[osg-users] setProjectionMatrixAsPerspective changes eyepoint when camera is rotated

[Mike Greene]

Hi,

I am trying to manually effect near and far clipping planes based on camera altitude in my app. Essentially, I do this:

Camera()->getProjectionMatrixAsPerspective(_fov,_ratio,_near,_far);

Then based on some criteria, I might change the near or far clip planes.

_near = _nearNew;
_far - _farNew;

I then try to reset using 

Camera()->setProjectionMatrixAsPerspective(_fov,_ratio,_nearNew,_farNew);

which works fine IF the original camera is not rotated, However, if the camera is rotated by, say , 90 degrees, prior to the calls, then the view after the get/set combo moves the eyepoint down by a factor equal to the aspect ratio of the screen.

Thank you!

Cheers,
Mike

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