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 math1 q( V+ \9 U% p- V: K
from tkinter import *; r0 j+ N6 G$ V/ I; Z
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class PTS:4 w0 a0 w* K4 N% u, B' N, m* U
def __init__(self):: L% D5 W' ]: F1 w+ C
self.x = 0% Q/ G, I( |. j* K
self.y = 0
{, @% W& w6 F; k
points = [] ^3 s( o$ E* K- {: S+ Y5 [2 J
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def LineToDemo():
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screenx = 400
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screeny = 400
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canvas = Canvas(width = screenx,height = screeny,bg = 'white')9 T9 X2 O) y7 p1 @
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AspectRatio = 0.85+ C& d* m3 `3 X+ J4 ^
MAXPTS = 15$ k! ~7 q7 ]8 ^4 X2 F! r( E
h = screeny
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w = screenx4 U' W) V: q r G0 P: W& G
xcenter = w / 27 c7 u* ]" |; v. N% I
ycenter = h / 2
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radius = (h - 30) / (AspectRatio * 2) - 20% S: Y c# I) h. ^( r" ?- P
step = 360 / MAXPTS# D! Q e* Y8 \6 {
angle = 0.0
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for i in range(MAXPTS):
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rads = angle * math.pi / 180.0 P+ U! a& z6 u7 K8 h) L. ~. ~& q
p = PTS()
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p.x = xcenter + int(math.cos(rads) * radius)" j( r3 t) a0 S% D+ V$ f" s; c
p.y = ycenter - int(math.sin(rads) * radius * AspectRatio) H" X; d! v1 g# {! R% s
angle += step. w: G+ [& v* }/ L$ G
points.append(p)
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canvas.create_oval(xcenter - radius,ycenter - radius,6 O n* p1 l& H2 P; R3 d& o
xcenter + radius,ycenter + radius)
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for i in range(MAXPTS): P( p( C2 A& W) [- [% H' ]2 Y2 F; U
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()
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mainloop()# O, B0 i% K7 }
if __name__ == '__main__':$ [, A: [) l: @: t4 ?% b
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！