Hello,
at first - You can compile 32bit version on 64bit machine (if it's
possible on Slackware).

Second - once I took a look at code. It was not good, still I didn't
managed to find the root cause.
Fly mode is TCL/C hybrid.
TCL part is here:
http://trac.osgeo.org/grass/browser/grass/branches/develbranch_6/visualization/nviz/scripts
(flythrough.tcl)
Some support is located in nviz/src/ (togl_flythrough.c)
Main rendering is done by OGSF lib/ogsf

OGSF should be fine, problem is somewhere in nviz part. Probably in
C/TCL interaction.

Good luck.
If You need some help with coding, feel free to as at grass-dev ML. We
are short on resources and thys any help is wecomed.

Maris.


2010/6/15, Ken Kwasnicki <ken.kwasni...@gmail.com>:
> Hi Maris,
> Thanks for the reply!  Too bad. I guess I'll have to install on a 32bit
> system.  For what it's worth my system is Slackware 13.0 64bit and also
> Nvidia driver, so nothing really new to add to the bug report other than the
> variance in linux distribution.
>
> Any speculation where this bug might occur in the nviz code?  Just in case
> I'm feeling ambitious enough to take a crack at debugging it.
>
> Thanks,
> Ken
>
>
> On 06/15/2010 12:14 AM, Maris Nartiss wrote:
>>
>> Known issue, currently no fix.
>>
>> http://trac.osgeo.org/grass/ticket/46
>>
>> Maris.
>>
>>
>> 2010/6/14, Kwas <ken.kwasni...@gmail.com>:
>>
>>>
>>> Helo,
>>> I've used NVIZ in the past and not had this problem but after rebuilding
>>> Grass/Nviz for a new system (Slackware 13 64bit)  I now find when I try
>>> to
>>> "fly" to move the landscape it keeps resetting back to its originall
>>> position after a few frames.    ie: it will start to move in the
>>> direction
>>> of my mouse motion but then keeps jumping back so that I am unable to
>>> zoom
>>> in or position the view where I want.
>>>
>>> Has anybody seen this problem before or know what I should do to fix it?
>>> Appreciate any assistance.
>>> Thanks,
>>> Ken
>>> --
>>> View this message in context:
>>> http://osgeo-org.1803224.n2.nabble.com/NVIZ-help-fly-keeps-resetting-jumping-back-to-center-tp5178852p5178852.html
>>> Sent from the Grass - Users mailing list archive at Nabble.com.
>>> _______________________________________________
>>> grass-user mailing list
>>> grass-user@lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/grass-user
>>>
>>>
>>
>>
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