lineno">   23</span>    PP_PT0 = 0,  <span class="comment">// point-triangle, the closest point is the point 0 in triangle</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span>    PP_PT1 = 1,  <span class="comment">// point-triangle, the closest point is the point 1 in triangle</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span>    PP_PT2 = 2,  <span class="comment">// point-triangle, the closest point is the point 2 i