Re: [osg-users] Performing zooming and other navigations on geocentricvirtual earch?

2009-03-24 Thread Paul Martz
(Posting this for about the 1000th time...) 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

Re: [osg-users] Performing zooming and other navigations on geocentricvirtual earch?

2009-03-24 Thread Paul Melis
Paul Martz wrote: (Posting this for about the 1000th time...) 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,

Re: [osg-users] Performing zooming and other navigations on geocentricvirtual earch?

2009-03-24 Thread Paul Martz
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*

Re: [osg-users] Performing zooming and other navigations on geocentricvirtual earch?

2009-03-24 Thread Paul Melis
Paul Martz wrote: 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.

Re: [osg-users] Performing zooming and other navigations on geocentricvirtual earch?

2009-03-24 Thread Paul Martz
Sorry for yapping about this, I'm having a bad day (and can't really figure out what is the real issue in my head...) It takes two to argue, so I apologize for yapping back. Hope your day goes better from here on out. Paul Martz Skew Matrix Software LLC http://www.skew-matrix.com +1 303 859