回答此问题可获得 20 贡献值,回答如果被采纳可获得 50 分。
<p>我有一个简单的例子(<a href="http://pastie.org/3732822" rel="nofollow noreferrer">SVG source</a>)看起来像你在下面看到的。<strong>d</strong>属性中描述的id为“<strong>rect2816</strong>”的路径</strong>:</p>
<pre><code>m 140.53571,188.625 0,148.1875 273.9375,0 0,-148.1875 -273.9375,0 z
m 132.25,42.03125 c 3.64586,0.0236 7.47296,0.12361 11.5,0.28125 36.65941,1.43507 57.84375,15.88072 57.84375,32.84375 0,7.41614 -1.94981,21.58652 -13.28125,24.09375 -14.58711,3.2276 -40.46224,-5.35276 -53.125,6.625 -26.65285,25.21104 -48.00843,-19.04537 -57.875,-32.84375 -12.16196,-17.00847 0.24962,-31.35357 54.9375,-31 z
</code></pre>
<p>这里,第一行描述的是父多边形,第二行是洞(如您所见)。但是我怎么才能找到这个洞程序的方法呢?我用的是Python。也许有一些图书馆可以轻松解决?在</p>
<p><img src="https://i.stack.imgur.com/vUOWI.png" alt="A polygon inside other polygon"/></p>