nd the point 0 in edge b</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span>    PP_Ea0Eb1 = 1,  <span class="comment">// point-point, the shortest distance is the distance between the point 0 in edge a and the point 1 in edge b</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span>    PE_Ea0Eb0Eb1 = 2,  <span class="comment">// point-edge, the shortest distance is the distance between the point 0 in edge a and some poin