proportional panning

[Xavier Bestel]

On Mon, 2009-06-08 at 17:46 +0200, Matthias Hopf wrote:
> On May 23, 09 19:24:31 +0100, David De La Harpe Golden wrote:
> > But it's "border-push" type panning. That means to scroll new sections
> > of the display into view you "push" against the border. Back in the
> > day, some amiga stuff instead used "proportional" panning to move the
> > viewport about the screen. Why would you want this?  "Pushing" against
> > a border means you need to push beyond where you want to click on to
> > bring whatever it is fully on-screen, then move back.  With the
> > proportional way, every viewport pointer position corresponds to a
> > particular point on the panning area. It allows rapid scrolling about
> > large panning areas, at cost of some precision.
> 
> Yes, you're right - I forgot how it was on the Amiga. Shame on me.
> You're more than welcome to add this to the panning code.

Why not making the proportional mode simply replace the push mode ?
Why keeping an allegedly inferior panning mode ?

	Xav