Hi,
have a look at these two threads. I've done something similar to what I
think you are looking for, but had to add some functionality. Look for
the getDRC function.
http://article.gmane.org/gmane.comp.graphics.openscenegraph.user/19873/match=DRC
http://article.gmane.org/gmane.comp.graphics.
Hi Paul,
Thanks for the lookAt background, very useful.
> Yep, read the code. Look for something like "getCenter" in
> MatrixManipulator, that would be a good start.
>
I'm already going down that road. Trouble is MatrixManipulator doesn't
have getCenter(). TrackballManipulator does, and usin
> Presumably because getViewMatrixAsLookAt() doesn't do any
> magic, it just takes the Y axis (in this case) of the matrix
> as the view vector. This vector will be normalised (otherwise
> the camera would do funky things), so all it can do is
> subtract this unit vector from the eye position.
Jean-Sébastien Guay wrote:
> The eye point is as expected, but instead I get center = (0,-39,0).
Presumably because getViewMatrixAsLookAt() doesn't do any magic, it just takes
the Y axis (in this case) of the matrix as the view vector. This vector will be
normalised (otherwise the camera would
Hello,
A quick question about the camera view matrix.
I have a viewer which is close to the default osgviewer, with the
default camera manipulator. I can see that at startup, the camera is at,
say, (0,-40,0) (looking down the positive Y axis, with the +Z up
convention). I can also see that I a
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