Question

我在画布上用这些函数绘制小圆圈：

这是绘制圆圈的功能：

class Fourmis:

def __init__(self, can, posx, posy, name, radius):
    self.can = can

    self.largeur_can = int(self.can.cget("width"))
    self.hauteur_can = int(self.can.cget("height"))

    self.posx = posx
    self.posy = posy
    self.name = name 
    self.radius = radius

    self.ball1 = self.can.create_oval(self.posy, self.posx, self.posy+radius, self.posx+radius, outline=self.name, fill=self.name, width=2)

    self.nx = randrange(-10,10,1)
    self.nx /= 2.0
    self.ny = randrange(-10,10,1)
    self.ny /= 2.0

    #self.can.bind("<Motion>", self.destruction, add="+") 
    self.statut = True

    self.move()

def move(self):
    if self.statut == True :
        self.pos_ball = self.can.coords(self.ball1)
        self.posx_ball = self.pos_ball[0]
        self.posy_ball = self.pos_ball[1]

        if self.posx_ball < 0 or (self.posx_ball + self.radius) > self.largeur_can:
            self.nx = -self.nx         
        if self.posy_ball < 0 or (self.posy_ball + self.radius) > self.hauteur_can:
            self.ny = -self.ny

        self.can.move(self.ball1, self.nx, self.ny)

        self.can.after(10, self.move)

这个创建画布和圆圈：

class App(Frame):

def __init__(self):
    self.root=Tk()
    self.can=Canvas(self.root,width=800,height=600,bg="black")
    self.can.pack()

    self.create(50, "green")
    self.create(50, "purple")



def mainloop(self):
    self.root.mainloop()


def create(self, i, name):
    for x in range(i):
        self.x=Fourmis(self.can,100,400, name,0)

我将这些行称为运行项目：

jeu = App()
jeu.mainloop()

在不同的线程中执行self.create(50, "green")和self.create(50, "purple")的正确方法是什么？

我尝试了以下方法，但无法让它发挥作用。：

class FuncThread(threading.Thread):
def __init__(self, i, name):
    self.i = i
    self.name = name
    threading.Thread.__init__(self)

def run(self):
    App.create(self, self.i, self.name)

有人能告诉我如何运行这些线程吗？

Answer 1

当需要此功能时，您所做的是通过将它们放入线程共享的队列中来安排您希望执行的事件。这样，在给定的线程中，您指定要通过对其进行排队来运行“create（50，...）”，并且主线程将事件排队并执行它。

以下是在第二个帖子中创建移动球的基本示例：

import threading
import Queue
import random
import math
import time
import Tkinter

random.seed(0)

class App:
    def __init__(self, queue, width=400, height=300):
        self.width, self.height = width, height
        self.canvas = Tkinter.Canvas(width=width, height=height, bg='black')
        self.canvas.pack(fill='none', expand=False)
        self._oid = []
        self.canvas.after(10, self.move)

        self.queue = queue
        self.canvas.after(50, self.check_queue)

    def check_queue(self):
        try:
            x, y, rad, outline = self.queue.get(block=False)
        except Queue.Empty:
            pass
        else:
            self.create_moving_ball(x, y, rad, outline)
        self.canvas.after(50, self.check_queue)

    def move(self):
        width, height = self.width, self.height
        for i, (oid, r, angle, speed, (x, y)) in enumerate(self._oid):
            sx, sy = speed
            dx = sx * math.cos(angle)
            dy = sy * math.sin(angle)
            if y + dy + r> height or y + dy - r < 0:
                sy = -sy
                self._oid[i][3] = (sx, sy)
            if x + dx + r > width or x + dx - r < 0:
                sx = -sx
                self._oid[i][3] = (sx, sy)
            nx, ny = x + dx, y + dy
            self._oid[i][-1] = (nx, ny)
            self.canvas.move(oid, dx, dy)
        self.canvas.update_idletasks()
        self.canvas.after(10, self.move)

    def create_moving_ball(self, x=100, y=100, rad=20, outline='white'):
        oid = self.canvas.create_oval(x - rad, y - rad, x + rad, y + rad,
                outline=outline)
        oid_angle = math.radians(random.randint(1, 360))
        oid_speed = random.randint(2, 5)
        self._oid.append([oid, rad, oid_angle, (oid_speed, oid_speed), (x, y)])

def queue_create(queue, running):
    while running:
        if random.random() < 1e-6:
            print "Create a new moving ball please"
            x, y = random.randint(100, 150), random.randint(100, 150)
            color = random.choice(['green', 'white', 'yellow', 'blue'])
            queue.put((x, y, random.randint(10, 30), color))
        time.sleep(0) # Effectively yield this thread.

root = Tkinter.Tk()
running = [True]

queue = Queue.Queue()

app = App(queue)
app.create_moving_ball()
app.canvas.bind('<Destroy>', lambda x: (running.pop(), x.widget.destroy()))

thread = threading.Thread(target=queue_create, args=(queue, running))
thread.start()

root.mainloop()

多线程python与Tkinter

1 个答案: