Hi Andrew, I would not recommend trying to make an orthographic view behave like a perspective view, it simple doesn't work (this is not an OSG issue, but the basic principles involved.) I've written about this before so I won't waste my key presses have a look through the archives.
The upshot is I would suggest keeping orthographic views for fixed maps/side/front views, or very constrained user interaction models. If you try to make a orthographic behave like a perspective you'll just waste lots of time. Robert. On Thu, Jul 30, 2009 at 6:22 PM, Andrew Thompson<andyb1...@yahoo.co.uk> wrote: > Hi there, > > I am using a custom CameraManipulator class (inheriting > osgGA::MatrixManipulator) which is added to my scene after the OpenSceneGraph > is initialised > > The CameraManipulator has two member variables I've added, a Vec3d target and > position. These are used to create a projection matrix by calling > Matrix::makeLookAt. As the events are handled by the manipulator, I am > updating the position/target and recomputing the matrix, then on Frame I am > returning the constructed matrix. > > This provides a great perspective view, however I cannot work out how to > construct an orthogonal projection using a target/position. > > In addition, I'd like to be able to change the Field Of View when I create > the matrix. > > I realise there is a Matrix::makeOrtho and Matrix::makePerspective, however > I'm not sure how to use these with my CameraLocation/Target variables. > > Could anyone offer me some advice? > > Thank you! > Andrew > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=15659#15659 > > > > > > _______________________________________________ > 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
