proj-imim:
Re: Smoothness and download speed
Ed Howard 2000-May-17 20:49:37
Helmut,
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I believe he is speaking of the subtle jumping (up down up down) that
happens when panning. It is only a pixel or 2 ....
>From my 04/20/00 Email
>when panning the ride seems a tad bouncy..../\/\/\/\/\/\/\/\/\/\/\/
Ed Howard
----- Original Message -----
From: Helmut Dersch <#removed#>
To: Paul Ellis <#removed#>; Immersive Imaging
<#removed#>
Sent: Wednesday, May 17, 2000 3:11 PM
Subject: Smoothness and download speed
> Paul Ellis wrote:
> >
> > I'm less concerned with absolute speed of panning than with _smoothness_
of
> > panning. QTVR is the Rolls-Royce here: very smooth and able to come to a
> > full stop, with the mouse down. The feedback I've had from my colleagues
> > concerning PTVJ centres mostly around smoothness of navigation
>
> I am not completely sure about what you mean by smoothness, but guess
> that it is the navigation response when moving the mouse. QTVR
> and LivePicture use a progressive function (initial mouse movement
> causes small panning speed, while larger movement increases
> speed more than proportional) whereas PTViewer uses a linear
> function. Also, this function is not scaled when zooming in,
> which makes moving somewhat difficult with small fov. I will add such a
> progressive, fov-dependent response in version 1.0.
>
> > and download
> > speed, especially in IE.
>
> I am puzzled by this. I have done several tests on Win98 and NT,
> and using Netscape 4-4.7 and IE 4-5, on dialup and local
> ethernet connections, and am getting exactly (within 10%) the same
> download speeds with all browsers. Also, PTViewer downloads slightly
> faster than the LivePicture versions.
>
> Regards
>
> Helmut Dersch
>