python物体跟着鼠标走_python开发之tkinter实现图形随鼠标移动的方法

快来打我* 2022-11-05 12:53 175阅读 0赞

from tkinter import \*

\#1.获取到小圆当前的圆心坐标(x1, y1)

\#2.获取到小圆移动的圆心坐标(x2, y2)

\#3.把小圆从坐标(x1, y1)移动到坐标(x2, y2)

\_\_author\_\_ = \{'name' : 'Hongten',

'mail' : 'hongtenzone@foxmail.com',

'blog' : 'http://blog.csdn.net/',

'QQ': '648719819',

'created' : '2013-09-20'\}

class Eay(Frame):

def createWidgets(self):

\#\# The playing field

self.draw = Canvas(self, width=500, height=500)

\#鼠标位置

self.mouse\_x = 450

self.mouse\_y = 250

\#圆心坐标(x,y)

self.oval\_zero\_x = 250

self.oval\_zero\_y = 250

\#外面大圆半径

self.oval\_r = 100

\#里面小圆半径

self.oval\_R = 30

self.oval\_r1 = self.oval\_r - self.oval\_R + 0.5

self.oval\_r2 = self.oval\_r - self.oval\_R - 0.5

\#小圆

self.letter\_ball\_x1 = 250

self.letter\_ball\_y1 = 250

\# The ball 外面大圆

self.ball = self.draw.create\_oval((self.oval\_zero\_x - self.oval\_r),

(self.oval\_zero\_y - self.oval\_r),

(self.oval\_zero\_x + self.oval\_r),

(self.oval\_zero\_y + self.oval\_r),

fill="white")

self.ball = self.draw.create\_oval((self.oval\_zero\_x - self.oval\_r1),

(self.oval\_zero\_y - self.oval\_r1),

(self.oval\_zero\_x + self.oval\_r1),

(self.oval\_zero\_y + self.oval\_r1),

fill="blue")

self.ball = self.draw.create\_oval((self.oval\_zero\_x - self.oval\_r2),

(self.oval\_zero\_y - self.oval\_r2),

(self.oval\_zero\_x + self.oval\_r2),

(self.oval\_zero\_y + self.oval\_r2),

fill="white")

\#里面小圆

self.ball\_over = self.draw.create\_oval((self.oval\_zero\_x - self.oval\_R),

(self.oval\_zero\_y - self.oval\_R),

(self.oval\_zero\_x + self.oval\_R),

(self.oval\_zero\_y + self.oval\_R),

fill="red")

self.draw.pack(side=LEFT)

def mouseMove(self, event):

self.mouse\_x = event.x

self.mouse\_y = event.y

if SHOW\_LOG:

print('\#' \* 50)

print('鼠标的坐标为：(\{\}, \{\})'.format(self.mouse\_x, self.mouse\_y))

print('小圆当前坐标为：(\{\}, \{\})'.format(self.letter\_ball\_x1, self.letter\_ball\_y1))

'''获取到小圆移动的圆心坐标(x2, y2)'''

ax\_x = abs(self.mouse\_x - self.oval\_zero\_x)

ax\_y = abs(self.mouse\_y - self.oval\_zero\_y)

if SHOW\_LOG:

print('坐标A(oval\_zero\_x, oval\_zero\_y)到坐标X(mouse\_x, mouse\_y)的距离为AX')

print('AX中ax\_x = \{\}, ax\_y = \{\}'.format(ax\_x, ax\_y))

ax\_len = ((ax\_x \*\* 2) + (ax\_y \*\* 2))\*\*0.5

if SHOW\_LOG:

print('AX的长度为：\{\}'.format(ax\_len))

\#如果鼠标坐标在(ax\_len > |r-R|)

if ax\_len > abs(self.oval\_r - self.oval\_R):

ac\_len = abs(self.oval\_r - self.oval\_R)

if SHOW\_LOG:

print('AC的产度为:\{\}'.format(ac\_len))

if int(self.mouse\_x - self.oval\_zero\_x) != 0:

if int(self.mouse\_y - self.oval\_zero\_y) != 0:

