Hi, Robert,
Thanks for your advise, it works now!
Minhong
2009-04-13
发件人： Robert Osfield
发送时间： 2009-04-07 22:37:47
收件人： OpenSceneGraph Users
抄送：
主题： Re: [osg-users] How to attach DEM/Texure/OSG Model to an earthmodel created
by VPB?
HI Minghong,
2009/4/7 minghongxie <[email protected]>
Hi Robert,
Thanks for your suggestion, but maybe I misleaded you to the wrong way.
Please let me re-organize my problems again.
I have built the earth model ( earth.osga ), the region model ( e.g.
Beijing.osga, which created by osgdem with img file and dem file), and the
object models (e.g. car.osg, plane.osg, ...). I want to load the three kinds of
models in one viewer, and locate the Beijing.osga and car.osg, plane.osg, etc.
in specifically position of the earth model (earth.osga) with Lon/Lat/Height
coordinate. How can I do it?
Positioning objects into the scene would simply be done with an
osg::MatrixTransform or an osg::PositionAtttitudeTransform, it's just then a
case of mapping the lat's and longs to the ECEF coords that the world model
will be in. The osg::ElliposoidModel, attached to the CoordianteSystemNode
decorating the earth model, has methods for going from lat/long,height to XYZ,
and also can provide the local normals.
Robert.
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