[osg-users] Using OsgSim Overlay

Vaibhav Bansal vaibhav at darshan3d.com
Thu Nov 19 01:27:22 PST 2009


Hello jp,

Thanks for the quick reply.
How do I check if the 'resolution' of ovelay geometry is changing.

Regards
Vaibhav Bansal

-----Original Message-----
From: osg-users-bounces at lists.openscenegraph.org
[mailto:osg-users-bounces at lists.openscenegraph.org] On Behalf Of J.P.
Delport
Sent: Thursday, November 19, 2009 2:41 PM
To: OpenSceneGraph Users
Subject: Re: [osg-users] Using OsgSim Overlay

Hi Vaibhav,

Vaibhav Bansal wrote:
> Hello,
>  
> I have added a geometry as an overlay over another geometry.
> The overlay texture seems to distort(stretch) under certain viewing
angles.
> It seems the projected texture is generating incorrect texture
coordinates.

The texture coordinates might be OK, but the resolution of your 
overlayed geometry might change in the generated overlayed texture. What 
happens in OBJECT_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY? Does the 
resolution/stretch stay the same?

jp

> 
> The white area is the overlaySubgraph geometry, and the colored area is
the
> Overlay Node (base) geometry.
> The overlay mode is VIEW_DEPENDENT_WITH_ORTHOGRAPHIC_PROJECTION.
> 
> Can anyone suggest where should I start troubleshooting.
> 
> Thanks
> Vaibhav Bansal
> 
> 
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