\#求直线斜率 y = kx + b

k = (self.mouse\_y - self.oval\_zero\_y)/(self.mouse\_x - self.oval\_zero\_x)

if SHOW\_LOG:

print('鼠标到大圆圆心的直线的斜率为：\{\}'.format(k))

b = self.mouse\_y - (k \* self.mouse\_x)

\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#

\#小圆移动后的坐标

\#这里有三个条件：

\# 1.小圆的圆心坐标(x1, y1)在直线AC上(y = kx + b)

\# 2.(r-R)^2 = x1^2 + y1^2 由1,2可以得到 => (r-R)^2 = x1^2 + 2\*x1\*k\*b + b^2 => x1有两个值，通过3判断x1的符号，从而求出y1

\# 3.if self.mousex\_x > 0:

\# x1 > 0

\#这是一个二元二次方程，方程的解有两组，不过通过鼠标的位置self.mouse\_x(self.mouse\_y)可以判断圆心坐标x1(y1)

letter\_ball\_x2 = ((ac\_len \* (abs(self.mouse\_x - self.oval\_zero\_x)))/ax\_len) + self.letter\_ball\_x1

letter\_ball\_y2 = (letter\_ball\_x2 \* k) + b

if SHOW\_LOG:

print('小圆当前坐标为：(\{\}, \{\})'.format(self.letter\_ball\_x1, self.letter\_ball\_y1))

print('小圆移动后坐标为：(\{\}, \{\})'.format(letter\_ball\_x2, letter\_ball\_y2))

\#把小圆从坐标(x1, y1)移动到坐标(x2, y2)

self.moved\_x2 = letter\_ball\_x2 - self.letter\_ball\_x1

self.moved\_y2 = letter\_ball\_y2 - self.letter\_ball\_y1

if SHOW\_LOG:

print('需要移动的距离是：(\{\}, \{\})'.format(int(self.moved\_x2), int(self.moved\_y2)))

self.draw.move(self.ball\_over, int(self.moved\_x2), int(self.moved\_y2))

self.letter\_ball\_x1 = letter\_ball\_x2

self.letter\_ball\_y1 = letter\_ball\_y2

else:

print('鼠标在X轴上')

else:

print('鼠标在Y轴上')

else:

if SHOW\_LOG:

print('小圆的移动后的坐标就是鼠标坐标')

\#小圆移动后的坐标

letter\_ball\_x2 = self.mouse\_x

letter\_ball\_y2 = self.mouse\_y

if SHOW\_LOG:

print('小圆移动后坐标为：(\{\}, \{\})'.format(letter\_ball\_x2, letter\_ball\_y2))

\#把小圆从坐标(x1, y1)移动到坐标(x2, y2)

self.moved\_x2 = letter\_ball\_x2 - self.letter\_ball\_x1

self.moved\_y2 = letter\_ball\_y2 - self.letter\_ball\_y1

if SHOW\_LOG:

print('需要移动的距离是：(\{\}, \{\})'.format(int(self.moved\_x2), int(self.moved\_y2)))

self.draw.move(self.ball\_over, int(self.moved\_x2), int(self.moved\_y2))

self.letter\_ball\_x1 = letter\_ball\_x2

self.letter\_ball\_y1 = letter\_ball\_y2

def move\_ball(self, \*args):

\#当鼠标在窗口中按下左键拖动的时候执行

\#Widget.bind(self.draw, "", self.mouseMove)

\#当鼠标在大圆内移动的时候执行

self.draw.tag\_bind(self.ball, "", self.mouseMove)

def \_\_init\_\_(self, master=None):

global letter\_ball\_x2

letter\_ball\_x2 = 0

global letter\_ball\_y2

letter\_ball\_y2 = 0

global SHOW\_LOG

SHOW\_LOG = True

Frame.\_\_init\_\_(self, master)

Pack.config(self)

self.createWidgets()

self.after(10, self.move\_ball)

game = Eay()

game.mainloop()

希望本文所述对大家Python程序设计有所帮助。

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python物体跟着鼠标走_python开发之tkinter实现图形随鼠标移动的方法

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