[Xastir] MapDrawing

[Curt Mills, WE7U]

On Fri, 25 Jul 2003, Tom Robson wrote:

> Thanks a bunch for the map drawing improvements with shapefiles.  I have a
> huge file (50 meg) which I have never used because it was so slow in loading
> it was painful.  Now it loads in about 8 seconds and is completely usable for
> me.  Not too sure when this improvement was made, but it sure works neat.
>
> Fantabulous...

Smoke and mirrors.

I don't recall that we did anything in particular with regard to
speeding up Shapefiles.  Oh wait, there was a tweak having to do
with rivers/streams and only showing the smaller ones at the
close-in zoom levels.  That might have been it.

The other map improvements have mostly been w.r.t. interrupting the
current map draw with more commands, like pan/zoom/Map Disable.  Try
zoom-in/zoom-in/zoom-in/zoom-out quickly and the maps should draw
once.  If you wait longer between keystrokes, it should write to the
screen whatever it managed to get drawn before the map interrupt.

-- 
Curt Mills, WE7U                    hacker_NO_SPAM_ at tc.fluke.com
Senior Methods Engineer/SysAdmin
"Lotto:    A tax on people who are bad at math!"
"Windows:  Microsoft's tax on computer illiterates!" -- WE7U
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