sed in a triangle defined by three vertices v0, v1 and v2, interpolate
 a z value from the surrounding vertices.</TD>
</TR>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/vividsolutions/jts/triangulate/quadedge/Vertex.html#isCCW(com.vividsolutions.jts.triangulate.quadedge.Vertex, com.vividsolutions.jts.triangulate.quadedge.Vertex)">isCCW</A></B>(<A HREF="../../../../../