[Paraview] Surface representation inconsistency

[Den Fairol]

Yeah, that 3-step process saves the day! No problem executing the 'Clean'
filter on ParaView 4.1.0 stable version. However, the texture map is abit
off. Could I tweak the transformation process so much so that the texture
coordinates are retained?

 

Thanks and Regards,

Den

 

From: Moreland, Kenneth [mailto:kmorel at sandia.gov] 
Sent: 18 March 2014 10:47 PM
To: Den Fairol
Cc: paraview at paraview.org
Subject: Re: [Paraview] Surface representation inconsistency

 

If Generate Surface Normals is not creating smooth normals by default, it
probably means that your mesh is a polygon soup. That is, the points in your
mesh are repeated and the connections of adjacent polygons is missing. If
this is the case, the Generate Surface Normals can't find the curve of the
surface and instead just finds the normal of the attached polygon.

 

If this is the case, you can solve the problem by merging coincident points.
Normally you do that with the "Clean" filter. Unfortunately, I notice that
the Clean filter is crashing my version of ParaView (I've raised a bug for
that, too). If that happens to you, you can instead run the "Clean to Grid"
filter and then "Extract Surface" filter. After your data is cleaned, run
Generate Surface Normals.

 

-Ken

 

From: Den Fairol <den.fairol at infovalley.net.my>
Date: Monday, March 17, 2014 8:25 PM
To: Kenneth Moreland <kmorel at sandia.gov>
Cc: "paraview at paraview.org" <paraview at paraview.org>
Subject: [EXTERNAL] RE: [Paraview] Surface representation inconsistency

 

Ken,

 

It turns out the bug is only prevalent in ParaView, no such issue in
ParaViewWeb which the platform of interest.  Thanks for the heads up though.

Oddly enough, the "Generate Surface Normals" 'trick' only works during
interaction. Pixelation returns when I stop moving the object around. Do I
need to change the default settings for that filter?

 

Regards,

Den

 

From: Moreland, Kenneth [mailto:kmorel at sandia.gov] 
Sent: 17 March 2014 11:45 PM
To: Den Fairol; paraview at paraview.org
Subject: Re: [Paraview] Surface representation inconsistency

 

Den,

 

The first issue appears to be a bug. I've submitted a bug report:
http://www.paraview.org/Bug/view.php?id=14638. You should be able to work
around the problem by making some other superficial change to the data or
display. For example, changing the color should do the trick.

 

The second issue is probably because you don't have surface normals. Try
running the "Generate Surface Normals" filter on your data.

 

-Ken

 

From: Den Fairol <den.fairol at infovalley.net.my>
Date: Sunday, March 16, 2014 6:06 PM
To: "paraview at paraview.org" <paraview at paraview.org>
Subject: [EXTERNAL] [Paraview] Surface representation inconsistency

 

Hi guys,

 

I have two issues when trying to display a surface representation: 

1.       Inconsistent rendered images between still and interactive as shown
in the first two pictures. It should be showing the muscle blockset during
interaction instead of the skeletal blockset. It appears that last known
render is still presiding in the memory during interaction. How can I flush
it?

2.       Inconsistent lighting effect on different objects as depicted in
the last image. Changing from Flat to Gouraud does not affecting the left
side object, it still would apply Flat lighting, which in turn causing it to
appear pixelated.  How do I remedy this?

 

Regards,

Den

 



 

 



 

 

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