I am using a new approach now..
I am creating all of the tiles in offline mode and save it on disk, and then
use those tiles in the runtime. The runtime performance became amazingly good...
But the process of building tiles takes relatively long time. Although it is
acceptable since it is done only once. but I think it could be dramatically
reduced...
The source code and discussion about it can be access here
http://forum.worldwindcentral.com/showthread.php?t=16651&page=3
it is a multi-threaded queue based tile builder, it gave me the following
results:
total number of tiles: 760
tile size: 512x512
number of threads: 5
time: 1224203 ms (about 20 minute)
total size of tiles: 38.2 MB
I don't know it this is an acceptable timing... I looking for you suggestions
and comments
Please note: I am using gt-2.3.... gt-2.5 gave less performance for me...
--- On Mon, 3/24/08, Jody Garnett <[email protected]> wrote:
From: Jody Garnett <[email protected]>
Subject: Re: [Geotools-gt2-users] WWJ integration
To: "Ahmad Al-Obaidy" <[email protected]>
Cc: [email protected]
Date: Monday, March 24, 2008, 12:32 AM
I wrote the geotools tile module; it makes the WW servers available as a series
a Colleciton<GridCoverage> which can be used with the streaming renderer. I
implemented a queue for requests and a really simple in memory cache; you can
see the results in my community module for uDig.
> I working to integrate geotools with WWJ (open source Google earth written in
> Java)
>
> you can read about the integration in this thread
> http://forum.worldwindcentral.com/showthread.php?t=16651
>
> Currently, I am using StreamingRenderer, but I think I should switch to
> something else.
> The renderer should be thread-safe and give performance advantages for
> subsequent paint calls.
>
> what is your recommendations?
>
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