[vtkusers] Making tubes that looks good !

[Sebastien Auclair]

I used 3 just as an example... In fact, i'm using 5 as sides count.
See attached image... (The red sphere is not to be considered as part of the
problem. )

Thanks !
_______________________
Seb


----- Original Message -----
From: "Sebastien Auclair" <sxa at fluent.com>
To: "Bruno Travençolo" <bant at grad.icmc.usp.br>
Cc: <vtkusers at public.kitware.com>
Sent: Wednesday, June 04, 2003 10:15 AM
Subject: Re: [vtkusers] Making tubes that looks good !


> No it varies because of the corners.
> If the tube is set for 3 facets, it kinds of extrude a triangle oriented
on
> the point's normal.
> If you try it with a initial polyline made of only 2 segments with a 90
> degree corner, you'll see that the radius gets smaller near the corner
> because the triangle turns,... re-orient itself at each points.
> This is why adding points might do the trick !
>
> Thanks
> _________________________
> Seb
>
> ----- Original Message -----
> From: "Bruno Travençolo" <bant at grad.icmc.usp.br>
> To: "Sebastien Auclair" <sxa at fluent.com>
> Cc: <vtkusers at public.kitware.com>
> Sent: Wednesday, June 04, 2003 10:04 AM
> Subject: Re: [vtkusers] Making tubes that looks good !
>
>
> > Hello,
> >
> > >Making a tube out of a polyline !
> > >
> > >vtkTubeFilter makes the diameter of the tube irregular and we can't use
> it.
> > >
> >
> >
> > Turn on/off the variation of tube radius with scalar value.
> >
> >  The tube diameter may be irregular because it is variating proportional
> > with the scalar value ou vector. Try to use:
> SetVaryRadiusToVaryRadiusOff();
> >
> >             vtkTubeFilter *tf = vtkTubeFilter::New();
> >             tf->SetVaryRadiusToVaryRadiusOff();
> >             tf->SetInput(polyline);
> >             tf->SetRadius(0.5);
> >             tf->SetNumberOfSides(5);
> >
> > bye!!
> >
> > Bruno.
> >
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