HI Sonya,
On 18 July 2014 07:51, Sonya Blade <[email protected]> wrote: > I figured out that part, there was a scale difference with main model if I > scale it up to > 25 times in each direction then model is visible. But still it is vague > how we can setup the > hud camera viewing direction or up vector, I'll appreciate your guidance > on that. > The Camera's View matrix defines the up vector. Have a look at online documentation on OpenGL modelview matrices/gluLookAt for more info - the OSG just sets and passes on the modelview matrix so all these OpenGL are relevant. > > Along with that I'd like to know whether it's possible to assign the > manipulator to the > hud camera if so how can I do it, but preferably I want only the rotation > and zooming > and not the paning ? > If you HUD is managed via a View then you'll be able to assign a CameraManipulator to the View to control it. However, all of the osgGA manupulators are designed around a perspective view rather than an orthographic and will not be directly usable for an orthographic view that has very specific needs and constraints. I would recommend either writing your own CameraManipiulator for the task or to not use a CameraManipulator and just assign the HUD Camera's View matrix directly in your own code. Robert.
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