tkinter分子模拟问题

Question

我已经用tkinter构造了一个粒子晶格，现在我希望该晶格中的每个粒子都根据我从两个文本文件读入数组的x和y坐标列表进行移动。 我试图创建一个内部带有使用canvas.move函数定义运动的函数的类，但出现错误TclError：错误的＃坐标：预期为0或4，得到了400。如何解决这个问题？

from Tkinter import *
import random
import time
import csv


tk = Tk()
N = 100
T = 500
canvas = Canvas(tk, width=100, height=100)
tk.title("Test")
canvas.pack()
n = 5
t = 10

step1 = []
step2 = []
textFile1 = open('/Users/francislempp/Desktop/major project/C++     programs/Molecular Dynamics 2D/Molecular_Dynamics_2D-gupnvjunowwmjcfiyoursdhzytow/Build/Products/Debug/motionX', 'r')
lines = textFile1.readlines()
for line in lines:
    step1.append(line.split(" "))

textFile2 = open('/Users/francislempp/Desktop/major project/C++ programs/Molecular Dynamics 2D/Molecular_Dynamics_2D-gupnvjunowwmjcfiyoursdhzytow/Build/Products/Debug/motionY', 'r')
lines = textFile2.readlines()
for line in lines:
    step2.append(line.split(" "))


def moves(xspeed, yspeed):
    canvas.move(xspeed, yspeed)        

class Ball:
    def __init__(self, x, y, color):
        self.x = x
        self.y = y
        self.shape = canvas.create_oval((x,y,x,y), fill = color)


    def move(self):
        canvas.move(self.shape, self.x, self.y)
        pos = canvas.coords(self.shape)
        if pos[3] >= 100 or pos[1] <= 0:
            self.y = -self.y
        if pos[2] > 100 or pos[0] <= 0:
            self.x = -self.x

    def delete(self):
        canvas.delete(self.shape)


balls = []


for x in range(4,100,10):
    for y in range(4,100,10):
        #canvas.create_oval((x,y,x,y), fill='red')
        Ball(x,y,"red")

tk.update()

for i in step1:
    for j in step2:
        Ball(i,j,"red")
        Ball.move()
        tk.update()




tk.mainloop()

Answer 1

您必须将项目保存在列表中并使用此列表进行移动

我复制上一个问题的例子

import tkinter as tk
import random

# --- functions ---

def move():
    for point_id in points:
        x = random.randint(-1, 1)
        y = random.randint(-1, 1)
        canvas.move(point_id, x, y)

    root.after(100, move)

# --- main ---

points = []

root = tk.Tk()

canvas = tk.Canvas(root, width=100, height=100)
canvas.pack()

for x in range(4, 100, 10):
    for y in range(4, 100, 10):
        point_id = canvas.create_oval(x, y, x, y, fill="red")
        points.append(point_id)

move()

root.mainloop()

---

编辑：与您的类，但没有文件中的数据。

我使用random而不是文件中的数据来显示如何创建粒子并移动它们。

每个球都以自己的速度/方向移动，触摸边界时会改变。

import tkinter as tk
import random

# --- classes ---

class Ball:

    def __init__(self, x, y, speed_x, speed_y, color):
        self.speed_x = speed_x
        self.speed_y = speed_y
        self.shape = canvas.create_oval((x, y, x, y), fill=color)

    def move(self):

        canvas.move(self.shape, self.speed_x, self.speed_y)

        pos = canvas.coords(self.shape)

        # change speed/direction when touch border
        if pos[3] >= 100 or pos[1] <= 0:
            self.speed_y = -self.speed_y
        if pos[2] > 100 or pos[0] <= 0:
            self.speed_x = -self.speed_x

    def delete(self):
        canvas.delete(self.shape)

# --- functions ---

def move():
    for ball in all_balls:
        ball.move()

    root.after(100, move)

# --- main ---

root = tk.Tk()

canvas = tk.Canvas(root, width=100, height=100)
canvas.pack()

all_balls = []

for x in range(4, 100, 10):
    for y in range(4, 100, 10):
        offset_x = random.randint(-2, 2)
        offset_y = random.randint(-2, 2)
        all_balls.append(Ball(x, y, offset_x, offset_y, "red"))

move()

root.mainloop()