[osg-users] camera attached to a node

santosh santosh at darshan3d.com
Fri Oct 12 13:35:45 PDT 2007


Hi Philip
Did you tried osgGA::NodeTrackerManipulator. In this Manipulator you can 
attach a  Node  to which this manipulator follows and also by keeping 
key press  of that manipulators key bind you can rotate camera about 
that node .

---------
Santosh
+91 9999785853






Philip Hahn wrote:

> good afternoon-
>
>  I was looking at the NPS tutorials and it was mentioned in tutorial 
> 11.1 that a osgGA::TrackerManipulator can be used to attach a camera 
> to a node.
>
>  I tried this, (by attaching the TrackerManipulator to the node in 
> question, then manually setting my view matrix using the 
> TrackerManipulator's getMatrix() ) and while the camera follows the 
> path of my node through space as it moves (it is scripted), I don't 
> see my node. I did set a minimum following distance.
>
>  Could someone either point me to a tutorial or give me a quick 
> overview of how to a TrackerManipulator? Ultimately I'm trying to make 
> a camera I can orbit around a moving vehicle, keeping focus on the 
> vehicle (I presume some if not all of this functionality exists, I'm 
> just not seeing it ... ) . Right now I'm manually calculating it using 
> spherical coordinates, retrieving the position of my target node, and 
> using makeLookAt() to generate a matrix.
>
>  Thanks,
>
> Philip
>
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