7925 - [B]实例065：画组合图形

admin · 发表于 2021-10-20 08:45:41

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题目：一个最优美的图案。
程序分析：无。

import math
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from tkinter import *6 m8 [4 {# s* V( d; ^# Q0 n% V
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class PTS:% e3 t/ A. A# t! ?
def __init__(self):" l$ p. C v3 }* V& ^% a
self.x = 0, H2 X) t. w$ B2 k! R8 Y L
self.y = 0
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points = []
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def LineToDemo():1 }; I9 ^0 K/ ^5 O/ n t
screenx = 400
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screeny = 400
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canvas = Canvas(width = screenx,height = screeny,bg = 'white')6 h3 e/ s5 T. U }. t1 _
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AspectRatio = 0.85" y1 l. B; }& \2 E4 N! c* S8 v
MAXPTS = 15
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h = screeny# u H. p1 m8 j
w = screenx
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xcenter = w / 27 e' c, \7 R- r' |
ycenter = h / 2) d+ t/ Y. Y* @& m* W) S' {
radius = (h - 30) / (AspectRatio * 2) - 204 l6 \; d O2 p& q) w2 l, J0 o
step = 360 / MAXPTS
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angle = 0.05 e8 t; C+ a9 `
for i in range(MAXPTS):1 T, p2 Z- a. @2 ?6 v" G% j+ X/ m8 M
rads = angle * math.pi / 180.0
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p = PTS()
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p.x = xcenter + int(math.cos(rads) * radius)' K! W; u- n' p x1 N w `9 z
p.y = ycenter - int(math.sin(rads) * radius * AspectRatio)* K, L1 c. M# t. x9 P+ Y
angle += step
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points.append(p)# |- f# _. i& J( q6 I
canvas.create_oval(xcenter - radius,ycenter - radius,& T5 G a4 S, u; D
xcenter + radius,ycenter + radius)
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for i in range(MAXPTS):
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for j in range(i,MAXPTS):
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canvas.create_line(points[i].x,points[i].y,points[j].x,points[j].y)
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canvas.pack(); h8 D# E* {, w1 O- C0 b: F
mainloop()' w" y) U+ h4 D! [( V
if __name__ == '__main__':
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LineToDemo()

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[题库] 7925 - [B]实例065：画组合图形

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