Python 练习实例65

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cooldog123pp|

楼主 | 2022-9-25 20:48 | 只看该作者 |只看大图回帖奖励

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python

题目：一个最优美的图案。　　

程序分析：无。

程序源代码：

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#!/usr/bin/python

# -*- coding: UTF-8 -*-



import math

class PTS:

    def __init__(self):

        self.x = 0

        self.y = 0

points = []



def LineToDemo():

    from Tkinter import *

    screenx = 400

    screeny = 400

    canvas = Canvas(width = screenx,height = screeny,bg = 'white')



    AspectRatio = 0.85

    MAXPTS = 15

    h = screeny

    w = screenx

    xcenter = w / 2

    ycenter = h / 2

    radius = (h - 30) / (AspectRatio * 2) - 20

    step = 360 / MAXPTS

    angle = 0.0

    for i in range(MAXPTS):

        rads = angle * math.pi / 180.0

        p = PTS()

        p.x = xcenter + int(math.cos(rads) * radius)

        p.y = ycenter - int(math.sin(rads) * radius * AspectRatio)

        angle += step

        points.append(p)

    canvas.create_oval(xcenter - radius,ycenter - radius,

                       xcenter + radius,ycenter + radius)

    for i in range(MAXPTS):

        for j in range(i,MAXPTS):

            canvas.create_line(points[i].x,points[i].y,points[j].x,points[j].y)



    canvas.pack()

    mainloop()

if __name__ == '__main__':

    LineToDemo()