas that is inside the root window

canvas_width = 700
canvas_height = 700

canvas = tk.Canvas(root, width= canvas_width, height= canvas_height, bg="Black")
canvas.pack()


class Oval():

    #Oval creation inside the canvas
    def __init__(self, y1, x1, y2, x2, color):
        self.y1 = y1
        self.x1 = x1

        self.y2= y2
        self.x2= x2
        self.oval = canvas.create_oval(self.x1, self.y1, self.x2, self.y2, fill=color)

    #Moving the Oval(ov1)
    def move(self):
        self.xd = random.randint(5,10)
        self.yd = random.randint(5,10)

        while True:
            canvas.move(self.oval, self.xd, self.yd)
            # print(self.yd, self.xd)
            self.coords = canvas.coords(self.oval)
            # print (self.coords)

            if self.coords[3] + self.yd >= 700 or self.coords[1] + self.yd <= 0:
                if self.yd < 0:
                    self.yd = random.randint(5,10)
                else:
                    self.yd = -(random.randint(5,10))

            if self.coords[2] + self.xd >= 700 or self.coords[0] + self.xd <= 0:
                if self.xd < 0:
                    self.xd = random.randint(5,10)
                else:
                    self.xd = -(random.randint(5,10))

            root.update()
            time.sleep(.01)

ov1 = Oval(10,10,40,40, "blue")
ov2 = Oval(80,80,120,120, "red")
ov3 = Oval(240,240,270,270, "Yellow")
ov4 = Oval(360,360,400,400, "Green")
ov5 = Oval(500,500,540,540, "white")


#Problem is that ov1.move() has a internal loop and ov2.move() will never be called
# ov1.move()
# ov2.move()
# ov3.move()
# ov4.move()
# ov5.move()

tk.mainloop()

【问题讨论】：

当第一个椭圆在True 循环中移动时。它永远不会继续
是的，我确实意识到了这一点。但我不知道如何解决这个问题。
你可以单独制作椭圆（没有类），然后它们在一个循环中移动
对不起，我不想太饱了 :) 但我已经完成了。但我想尝试使用 oop 来实现使用 oop 的常规

标签： python loops oop animation tkinter

【解决方案1】：

我自己解决了。

我刚刚从类中取出了 While True: 循环，并在下面的循环中调用了该函数。

import tkinter as tk
import time
import random

#Define root windows
root = tk.Tk()
root.geometry("800x800")
root.title("TkInter Animation Test")

#Define canvas that is inside the root window

canvas_width = 700
canvas_height = 700



canvas = tk.Canvas(root, width= canvas_width, height= canvas_height, bg="Black")
canvas.pack()


class Oval():

    #Oval creation inside the canvas
    def __init__(self, y1, x1, y2, x2, color):
        self.y1 = y1
        self.x1 = x1

        self.y2= y2
        self.x2= x2
        self.oval = canvas.create_oval(self.x1, self.y1, self.x2, self.y2, fill=color)

        self.xd = random.randint(5,10)
        # self.xd = 10
        self.yd = random.randint(5,10)
        # self.yd = 10

    #Moving the Oval(ov1)
    def move(self):

        canvas.move(self.oval, self.xd, self.yd)
        # print(self.yd, self.xd)
        self.coords = canvas.coords(self.oval)
        # print (self.coords)

        if self.coords[3] + self.yd >= 700 or self.coords[1] + self.yd <= 0:
            if self.yd < 0:
                self.yd = random.randint(5,10)
                # self.yd = 10
            else:
                self.yd = -(random.randint(5,10))
                # self.yd = -10

        if self.coords[2] + self.xd >= 700 or self.coords[0] + self.xd <= 0:
            if self.xd < 0:
                self.xd = random.randint(5,10)
                # self.xd = 10
            else:
                self.xd = -(random.randint(5,10))
                # self.xd = -10

        root.update()
        # time.sleep(.000000001)


ov1 = Oval(10,10,40,40, "blue")
ov2 = Oval(80,80,120,120, "red")
ov3 = Oval(240,240,270,270, "Yellow")
ov4 = Oval(360,360,400,400, "Green")
ov5 = Oval(500,500,540,540, "white")

while True:
    ov1.move()
    ov2.move()
    ov3.move()
    ov4.move()
    ov5.move()
    time.sleep(.01)


tk.mainloop()

【讨论】：