Elevation layer

Hi community!

I use an elevation layer with <elevation/> in an earth file so that i can use the SDK method "oe_terrain_getElevation" for a specific purpose.
But i don't want the terrain to be extruted according to the elevation (I want it always at the 0 altitude).
How can i achieve this?

Thanks,
Jérôme.

Jérôme,

You can disable this using a define on a StateSet in your code.

For a specific layer:

layer->getOrCreateStateSet()->setDefine(
    "OE_TERRAIN_RENDER_ELEVATION",
    osg::StateAttribute::OFF);

For the whole map, you need an override:

mapNode->getOrCreateStateSet()->setDefine(
    "OE_TERRAIN_RENDER_ELEVATION",
    osg::StateAttribute::OFF | osg::StateAttribute::OVERRIDE);

Hope this helps.

Thank you!

It seems it is only for REX engine. Is there something similar for MP?

No.

hi,I used this method, but the results were not very good.When I zoom in at high altitude area:

beyond wrote

hi,I used this method, but the results were not very good.When I zoom in at high altitude area:

hi,anyone have any ideas?thanks.

What are we looking at?
Can you post an earth file?
Please provide details.

I need to use the SDK method "oe_terrain_getElevation" for for a specific purpose so I need to add elevationLayer,but i don't want the terrain to be extruted according to the elevation (I want it always at the 0 altitude).

So I call "mapNode->getOrCreateStateSet()->setDefine( "OE_TERRAIN_RENDER_ELEVATION", osg::StateAttribute::OFF | osg::StateAttribute::OVERRIDE)",but that didn't work.

When I zoom the camera,it still enter the terrain. I want the surface of the earth to be smooth rather than 3D terrain effect.