akio tanaka

<h1 id="2d">
<a class="header-anchor-link" href="#2d" aria-hidden="true"></a> 2D</h1>
<h2 id="%E3%83%AB%E3%83%BC%E3%83%97%E3%81%AE%E5%90%91%E3%81%8D%E5%88%A4%E5%AE%9A-(ccw-%2F-cw)">
<a class="header-anchor-link" href="#%E3%83%AB%E3%83%BC%E3%83%97%E3%81%AE%E5%90%91%E3%81%8D%E5%88%A4%E5%AE%9A-(ccw-%2F-cw)" aria-hidden="true"></a> ループの向き判定 (CCW / CW)</h2>
<ul>
<li><a href="https://www.hiramine.com/programming/graphics/2d_polygonloopwise.html" target="_blank" rel="nofollow noopener noreferrer">多角形のループの向き - hiramine.com</a></li>
</ul>
