On Thursday 20 May 2004 08:43, Chris Metzler wrote:
> Hi. I should probably be asking this in atlas-devel, but at first
> glance it looks pretty dead there; and I'm guessing someone here
> has encountered this, or can easily.
> I recently built Atlas from CVS (that took some work, but that's a
> different conversation). I then set about generating maps, using
> the philosophy outlined on the Atlas website -- some 1024x1024
> images for highres, and 64x64 images for lowres. See the bottom
> under "Map Resolutions." The maps generated fine; looking at the
> ..png's in an image viewer, they all look gorgeous. But using them
> in Atlas, I encounter trouble. As near as I can tell, Atlas is
> incapable of rendering 1024x1024 .png images. Here's what I find.
> 1. if image files for a location are not present, Atlas shows
> the airports and navaids on top of a light blue background (sensible,
> since the standard FlightGear assumption is that missing scenery is
> water). The same is true if the needed files are present, but are
> *not* .pngs (e.g. I just copy some random file in and give it an
> appropriate name, so that Atlas can try to load it and fail).
> 2. if the image files for a location *are* present, but are
> 1024x1024, Atlas shows an off-white background, with the airports/
> navaids on top of that.
> 3. if I zoom out until I cross the highres/lowres threshhold of
> 1:1000000, Atlas tells me it's moving to the low-resolution maps,
> and *bingo*, I have maps as a background.
> 4. if I regenerate the low-resolution maps at a higher resolution,
> I get the same result as #3, UP TO the low-resolution maps having
> a size of 512x512. If I make the low-resolution maps at 1024x1024,
> run Atlas, and zoom out to where the low-resolution maps should be
> used, I have an off-white background.
> So it seems that 1024x1024 files are the problem. Does anyone else
> see this with a current Atlas from CVS? Any suggestions on what I
> can do to fix this? Obviously since the webpage was written as it
> was, it was intended that making and using 1024x1024 .png files be
> possible. What can I do to make this work?
> Thanks for advice,
> P.S. Oddly, when *making* the 1024x1024 images, Map is able to
> display them just fine. It's only when Atlas tries to do so that
> problems occur.
I think it's always been like that - I've never been able to use 1024x1024
maps either. As you've found, 512x512 maps are ok, so I use that res.
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