[osg-users] Line tessellation with osgUtil::Tessellator

[Sebastian Messerschmidt]

Hi Valerian
> Ok thanks.
>
> One more question then if I can.
>
> My grid is textured and has elevation, and my goal is to nicely draw the line on my textured grid and make it follow the elevation. Resampling is what came first to my mind.
>
> There is also the osgSim::OverlayNode which seems to be useful too, but i would to keep my line width constant for any camera angle.
>
> So is the resampling a good option ? Is there any good technique I should try or investigate ?
Projective texturing from the eye-point aka. eyespace texture coordinate 
generation comes to my mind [0]
You can either use the TexGen node or do it in the vertex shader.


Cheers
Sebastian

[0] https://en.wikipedia.org/wiki/Projective_texture_mapping
>
> Thanks !
>
> Valerian
>
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> http://forum.openscenegraph.org/viewtopic.php?p=68115#68115
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