On Mon, Jan 21, 2013 at 6:44 AM, Daniel Limberger <daniel.limber...@hpi.uni-<daniel.limber...@hpi.uni-potsdam.de> > > > gwaldron wrote: > > Looks great. Does it work with geocentric terrain? > > I'm not sure if i understand your question correct. osgHimmel makes no > assumptions of the node or terrain type it is used with, except that the > provided altitude should be within the atmosphere or is at ground level > (for now, i plan to change this). It further needs date, time, longitude, > and latitude. >
What I mean is: most terrain models (like those created by VPB or osgEarth) operate is either flat/projected mode (the +Z axis always points up away from the ground) or in geoentric/ECEF mode (the +Z axis points through the north pole), and the origin is at the center of the Earth. The old osgEphemeris library only worked in flat projected mode because it assumed +Z was up. Just wondering whether your SDK makes the same assumption, or whether you are rendering a celestial sphere. If the latter, I would be interested in the potential for integrating your SDK with osgEarth. Glenn Waldron / @glennwaldron / osgEarth.org
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