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' o( l: R$ }( e# i2 C4 B; B, F
from tkinter import *9 x; j1 c& i5 x. J( O
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class PTS:
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def __init__(self):& i$ G" X ?; l% q) [3 B
self.x = 0
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self.y = 0
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points = []- R: d* e8 ^/ [0 G- d' _0 I
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def LineToDemo():
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screenx = 4000 F, ]) G: t+ W7 n/ L& A# ^' O) `
screeny = 400; p' D9 W. Q0 M2 V; w; Y
canvas = Canvas(width = screenx,height = screeny,bg = 'white')
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AspectRatio = 0.85, p3 b9 r5 X7 R/ {7 s0 S7 M
MAXPTS = 154 r! e }7 [4 T
h = screeny
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w = screenx
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xcenter = w / 2
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ycenter = h / 2
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radius = (h - 30) / (AspectRatio * 2) - 20. V' u! f% w t$ ?" h/ t/ A2 \
step = 360 / MAXPTS+ o3 J$ O! R7 w, z. O
angle = 0.06 ^/ i4 v- T7 u3 N/ s) c7 w
for i in range(MAXPTS):2 ?0 p7 H8 k/ ^, {5 y' j
rads = angle * math.pi / 180.0
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p = PTS(); ?- Y1 m9 N1 Q0 i6 o4 y4 A. q
p.x = xcenter + int(math.cos(rads) * radius)
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p.y = ycenter - int(math.sin(rads) * radius * AspectRatio)1 V3 Y1 y' P3 c* B
angle += step8 v' F1 n! Z) K; ^* N
points.append(p)2 k* l: v* Z# L+ B; V, ]! {: Q
canvas.create_oval(xcenter - radius,ycenter - radius," P: {6 E( K2 N/ s4 i
xcenter + radius,ycenter + radius)0 d: \5 U' T5 Z3 t- H
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()/ U( a. Y. d2 `
mainloop(); v% @5 @$ z3 J5 U+ E: W& t2 A+ G
if __name__ == '__main__':3 Z! w5 B* Z, ^% R4 a) d1 p0 |$ V. W
LineToDemo()

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[题库] 7925 - [B]实例065：画组合图形

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