Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/IWORKS|Preferences">Preferences</a><hr>
<H4>Compact Vectors</H4>
The CompactVectors preference can be used to request that ImageWorks store
vectors in a more compact form in memory than is the default.  However,
this imposes a price on redraw performance.  The CompactVectors preference
can have the following values:
<P>
<UL>
<LI> OFF: Use the default (memory intensive, but fast) in memory storage form
for vectors.
<LI> ON: Use a compact form to store the vectors in memory that is slower but
doesn't lose any information.
<LI> 2D: Use the compact (ON) format, and don't bother storing a Z coordinate
for any of the vertices.
<LI> Float: Use the compact (ON) format, and don't keep full double precision
(8 byte binary numbers) accuracy for vector points.  Instead use
floats (4 byte binary numbers) imposing a modest penalty in speed
and accuracy in order to save more memory.
<LI> 2D Float: Apply both the 2D and Float options at the same time.
</UL>
The CompactVectors preference can be set, or overridden with an environment
variable called CompactVectors.  The value of the environment has the same
interpretation as the preference.<p>
Example:
<P>
<PRE>
 CompactVectors: ON
</PRE>
<hr>
Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/IWORKS|Preferences">Preferences</a><br>
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