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:9 G/ w3 _9 t/ Z2 S; B, ~9 j
def __init__(self):
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self.x = 0" W+ Y# ]3 \4 |5 \
self.y = 0
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points = []
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def LineToDemo():
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screenx = 4008 T& n% q5 x! L7 k1 N
screeny = 4003 [8 T$ x; a; a/ W% l
canvas = Canvas(width = screenx,height = screeny,bg = 'white')
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AspectRatio = 0.85# G0 N+ q; e1 s W1 v8 Q
MAXPTS = 154 `1 s8 o0 O3 L* C
h = screeny: b2 P# ]5 t @- N) j
w = screenx/ g9 q, O8 v' h1 k
xcenter = w / 2/ q3 H/ r0 D: c1 G+ e1 o0 R& c
ycenter = h / 24 p2 |# ^9 L: @) D( o
radius = (h - 30) / (AspectRatio * 2) - 20
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step = 360 / MAXPTS
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angle = 0.0 r, N/ E8 r; ]
for i in range(MAXPTS):. E5 ?2 v k8 h% C/ l" ^
rads = angle * math.pi / 180.0
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p = PTS()% S h. t7 `; z, O
p.x = xcenter + int(math.cos(rads) * radius)" [& x/ n* z, U; W
p.y = ycenter - int(math.sin(rads) * radius * AspectRatio)
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angle += step$ x6 ]0 r# a c5 f8 d4 L
points.append(p)3 Z) {6 h5 m/ u; J" @
canvas.create_oval(xcenter - radius,ycenter - radius,
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xcenter + radius,ycenter + radius)! ~( X" B o; ]: u) V- W% a
for i in range(MAXPTS):! `9 u$ |" ~+ s5 o& b4 x; x" O
for j in range(i,MAXPTS):2 @9 l6 h+ x4 g2 m
canvas.create_line(points[i].x,points[i].y,points[j].x,points[j].y)8 |+ v. A( z# c( a- I0 R# W
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canvas.pack()
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mainloop()$ B& V& s0 ~1 {3 y$ x2 q
if __name__ == '__main__':, q |' P5 H& A
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！