[Xastir] make radar images see-through?

[Tom Russo]

On Sat, Mar 15, 2008 at 08:55:21AM -0700, we recorded a bogon-computron collision of the <kf4lvz at yahoo.com> flavor, containing:
> > Sorry, but not particularly.  The TRANSPARENT
> > keyword indicates which
> > color is treated as transparent (e.g., we can see
> > through the stuff
> > that isn't precip on the radar).
> > 
> > Not sure if you're trying to draw attention to
> > GAMMA, but that just
> > affects the brightness, pretty much like the map
> > intensity did.
> 
> So you must be wanting to make all the data sort of
> translucent as if it were a sheet of colored plastic,
> right?  I don't think you're going to be able to
> accomplish that without doing a major rewrite of Xastir.

Yes, that's right.  What you're looking for is to be able to display
RGB with Alpha (RGBA), and xastir is only using RGB.  I'm pretty sure that 
it would be a big rewrite of the raster display code to do transparency
of this sort.  Would be nice, though.

-- 
Tom Russo    KM5VY   SAR502   DM64ux          http://www.swcp.com/~russo/
Tijeras, NM  QRPL#1592 K2#398  SOC#236 AHTB#1 http://kevan.org/brain.cgi?DDTNM
"And, isn't sanity really just a one-trick pony anyway? I mean all you get is
 one trick, rational thinking, but when you're good and crazy, oooh, oooh,
 oooh, the sky is the limit!"  --- The Tick