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
