Hi,
sorry, I can only guess at potential problems...
I am assuming you are viewing the data with osgviewer so that I can
discard other cases where blending might not be set up correctly.
The black portions normally indicate that something is up with the
blending of data. E.g. sometimes the geotiffs have transparent areas
that have to be blended with other tiles. This occurs e.g. when the
tiles are not square. Since the dted data has no colour data, I'm not
sure what the image data will blend with.
What I would try is to use one of the BMNG tiles as a backdrop. See on
the wiki for a link. The BMNG tile covers a wide area and would be used
for places in the terrain where you do not supply your own higher res
image data.
jp
Greg Myers wrote:
I have another question for you JP. I have been playing with the osgdem
tool and trying to create a terrain database with some aerial photos (
geotiffs ). After my database is generated using the command:
Osgdem --geocentric --terrain -d DTED -t image.tif -l 4 -o test\test.ive
I get something that looks about right except that the terrain around the
image is blacked out. More area is blacked out when I'm viewing the higher
layers. I'm attaching a small image so that you can see what I'm talking
about. If you look near the top left corner of the black area you can
barely make out my tiny little geotiff image. When I zoom out the black
area becomes larger. When I zoom in it becomes smaller but never goes
completely away. It seems that whichever tile ( I think that's the right
term ) the image is located in is blacked out everywhere except where the
image is. Is it not possible to use images that only cover a portion of
your terrain or am I just missing some command line arguments or something?
Thanks
Greg
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of J.P.
Delport
Sent: Monday, July 28, 2008 11:49 PM
To: OpenSceneGraph Users
Subject: Re: [osg-users] vpb on cluster example
Hi,
Greg Myers wrote:
Hi JP,
I'm new and I'm a little fuzzy on the versioning between VPB and OSG.
It looks like for the example you have provided, we need an older
version (2.3.6) of OSG. Do you know if there are plans to upgrade VPB
to work with the latest releases of OSG or am I totally missing
something?
Thanks for any info.
Greg
sorry, I should have made the versions I used more explicit. For the
example I used OSG and VPB from svn around June.
osgversion says 2.5.1.
svn info gives:
Revision: 8413 for OSG
and
Revision: 914 for VPB
I'll add the info to the example page.
regards
jp
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