[osg-users] How to get current position of osgViewer camera

[Paul Leopard]

I want to query osgViewer to get the current camera position (Note: not the home position). As I move around in a scene I want to know the current coordinates of my eyepoint so that I can save it to a configuration file so that the next time I run my app I can read that position and set it as the home position.

How can I simply get the current eye position (same coordinate frame as the home position is specified in).

Thanks in advance,
Paul

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[Sergey Polischuk]

Hi

check if getViewMatrixAsLookAt(...) on viewer camera is sufficient for your needs

Cheers.

22.08.2012, 22:21, "Paul Leopard" <paul.l...@gmail.com>:

[Paul Leopard]

Absolutely perfect.

Thanks so much!

Paul

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Read this topic online here:

http://forum.openscenegraph.org/viewtopic.php?p=49412#49412

[Rodrigo Dias]

I managed to do that inside the `handle` method:

    osg::Vec3d eyePos;
    osg::Matrix matrix = _viewer->getCameraManipulator()->getMatrix();
    eyePos = matrix.getTrans();
    lat = eyePos.y();
    lon = eyePos.x();
    alt = eyePos.z();