Does your terrain display correctly in osgviewer? Make sure elevation data
exists for the given lat lon...
Shayne
Sent via the Samsung Galaxy S7 active, an AT&T 4G LTE smartphone
-------- Original message --------From: Siyamak Mohammadinejad
<smplif...@gmail.com> Date: 12/28/17 5:25 AM (GMT-07:00) To:
osg-users@lists.openscenegraph.org Subject: [osg-users] How to get height above
terrain in lat/long location?
Hi,
I have problem to get height above terrain with this code:
Code:
double X;
double Y;
double Z;
double maxElevationInDatabase = 8848; // meters, Mount Everest
osgTerrain::Terrain* t = dynamic_cast<osgTerrain::Terrain*>(terrainNode_.get());
osg::CoordinateSystemNode* csn = dynamic_cast<osg::CoordinateSystemNode*>(t);
osg::EllipsoidModel* em = csn ? csn->getEllipsoidModel() : 0;
if (em)
{
em->convertLatLongHeightToXYZ(osg::DegreesToRadians(lattitude),
osg::DegreesToRadians(longitude), maxElevationInDatabase, X, Y, Z);
hat = osgSim::HeightAboveTerrain::computeHeightAboveTerrain(terrainNode_.get(),
osg::Vec3d(X, Y, Z));
hot = maxElevationInDatabase - hat;
}
hat is always 8848 :(
My code to generate terrain is:
Code:
osgdem --bluemarble-west -t land_shallow_topo_west.tif --bluemarble-east -t
land_shallow_topo_east.tif -d SRTM_1arc-sec.tif --geocentric --HEIGHT_FIELD
--LOD --POLYGONAL --PagedLOD --TERRAIN -v 5 -l 10 -o earth.ive
Thank you!
Cheers,
Siyamak[/code]
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=72646#72646
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