Thank you Paul. I appreciate your response. What confuses me is that
TrackballManipulator seems to be defaulting to Y up and not z. I
believe the setHomePosition is very similar to the setViewMatrixLookAt
and I do not believe that either function call will properly set the Z
orientation for the scene. But I could be totally wrong. I've not
tried this yet.
However, I am trying to find the setCoordinateFrameCallback() function
and determine how to use it w/o having to subclass TrackballManipulator
if I can help it.
Thanks for the tips. I'll also see if I can find a
"getCoordinateFrame()" function to tell me what the up vector really is
in my scene.
Message: 9 Date: Fri, 14 Nov 2008 11:39:08 -0700 From: "Paul Martz"
<[EMAIL PROTECTED]> Subject: Re: [osg-users] Question: Does the
osgGA::TrackballManipulator re-orient the xyz axes to be y Up, and z
positive into the screen? To: "'OpenSceneGraph Users'"
<osg-users@lists.openscenegraph.org> Message-ID:
<[EMAIL PROTECTED]> Content-Type: text/plain;
charset="us-ascii" See the setCoordinateFrameCallback() and possible
the setHomePosition() methods. The TrackballManipulator defaults to z
up, but you can set it to be whatever you wish. -Paul
>
> Hi. Does anyone know if the osgGA::TrackballManipulator
> re-orient the xyz axes to be y Up, and z positive into the
> screen? Through the use of some sort of hidden projection?
> I can't find any documentation on this at all but when I get
> the manipulator's view matrix, pull out the translation
> vector and add to the Z value and finally put the rotation
> matrix & the updated translation vector back together, my
> scene moves up or down and NOT into or away from the scene.
> When I alter the Y value, I move into or away from the scene.
> X works as expected.
>
> This is very confusing for a newbie. Thx!!!
>
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