I need to change my chnnel or camera view for an upper view
i tried to to use :
osg::Matrix lookAt;
lookAt.makeLookAt(osg::Vec3(0.0f, 0.0f, 0.0f), osg::Vec3(0.0f, 0.0f, 0.0f),
osg::Vec3(0.0f, 0.0f, 0.0f));
viewer.getCamera()->setViewMatrix(lookAt);
but the program crashed
i tried to use :
viewer.setCameraManipulator(new osgGA::TrackballManipulator());
viewer.getCameraManipulator()->setHomePosition(osg::Vec3d(0.0,-5.0,0.0),osg::Vec3d(0.0,0.0,0.0),osg::Vec3d(0.0,0.0,1.0));
but nothing happened
can any one help me ??
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