    }</div>
<div class="line"> </div>
<div class="line">    <span class="keywordflow">return</span> tuple&lt;double, Vec3d, Vec3d&gt;(cnt_len_n, cnt_dir_n, cnt_pos);</div>
<div class="line">  }</div>
<div class="line">};</div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">void</span> DemoErosionIssue() {</div>
<div class="line">  <a id="_a2" name="_a2"></a><a class="code hl_class" href="classnetdem_1_1_ellipsoid.html">Ellipsoid</a> ellipsoid = <a class="code hl_class" href="classnetd