Win32 - bad performance with maximized window

[Toni Cavalheiro]

Hello Olly,

I did more tests with different machines and found what is causing the
problem.

The cause is the resolution. The same IBM ThinkPad can manage .3D files in
1280x1024 perfectly, but the performance is really bad in 1400x1050 (this is
the standard resolution for this machine). I'm sure that the problem is not
the machine, once the old Survex version was running OK in all resolutions.

If you can check the problem, it would be great. If not, don't worry... this
is not a critical problem. :-)

Thanks.

Regards,
-Toni

-----Original Message-----
From: survex-bounces at survex.com [mailto:survex-bounces at survex.com] On Behalf
Of Toni Cavalheiro
Sent: Friday, September 09, 2005 3:04 PM
To: 'Olly Betts'
Cc: survex at survex.com
Subject: RE: Win32 - bad performance with maximized window

Hello Olly,

The same problem happen for the button in the title bar as the "Full Screen
Mode". When I'm adjusting the window size manually, the performance seems
OK. But, if I continue adjust the size, the Aven becomes very, very slow.
The strange fact is that there is no "medium" performance. Or the software
is running perfect, or is totally slow.

I've tested using different caves (small and big files) and the problem is
exactly the same.

I'm using Windows XP Professional SP2. BTW, I forgot an important thing.
This ThinkPad uses the resolution 1400 by 1050 pixels, 32 bit.

I'm leaving now for a weekend trip, but next Monday I will test the Aven in
another computer and inform you if the problem persists.

Have a nice weekend.

Best regards,
-Toni

-----Original Message-----
From: Olly Betts [mailto:olly at survex.com]
Sent: Thursday, September 08, 2005 8:04 PM
To: Toni Cavalheiro
Cc: survex at survex.com
Subject: Re: Win32 - bad performance with maximized window

On Thu, Sep 08, 2005 at 03:30:54PM -0300, Toni Cavalheiro wrote:
> I've tested the Survex 1.1.3 for Windows and found something very strange.
> When the Aven is maximized, the performance is really bad. It's so bad 
> that is impossible to use the rotation tool or the zoom in/out.
> 
> But... I just changed to the "windowed" mode and software is running 
> perfect. I don't know what is happening, but there is a big difference 
> in use the maximized window. Any suggestion?

Maximised with the button in the title bar, or with "Full Screen Mode"?

I can't really think what in Aven's code could cause this.  The only thing
which even vaguely seems plausible is the timing code which adjusts speed of
animation to the speed of the machine.  But (a) that should work the other
way and (b) it's not used for zooming in and out (only animating rotation,
plan/elevation transitions, and the presentation stuff).

I wonder if it's an issue with the window size going past some threshold
which is more than the hardware can comfortably handle.

If you just drag the window bigger, can you get the same problem without it
actually being maximised?

Does it happen with both maximising using the title bar button, and with
"Full Screen Mode"?

> The computer is a IBM Thinkpad, Pentium 4, CPU 2.20GHz, 512MB of RAM.

What version of Windows?

Cheers,
    Olly


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