> > Zooming merely changes the field of view without changing the view position. > > Think of a photographer changing lenses on a camera without changing > > his physical location. You change the projection matrix to change the > > field of view, not the modelview matrix. > > > But that's *your* definition of zooming...
No, it's the computer graphics industry definition of "zoom", as defined by Foley and Van Dam, the Real-Time Rendering book, and the OpenGL red book. It's a word that has its root in photography, which shares the same definition. Zooming magnifies an image; it does not affect the view position. Words mean things. Programming is a very precise activity and we should select our words carefully when describing what we are trying to do. I would be doing the OP a disservice if I did not correct his usage and inform him. Paul Martz Skew Matrix Software LLC http://www.skew-matrix.com +1 303 859 9466 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
