"><a id="l00017" name="l00017"></a><span class="lineno">   17</span>    PP_PE1 = 1,  <span class="comment">// point-edge, the shortest distance is the distance between the point and the point 1 in edge</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span>    PE = 2,  <span class="comment">// point-edge, the shortest distance is the distance between the point and some point on the edge</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lin