Thanks for the helpful hints. I think it's a great idea, that the new OSG release offers a "default" way how to deal with these projection transform changes.
2014-04-11 18:00 GMT+02:00 Rafa Gaitan <rafa.gai...@gmail.com>: > Oh! that's new! I need to upgrade now to osg-3.2 :) > > Rafa. > > > 2014-04-11 16:39 GMT+02:00 Robert Osfield <robert.osfi...@gmail.com>: > > HI Martin, >> >> The svn/trunk and OSG-3.2 versions of the OSG have a >> CameraManipulator::updateCamera(Camera&) method that by default just >> sets the Camera's ViewMatrix, but you can modify other parameters in >> your CameraManipulator subclass. >> >> Robert. >> >> On 9 April 2014 15:41, Martin Siggel <martinsiggel+...@gmail.com> wrote: >> > Hi, >> > >> > we'd like to implement our own camera manipulator class in order to have >> > more control of the projection matrix. >> > >> > What we want to implement is e.g. a zooming function in othografic >> > projection. >> > This can only be done by adjusting the FOV of the ortho frustum. >> > >> > Also, we would like to implement a "Grab" panning, where a object >> maintains >> > under the cursor, while panning the scene (as known from several 2D >> > programs). Here again, the projection matrix has to be known inside the >> > camera manipulator in order to sync mouse movements with the appropriate >> > movements in world coordinates. >> > >> > What we don't know, how to implement this correctly, since the >> projection >> > matrix is updated somewhere automatically by the values of the >> Manipulator >> > (position, look-at, up-direction ...) >> > >> > Do you have some advice? >> > >> > Cheery, >> > Martin >> > >> > >> > >> > _______________________________________________ >> > osg-users mailing list >> > osg-users@lists.openscenegraph.org >> > >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> > >> _______________________________________________ >> osg-users mailing list >> osg-users@lists.openscenegraph.org >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> > > > > -- > Rafael Gaitán Linares > CTO at Mirage Technologies S.L - http://www.mirage-tech.com > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > >
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