yade-dev team mailing list archive

[Janek Kozicki <janek_listy@xxxxx>]

Hi Boon,

great thanks. I think that fixing orientation should be possible :)
I cannot find your pull request though. Can you send a link?

cheers
Janek

Chia Weng Boon said:     (by the date of Sun, 27 Jan 2019 22:28:11 +0800)

> Hi Janek,
> I submitted a Pull Request.  I fixed the display for the free fall examples
> using Marching Cubes.  However, the orientation of the particles are not
> completely correct yet in QT.  See for example the Wedge Example.
> I think that was the reason why I moved to ParaView.
> 
> Boon
> 
> On Sat, Jan 26, 2019 at 11:19 PM Janek Kozicki <janek_listy@xxxxx> wrote:
> 
> > Hi Boon,
> >
> > thanks for you reply. Yes, I think that this marching cubes method
> > can work really good. The only missing thing is to make the caching
> > of calculated triangles correctly. Once the triangles for the shape
> > are calculated you can use them all the time, unless the body deforms or
> > is cut in half (I'm not sure if this can happen).
> >
> > A thing to discuss: you could store cached triangles not inside
> > Gl1_PotentialParticle but inside PotentialParticle with Attr::hidden
> > or (Attr::hidden|Attr::noSave). For example see into
> > pkg/common/Cylinder.hpp as an example. In this way you will not need
> > this loop in pkg/common/Gl1_PotentialParticle.cpp line 112, and
> > automatically you have solved the problem what to draw when a body
> > was deleted or added to scene. Because you only recalculate marching
> > cubes for particular single body when you need to draw it and it
> > wasn't generated yet.
> >
> > I hope that the post which I have just sent to mailing list about
> > object oriented design deficiencies of your code wasn't too harsh.
> > My apologies.
> >
> > best regards
> > Janek
> >
> > Chia Weng Boon said:     (by the date of Sat, 26 Jan 2019 11:12:40 +0800)
> >  
> > > Dear Janek,
> > > I will look into it. Thanks. In the python script, the vtk files at
> > > specific time intervals are output into the vtk folder.  I have been  
> > using  
> > > ParaView mainly for visualisation for both Potential Particles and
> > > Potential Blocks.  The colour of the particles can also be changed in
> > > ParaView.  I suspect that the Marching Cube display is not showing the
> > > position and size of the particles correctly (I abandoned the marching
> > > cubes quite long ago, but agree that real time display with simulation is
> > > more user friendly)
> > >
> > > Let me check the example files again.
> > >
> > > Boon  
> >
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-- 
Janek Kozicki                               http://janek.kozicki.pl/  |