The methods provided in osgSim work for geocentric databases. Is your terrain built as a geocentric database?
If so, you can get the HAT/HOT with this... earth->convertLatLongHeightToXYZ(osg::DegreesToRadians(lat), osg::DegreesToRadians(lon), alt, X,Y,Z); hat = osgSim::HeightAboveTerrain::computeHeightAboveTerrain(terrain.get(), osg::Vec3d(X,Y,Z)); If you're a flat earth with lat/lon only, then what you've got is probably fine... -Shayne -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Zeki Yugnak Sent: Thursday, April 18, 2013 7:15 AM To: [email protected] Subject: [osg-users] Height of the terrain on a given lang/long Hi everyone, I am trying to calculate height value of the terrain on a given latitude and longitude. I am using a ive formatted terrain model that was converted using osgDem from Dted level-1 data. I searched a solution on whole osg forum and web but i could not find good one. Also I looked HeightAboveTerrain class and osgintersection sample but these class does not work only given a latitude and longitude values. I can get height on terrain with following code block, is it a good solution? Code: osg::PagedLOD* pLod = dynamic_cast<osg::PagedLOD*>(coordinateSystemNode->getChild(0)); osgTerrain::TerrainTile* pTopTile = dynamic_cast<osgTerrain::TerrainTile*>(pLod->getChild(0)); osgTerrain::HeightFieldLayer* pLayer = dynamic_cast<osgTerrain::HeightFieldLayer*>(pTopTile->getElevationLayer( )); pLayer->getInterpolatedValidValue( osg::DegreesToRadians(langVal), osg::DegreesToRadians(longVal), height ); Cheers, ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53687#53687 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
