Hi Jason,
Thanks for your reply. However, it seems the default color option only
effects the color of the geometry when no textures are provided. I had a
look at the DataSet source code, and the default color is only used if
the stateset creation fails (which is where all the imagery is generated).
My problem is that the black areas appear in the textures themselves.
Julian.
Jason Beverage wrote:
Hi Julian,
There is a setDefaultColor method exposed in DataSet. If you are using
osgdem from the command line, pass in the --default_color r,g,b,a
option.
Jason
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Julian Looser
Sent: Wednesday, September 20, 2006 3:32 P
To: [email protected]
Subject: [osg-users] Black sections with osgdem
Hello,
I am using osgdem to generate terrains for a visualisation project. I
have a bunch of georefenced images and corresponding heightfields which
I divide into logical sections based on a map grid. Most of the time
each grid cell contains 12 images arranged 4x3. These cells generate
really well and look great. However, when the cell has some missing
tiles (this happens on the coastline where empty ocean isn't mapped) I
get black areas where there is missing data.
I have tried a few ways to get rid of these black areas.
I tried to generate each individual tile in cells where there was
missing data. The problem with this was that these tiles did not match
up seamlessly when placed next to my other tiles. (A single tile
generated to level 4 doesn't seem to match up with 12 generated to level
4).
I tried to write a pixel shader that would hide the black parts. This
sort of worked but not consistently well and seems a nasty hack to me
anyway.
So, I was wondering if there is a proper way to achieve this. I would be
satisfied with being able to change the color from black to another
color (all my missing tiles are in the ocean, so a suitable blue would
be great). I looked in the osgTerrain::DataSet class to find where the
images are created but I'm not sure what to change.
Any help greatly appreciated,
Julian.
_______________________________________________
osg-users mailing list
[email protected]
http://openscenegraph.net/mailman/listinfo/osg-users
http://www.openscenegraph.org/
_______________________________________________
osg-users mailing list
[email protected]
http://openscenegraph.net/mailman/listinfo/osg-users
http://www.openscenegraph.org/
_______________________________________________
osg-users mailing list
[email protected]
http://openscenegraph.net/mailman/listinfo/osg-users
http://www.openscenegraph.org/
