&mdash;  The x component of the normal
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">p_nY</span>:Number</code> &mdash;  The y component of the normal
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">p_nZ</span>:Number</code> &mdash;  The z component of the normal
   </td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cell