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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">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?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Lets start with my observations.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">I loaded the plugin, and then tested with Wavelet/ Gradient filter/ Stream Lines.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Streamlines are green. Color can’t be changed. Is this a bug, or by design?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Streamlines default to really, really small.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">As I toggled the orientation axis on and off, the streamlines grew. Huh? Is this a bug, or by design?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">I tried Dave’s Small CTH dataset, then Resample to Image, then Gradient. This crashed. This shouldn’t crash, should it?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Thanks for any insight,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Alan<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> ParaView [mailto:paraview-bounces@paraview.org]
<b>On Behalf Of </b>Wilhelm Lionel<br>
<b>Sent:</b> Tuesday, September 12, 2017 8:19 AM<br>
<b>To:</b> Paraview@paraview.org<br>
<b>Subject:</b> [EXTERNAL] [Paraview] Rendering problem with the Streamline Representation plugin<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Dear Paraviewers,<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">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
<a href="https://blog.kitware.com/new-animated-stream-lines-representation-for-paraview-5-3/">
https://blog.kitware.com/new-animated-stream-lines-representation-for-paraview-5-3/</a>. 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)<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">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.<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">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
<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">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).<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Despite these little bugs, I'd like to thank the developpers for this awsome plugin !! It realy helps to understand and interpret CFD results :)<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Kindly,<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Lionel Wilhelm<o:p></o:p></span></p>
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