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 *
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class PTS:5 ?1 H- H: h0 s
def __init__(self):
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self.x = 0
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self.y = 0
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points = []
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def LineToDemo():
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screenx = 400# |) b3 |8 J$ `% ~
screeny = 400% `: s# O8 T8 J. G$ e
canvas = Canvas(width = screenx,height = screeny,bg = 'white')
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AspectRatio = 0.85# ?% s+ T* |) J# d: Y2 r9 G
MAXPTS = 15. _. ]; P/ ^, ^" [! \
h = screeny6 L. O& q. z9 R N7 D
w = screenx4 J9 m6 i! O4 U' H8 |" c) u% g- j* R
xcenter = w / 2
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ycenter = h / 2
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radius = (h - 30) / (AspectRatio * 2) - 20
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step = 360 / MAXPTS/ P, i5 O8 E5 A* o
angle = 0.07 y! J8 u! H$ z
for i in range(MAXPTS):2 o! u0 F8 f4 P2 g! Z2 p) [
rads = angle * math.pi / 180.0
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p = PTS()( q/ C. y1 Q: d
p.x = xcenter + int(math.cos(rads) * radius)
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p.y = ycenter - int(math.sin(rads) * radius * AspectRatio)
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angle += step9 f: p/ Z6 e0 J" x
points.append(p)
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canvas.create_oval(xcenter - radius,ycenter - radius,; i9 I; H: m1 D" D9 m8 j, d7 H
xcenter + radius,ycenter + radius)4 i& x5 t" M5 {+ l. F2 x; I
for i in range(MAXPTS):+ W! b1 a9 `& q+ f: k
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)6 ~. ?( U9 ~. O1 V
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canvas.pack()
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mainloop()
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if __name__ == '__main__':; d9 f0 i0 T0 M! T- _1 d, e
LineToDemo()

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[题库] 7925 - [B]实例065：画组合图形

马上注册，结交更多好友，享用更多功能，让你轻松玩转新大榭论坛！