使用tkinter在python中更新画布上的多个椭圆坐标

时间:2016-02-02 22:58:09

标签: python tkinter tkinter-canvas

我正在制作一个gui动画,一次一个地翻转一个硬币。 我有两个类cointoss.py和flipbell.py。

Cointoss类为硬币生成值更改,并使用flipbell为该过程设置动画。

好像现在我的代码工作一次为一枚硬币制作动画但不是所有硬币一次。

当我说所有硬币时,这是逻辑:第一个硬币根据价值变化下降,接下来另一个硬币下降但第一个硬币值也相应更新,等等。

我需要帮助如何推进到目前为止我所尝试的内容。我已经使用for循环来为进程设置动画,我正在考虑使用递归方法来获得逻辑部分。

任何有关现有代码或想法的帮助都会很棒。

flipbell.py

from tkinter import Tk, Canvas, Button, W, E
import random
from math import pi, sin, cos
from cointoss import *


class FlipBell(object):
    """
    GUI to simulate cointoss.
    """
    def __init__(self, wdw, dimension, increment, delay):
        """
        Determines the layout of the GUI.
        wdw : top level widget, the main window,
        dimension : determines the size of the canvas,
        increment : step size for a billiard move,
        delay : time between updates of canvas.
        """
        wdw.title('Coin flips and Bell Curve')
        self.dim = dimension # dimension of the canvas
        self.inc = increment
        self.dly = delay
        self.togo = False # state of animation
        # initial coordinates of the ball
        self.xpt = self.dim/2
        self.ypt = 0
        self.cnv = Canvas(wdw, width=self.dim,\
            height=self.dim, bg='white')
        self.cnv.grid(row=0, column=0, columnspan=2)
        self.bt0 = Button(wdw, text='start',\
            command=self.start)
        self.bt0.grid(row=1, column=0, sticky=W+E)
        self.bt1 = Button(wdw, text='stop',\
            command=self.stop)
        self.bt1.grid(row=1, column=1, sticky=W+E)

    def map2table(self, pnt):
        """
        Keeps the ball on the canvas table.
        """
        if pnt < 0:
            (quo, rest) = divmod(-pnt, self.dim)
        else:
            (quo, rest) = divmod(pnt, self.dim)
        return rest

    def placecoin(self, xpt, ypt):
        self.cnv.create_oval(xpt-1, ypt-1, xpt+1, ypt+1,\
            width=2, outline='red', fill='red', tags='coin')

    def drawball(self):
        """
        Draws the ball on the canvas.
        """
        xpt = self.map2table(self.xpt)
        ypt = self.map2table(self.ypt)
        self.cnv.delete('dot')
        self.cnv.create_oval(xpt-1, ypt-1, xpt+1, ypt+1,\
            width=1, outline='black', fill='red', tags='dot')

    def animate(self):
        """
        Performs the animation.
        """
        self.drawball()
        val = []
        for k in range(400):
            val1 = CoinToss.cointoss(3,k,self.dim//2)
            val.append(val1)

        points = {}
        for i in range(1,401):
            points[i] = 0
        for i in range(0,400):
            for j in range(0,400):
                (xpt, ypt) = (self.xpt, self.ypt)
                self.xpt = val[i][1][j]
                # print("x %d",self.xpt)
                self.ypt = ypt + 1
                # print("y %d",self.ypt)
                self.cnv.after(self.dly)
                self.drawball()
                self.cnv.update()

