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I am trying to add latitude/longitude lines to the
earth. I ran osgdem –bluemarble-west –t
land_shallow_topo_west.tif –bluemarble-east –t land_shallow_topo_east.tif
--geocentric –l 12 –o model.ive to build my model of the
earth. I have tried taking pieces from the osggeometry and osgsimulation
examples to get lines on the earth without any success. Could I draw a
bunch of line segments the just wrap around the earth, if so, some guidance in
this area would be appreciated. Right now I am getting some lines on the
screen, but I used the osgtext example and took out the text stuff and put some
line drawing (as in osggeometry) in there, but I would to be able to pick two
geo points(lat/long) and draw a line between them without the line going
through the earth. Any help with attaching lines to the earth, so that
they curve around the earth and are also attached to it as I rotate would be
appreciated. Thanks in advance. |
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