[Paraview] Rendering bug in ParaView-CVS

[Dominik Szczerba]

Well I am outputing loads of stuff from a transient solver and I need 
the data files in real scale as it gets used in other solvers (or as 
starting condition for the same run some time later). I am occupying 
already too much space and storing a duplicate only for visualization is 
  ruled out. Are people not using VTK for large scale visualizations of 
micro/nano structures?

Dominik

Michael Wild wrote:
> True, but you could write a small utility which directly operates on  
> your output data and scales it there... Better than this very  
> irritating behavior nothing.
> 
> Michael
> 
> On 14. Aug, 2009, at 15:09, Dominik Szczerba wrote:
> 
>> That's what I thought. PV and more specifically VTK probably  
>> hardcodes float representation. I once raised this issue with no  
>> resonance.
>> I think the single/double should be respected (visualization for  
>> micro/nano). Of course one can scale, but this slows things down for  
>> large transient datasets.
>>
>> - Dominik
>>
>> Michael Wild wrote:
>>> It actually the data set you gave me for testing the Ogg/Theora  
>>> stuff.  I just noticed that this only happens with your data set (I  
>>> do not  have such small stuff normally ;-))
>>> It really seems to be the size. If I scale with a factor of 35,   
>>> everything is fine. All smaller integer scaling factors result in  
>>> this  effect (more pronounced the smaller the factor).
>>> Michael
>>> On 14. Aug, 2009, at 14:36, Dominik Szczerba wrote:
>>>> Can you post your dataset for a test?
>>>>
>>>> I have observed a similar problems with whole actors disappearing   
>>>> (the same way, as if gradually cut by something) for very small   
>>>> datasets. I suspect this may have to do with single precision   
>>>> accuracy somewhere.
>>>>
>>>> - Dominik
>>>>
>>>>
>>>> Michael Wild wrote:
>>>>> Hi all
>>>>> In current CVS there seems to be a rendering problem with the    
>>>>> crosshairs displayed at the rotation centre. Whenever the x-y  
>>>>> plane  is  becoming close to normal to the view-vector (i.e.  
>>>>> parallel to  the  camera-plane), these markers simply disappear.  
>>>>> Funny thing is,  they  seem to be gradually "cut off" from left  
>>>>> to right (or right  to left,  depending on which way x-y is  
>>>>> tilted).
>>>>> To illustrate the problem, I created a small animation which   
>>>>> sweeps  the camera from left to right: https://www.ifd.mavt.ethz.ch/people/wild/personal/files/sweep.mp4
>>>>> - The first frame shows the partially cut-off crosshairs
>>>>> - As the x-y plane becomes close to parallel with the view- 
>>>>> plane,  it  completely disappears
>>>>> - Towards the end, the crosshairs gradually appear again
>>>>> I see this problem both on Mac OS X 10.5.7 and OpenSUSE 10.3.
>>>>> Am I the only one with this issue?
>>>>> Michael
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>>>> -- 
>>>> d o m i n i k   s z c z e r b a ,   p h d . . . . . . . . . . .
>>>> c o m p u t a t i o n a l   l i f e   s c i e n c e   g r o u p
>>>> . . . . . . . i t ' i s   r e s e a r c h   f o u n d a t i o n
>>>> . . . . . . . . . . . . . . . . . . . . http://www.itis.ethz.ch
>>>>
>>
>> -- 
>> d o m i n i k   s z c z e r b a ,   p h d . . . . . . . . . . .
>> c o m p u t a t i o n a l   l i f e   s c i e n c e   g r o u p
>> . . . . . . . i t ' i s   r e s e a r c h   f o u n d a t i o n
>> . . . . . . . . . . . . . . . . . . . . http://www.itis.ethz.ch
>>
> 


-- 
d o m i n i k   s z c z e r b a ,   p h d . . . . . . . . . . .
c o m p u t a t i o n a l   l i f e   s c i e n c e   g r o u p
. . . . . . . i t ' i s   r e s e a r c h   f o u n d a t i o n
. . . . . . . . . . . . . . . . . . . . http://www.itis.ethz.ch