                #Puts the coin on top each other
                if self.ypt == 400:
                    if points[self.xpt]>=1:
                        self.placecoin(val[i][1][-1],400-points[self.xpt])
                    else:
                        self.placecoin(val[i][1][-1],400)
                    points[self.xpt]+=3
                    self.ypt = 0

    def start(self):
        """
        Starts the animation.
        """
        self.togo = True
        self.animate()

    def stop(self):
        """
        Stops the animation.
        """
        self.togo = False

def main():
    """
    Defines the dimensions of the canvas
    and launches the main event loop.
    """
    top = Tk()
    dimension = 400 # dimension of canvas
    increment = 10  # increment for coordinates
    delay = 1      # how much sleep before update
    num_flips = 3
    num_value = dimension//2
    FlipBell(top, dimension, increment, delay)
    top.mainloop()

if __name__ == "__main__":
    main()

cointoss.py

from random import randint
import random


class CoinToss:
    coin = 0
    def __init__(self, value,num_flip):
        # self.id = 1
        self.v = value
        self.state = 1
        self.flip = num_flip
        CoinToss.coin += 1


    def cointoss(self,coin,value):
        print('The ball at the start: ball: %d, state: %d, value: %d' % (coin, self, value))
        value_change = value
        coin_change = []
        for i in range(1,400+1):
            value = value_change
            value_change = CoinToss.flip(value)
            print('after flip %d, ball: %d, state: %d, value: %d' % (i,coin, i, value_change))
            coin_change.append(value_change)
        return([coin,coin_change])


    def flip(self):
        rand_value = randint(0, 1)
        if rand_value == 1:
            self +=1
        else:
            self -=1
        return self

1 个答案:

答案 0 :(得分:1)

你已经命名了一个函数和一个变量&#34; flip&#34;在CoinToss这令人困惑。此外,您使用&#34;标签&#34;关键字,它应该是&#34;标记&#34;。编写此代码的方法不止一种。下面的代码不是一个完整的解决方案,而是一个简单的例子,展示了如何使用CoinToss类来创建和移动单个球(不检查画布的移动)。 FlipBell类将每个CoinToss实例存储在一个列表中并调用&#34; flip&#34;每次创建球时每个类的功能。您也可以使用&#34;&#34;在CoinToss类中,反复调用flip函数。

from tkinter import *
from random import randint

class FlipBell(object):
    """
    GUI to simulate cointoss.
    """
    def __init__(self, wdw, dimension, delay):
        """
        Determines the layout of the GUI.
        wdw : top level widget, the main window,
        dimension : determines the size of the canvas,
        increment : step size for a billiard move,
        delay : time between updates of canvas.
        """
        wdw.title('Coin flips and Bell Curve')
        self.cnv = Canvas(wdw, width=dimension,
                          height=dimension, bg='white')
        self.cnv.grid()

        self.ct_instances=[]
        self.colors=["blue", "red", "yellow", "gray", "green"]
        self.delay=delay
        self.offset=0
        self.create_next()

    def create_next(self):
        """ create one ball for each color in self.colors
            and call each existing ball's flip function to
            move it a random amount
        """
        x=5
        y=5
        incr=10*self.offset
        CT=CoinToss(self.cnv, x+incr, y+incr, self.colors[self.offset])
        ##save each CoinToss (ball) instance in a list
        self.ct_instances.append(CT)
        self.offset += 1

        ## call flip (move ball) for each instance
        for instance in self.ct_instances:
            instance.flip()

        if self.offset < len(self.colors):
            self.cnv.after(self.delay, self.create_next)

class CoinToss:
    def __init__(self, canvas, start_x, start_y, color):
        self.cnv=canvas
        self.cointoss(start_x, start_y, color)


    def cointoss(self, start_x, start_y, color):
        self.this_ball=self.cnv.create_oval(start_x-5, start_y-5, start_x+5, start_y+5,
                       outline='black', fill=color, tag="dot")

    def flip(self):
        """ move the ball created for this class instance by a random amount
        """
        rand_value = randint(10, 50)
        self.cnv.move(self.this_ball, rand_value, rand_value)

if __name__ == "__main__":
    top = Tk()
    dimension = 400 # dimension of canvas
    delay = 500     # how much sleep before update --> 1/2 second
    num_flips = 3
    FP=FlipBell(top, dimension, delay)
    top.mainloop()