Hi Dave,

same here. But it is ok, if I start with 4:3 window and maximize it when 
fg runs (my normal start procedure).

Maik

dave perry schrieb am 06.01.2008 05:08:
> Maik Justus wrote:
>   
>> Hi,
>> Maik Justus schrieb am 26.12.2007 20:38:
>>     
>>> Hi Syd,
>>>
>>> what's about an algorithm, which checks the ratio of the screen and 
>>> sets fow to 55 for 4:3 screens and 70 for 16:9 screens? (55 / 70 =  
>>> (4/3) / (16/9) )
>>>
>>> Maik
>>> P.S.:
>>> for non-physicists:
>>> (55 / 73,33333333333333333333333333333333333 =  (4/3) / (16/9) )
>>>
>>>   
>>>       
>> Meanwhile I have a new computer wit 16:9 screen and the same problem. 
>> I've modified the calculation in viewer.cxx as mentioned above. Syd, 
>> please check, if this would work for you. Then we can think about, how 
>> to implement that in a clean way (maybe we need an FG_SCALING_HEIGHT 
>> case?). The patch is for the osg-branch, but it works with the plib 
>> branch, too (maybe some lines offset).
>>
>>     
> Hi Maik,
>
> I have had a 16:9 flat pannel for some time.  For the first time in 
> several months, I built fgfs for osg from fresh svn and fresh cvs.  What 
> I noticed right away that has changed is that osg fgfs does not handle the
>  --geometry=1680x1050
> correctly anymore.  The height of the image is too small for the width.  
> The gages are not round.  The plib branch still handles this correctly.  
> Are you seeing what I am seeing or have I missed a patch?
>
> When I adjusted the width of the window until round objects are round 
> and then measure the aspect ratio of the adjusted window, the aspect 
> ratio is 4/3.
>
> Here is what comparing the plib to the osg response to changing the value of
> /sim/current-view/aspect-ratio-multiplier tells me:
>
> In plib, it adjusts the displayed aspect ratio.  I can get the same 
> distortion in plib fgfs as in osg fgfs by changing this value to ~1.2 
> instead of 1.  But if I try to "fix" the view in osg fgfs by adjusting 
> this value from 1 to 0.83333333, all it does is scale the distorted 
> image.  i.e. it is adjusting the effective fov, not the aspect ratio.
>
> - Dave Perry
>
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