<div dir="ltr"><div dir="ltr"><div>Hi, Mohammed,<br><br></div> Yes, I know that feeling... Paraview is complex, yes. It's difficult to get the hang of its code in a glimpse. Either you invest the time to dissect the code or look into something simpler. You may take a look at how I setup a VTK viewer: <a href="https://github.com/PauloCarvalhoRJ/gammaray/blob/master/viewer3d/view3dwidget.cpp">https://github.com/PauloCarvalhoRJ/gammaray/blob/master/viewer3d/view3dwidget.cpp</a> (It's several orders of magnitude simpler than Paraview). It's a 3D viewer in a Qt window though. I've never tried VTK charts myself (I use the more lightweight Qwt and Qt Charts APIs for that).<br></div><div><br></div><div>regards,<br></div><div><br></div><div>Paulo<br></div></div><br><div class="gmail_quote"><div dir="ltr">Em qua, 26 de dez de 2018 às 13:38, Mohamed Amine Mzoughi <<a href="mailto:aminemzoughi@febus-optics.com">aminemzoughi@febus-optics.com</a>> escreveu:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF">
<p>Hello again,</p>
<p>If I do that, the chart is not visible anymore (the Qt widget is
all black), if I change the renderer of the vtkContextView also
(the Qt widget is all white) !</p>
<p>I give up for the moment !</p>
<p>ParaView is a such complex software, that I can't trace the stuff
related to anti-alisaing in it (reverse engineering ParaView it is
tough : a complex build system, many layers, proxies, in fact,
it's an oriented object mix of a lasagna and spaghetti code !).<br>
</p>
<p>Thanks anyway.<br>
</p>
<div class="gmail-m_6881189974807897250moz-cite-prefix">Le 26/12/2018 à 16:02, Paulo Carvalho a
écrit :<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div>
<div>Hi, Mohammed,<br>
<br>
</div>
Strange indeed. Did you create the vtkRender object
yourself or you just used the default one returned by
GetRenderer()? If the latter is your case, I recommend
creating your own vtkRender:<br>
</div>
<div dir="ltr"><br>
<span style="color:rgb(128,0,0)">m_renderer</span><span style="color:rgb(192,192,192)"> </span>=<span style="color:rgb(192,192,192)"> </span><span style="color:rgb(128,0,128)">vtkSmartPointer</span><<span style="color:rgb(128,0,128)">vtkRenderer</span>>::<span style="color:rgb(0,103,124)">New</span>();<br>
<span style="color:rgb(128,0,0)">m_renderer</span>-><span style="font-style:italic;color:rgb(0,103,124)">UseFXAAOn</span>();<br>
<br>
vtkFXAAOptions* const aaOpts =
m_renderer->GetFXAAOptions();<br>
aaOpts->SetRelativeContrastThreshold(0.125);<br>
aaOpts->SetHardContrastThreshold(0.045);<br>
aaOpts->SetSubpixelBlendLimit(0.75);<br>
aaOpts->SetSubpixelContrastThreshold(0.25);<br>
aaOpts->SetUseHighQualityEndpoints(true);<br>
aaOpts->SetEndpointSearchIterations(12);<br>
<br>
<span style="color:rgb(128,0,0)">m_view</span>-><span style="font-style:italic;color:rgb(0,103,124)">GetRenderWindow</span>()-><span style="font-style:italic;color:rgb(0,103,124)">AddRenderer</span>(<span style="color:rgb(128,0,0)"> m_renderer</span> );</div>
<div><br>
</div>
<div>cheers,<br>
<br>
</div>
<div>Paulo<br>
</div>
<div dir="ltr"><br>
</div>
</div>
</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr">Em qua, 26 de dez de 2018 às 12:15, Mohamed Amine
Mzoughi <<a href="mailto:aminemzoughi@febus-optics.com" target="_blank">aminemzoughi@febus-optics.com</a>>
escreveu:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF">
<p>Hello Paulo,</p>
<p>Even without SmoothingOn* instructions, I still have a
problem in my 2D charts (I use a subclass of vtkChartXY,
same issue with vtkHistogramChart2D, I have rectangles in
screen). <br>
</p>
<p>In ParaView, the line is smooth :</p>
<img src="cid:167eb2f0a9e8dc7ba8a1" alt=""><br>
whereas in my VTK app, it isn't :<br>
<br>
<img src="cid:167eb2f0a9e9ee00e052" alt=""><br>
<br>
I don't know the issue...<br>
<br>
I'm calling the FXAA instructions before Render() in the
constructor, I tried even to call them before each call to
Render().<br>
<br>
Best regards.<br>
<br>
<div class="gmail-m_6881189974807897250gmail-m_-8765007500146758639moz-cite-prefix">Le
26/12/2018 à 14:21, Paulo Carvalho a écrit :<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div>
<div>Hello, Mohamed!<br>
<br>
</div>
It seems that your last calls
(*SmoothingOn()) conflict with UseFXAAOn().<br>
<br>
</div>
Here is the output I get when I add a call to
PolygonSmoothingOn(). Not only it is not
antialiased, but you can notice the edges
triangle strips, visually ruining the results:<br>
<br>
<div><img src="cid:167eb2f0aa0cb971f163" alt="image.png" height="354" width="561"><br>
<br>
</div>
<div>This one is rendered with only
UseFXAAOn() and some configuration to the
vtkFXAAOptions object like you did:<br>
</div>
<div>
<div><img src="cid:167eb2f0aa0cb971f164" alt="image.png" height="366" width="561"><br>
<br>
</div>
<div>kind regards,<br>
<br>
</div>
<div>Paulo<br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr">Em qua, 26 de dez de 2018 às 10:03,
Mohamed Amine Mzoughi <<a href="mailto:aminemzoughi@febus-optics.com" target="_blank">aminemzoughi@febus-optics.com</a>>
escreveu:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hello,<br>
<br>
I want to enable Anti-alisaing in my VTK app, so I
took some parameters <br>
from ParaView and it still doesn't work :<br>
<br>
m_view->GetRenderer()->UseFXAAOn(); //
enable AA<br>
<br>
vtkFXAAOptions* const aaOpts =
m_view->GetRenderer()->GetFXAAOptions();<br>
aaOpts->SetRelativeContrastThreshold(0.125);<br>
aaOpts->SetHardContrastThreshold(0.045);<br>
aaOpts->SetSubpixelBlendLimit(0.75);<br>
aaOpts->SetSubpixelContrastThreshold(0.25);<br>
aaOpts->SetUseHighQualityEndpoints(true);<br>
aaOpts->SetEndpointSearchIterations(12);<br>
<br>
what am I missing ?<br>
<br>
Also,
m_view->GetRenderWindow()->GetMultiSamples()
=> returns 8.<br>
<br>
and I called also :<br>
<br>
m_view->GetRenderWindow()->LineSmoothingOn();<br>
m_view->GetRenderWindow()->PolygonSmoothingOn();
<br>
m_view->GetRenderWindow()->PointSmoothingOn();<br>
<br>
Thanks.<br>
<br>
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