OMPACT>
<DT> 
<DD> 
A normal vector <EM>normalvec</EM> is converted to its homogenous representation.
</DD>
</DL>
<BR>
<BR>

<P>

<A NAME="27203"></A>
<B>midpoint</B> <EM>p p1 p2 &amp;optional result </EM>[function]

<DL COMPACT>
<DT> 
<DD> 
<EM>P</EM> is float, and <EM>p1</EM> and <EM>p2</EM> are float-vectors of the same
dimension.
A point <!-- MATH
 $(1-p) p1 + p p2$
 -->
<SPAN CLASS="MATH"><IMG
 WIDTH="112" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
 SRC="manual-img49.png"
 ALT="$(1-p) p1 + p p2$"></SPAN>, w