[Paraview-developers] FW: [EXTERNAL] [Paraview] Rendering problem with the Streamline Representation plugin

[Cory Quammen]

Hi,

Some more details about this representation are available here:

https://blog.kitware.com/new-animated-stream-lines-representation-for-paraview-5-3/

Cory

On Tue, Sep 12, 2017 at 2:04 PM, Scott, W Alan <wascott at sandia.gov> wrote:
> I played around with this plugin/filter a bit this morning, and am pretty
> confused.  Let’s start with a question – what does this plugin do?
>
>
>
> Lets start with my observations.
>
>
>
> I loaded the plugin, and then tested with Wavelet/ Gradient filter/ Stream
> Lines.
>
>
>
> Streamlines are green.  Color can’t be changed.  Is this a bug, or by
> design?
>
> Streamlines default to really, really small.
>
> As I toggled the orientation axis on and off, the streamlines grew.   Huh?
> Is this a bug, or by design?
>
> I tried Dave’s Small CTH dataset, then Resample to Image, then Gradient.
> This crashed.  This shouldn’t crash, should it?
>
>
>
>
>
> Thanks for any insight,
>
>
>
> Alan
>
>
>
> From: ParaView [mailto:paraview-bounces at paraview.org] On Behalf Of Wilhelm
> Lionel
> Sent: Tuesday, September 12, 2017 8:19 AM
> To: Paraview at paraview.org
> Subject: [EXTERNAL] [Paraview] Rendering problem with the Streamline
> Representation plugin
>
>
>
> Dear Paraviewers,
>
>
>
> I found sevral rendering issues in the Streamline Representation plugin. In
> order the issue to be reproducible, I followed the "How to test ?" section
> on this page
> https://blog.kitware.com/new-animated-stream-lines-representation-for-paraview-5-3/.
> In order to see what I'm talking about, one can open Paraview (GUI) tools ->
> Python Shell -> run script -> PVstateSurfRepBug.py (I load the plugin in the
> script)
>
>
>
> 1. The streamlines appear in green as default color. If I try to set their
> color to white in the GUI it does not work (Gradient proxy -> Coloring ->
> edit color map). The user must first set the color as some other preset and
> then the GUI sets the DiffuseColor attribute to whatever the user choose.
>
> 2. In addition to the gradient filter, if a slice filter is attached to the
> wavelet source, even if the streamlines should be displayed (because the
> slice plane is behind the streamlines) they do always show. If the
> representation type of the slice is Point Gaussian, Surface or Surface with
> edges, they do not show but the other representation types work well
>
> 3. If I want to record an animation of the streamlines, the "Transparent
> Background" option leads to strange animation (with AVI format but not with
> OGG/Theora).
>
>
>
> Despite these little bugs, I'd like to thank the developpers for this awsome
> plugin !! It realy helps to understand and interpret CFD results :)
>
>
>
> Kindly,
>
>
>
> Lionel Wilhelm
>
>
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-- 
Cory Quammen
Staff R&D Engineer
Kitware, Inc.