[vtkusers] Fwd: vtkTubeFilter Side/Border Thickness

[Jérôme]

Hi again,

I didn't manage to reproduce the black capping. But my feeling
about normals was not so far away from the truth: My advice is that
you plug a vtkPolyDataNormals to the output of vtkThickTubeFilter
in order to get consistent normals all around the tube.

HTH
Jerome

2010/4/12 Jérôme <jerome.velut at gmail.com>

> [I forward to the mailing list]
>
> You are right: I didn't implement any CellData management. PointData
> are managed by the internal vtkTubeFilters.
> What do you think is the better CellData to add to the output?
>
> Another thing is that the cell points (triangles) are ordered in the
> same way for both extremities. Thus the cell normals should have
> the same orientation: for one of the two cappings, normal will point
> inside the caneloni. Maybe lightnings are mistaken because of that.
>
> I will give a look.
> Jerome
>
> 2010/4/12 Fauze Polpeta <fauze.polpeta at gmail.com>
>
> Indeed, I think it is originally black. (not becomes).
>>
>> So when angle of vision is perpendicular to the ring, you just see the
>> black capping.
>>
>> Sorry if this caused a misunderstanding.
>>
>> Fauze
>>
>> On Mon, Apr 12, 2010 at 11:29 AM, Fauze Polpeta <fauze.polpeta at gmail.com>
>> wrote:
>> > Hi;
>> >
>> > Quite nice filter Jérôme.
>> >
>> > One thing I noticed is => the capping you do "manually" does not
>> > provide the same result as the capping implemented in the ordinary
>> > vtkTubeFilter. When the camera is positioned in a way that the ring is
>> > perpendicular to our angle of vision, the capping surface of the ring
>> > becomes black.
>> >
>> > Is there a way to make the capping surface of your filter to inherit
>> > the color that is set by means of the actor that the filter is
>> > mapped/connected to? (i.e. ringActor->GetProperty()->SetColor)
>> >
>> > Regards
>> >
>> > Fauze
>> >
>> > On Sat, Apr 10, 2010 at 10:56 AM, Jérôme <jerome.velut at gmail.com>
>> wrote:
>> >> Hi,
>> >>
>> >> I updated the licence (BSD) and commented the filter. You will
>> >> find it here:
>> >> http://github.com/jeromevelut/
>> >>
>> >> The 'vtkKinship' git repo is what interests you: get it, compile it
>> >> with CMake. The filter vtkThickTubeFilter produces the latter
>> >> screenshot.
>> >>
>> >> It is simply based on 2 vtkTubeFilters and a custom capping. So
>> >> it takes as input any polydata, assuming they have polylines.
>> >> It means that vtkLineSource is suitable for this filter. I tried with
>> >> vtkSplineSource under ParaView and created funny macaroni !
>> >>
>> >> Feel free to ask any questions regarding that filter/repo
>> >>
>> >> Jerome
>> >>
>> >> 2010/4/10 Fauze Polpeta <fauze.polpeta at gmail.com>
>> >>>
>> >>> Hi Jérôme
>> >>>
>> >>> This is exactly what I'm looking for. Please, let me know when
>> >>> available and how to download.
>> >>>
>> >>> Was this pipe built from a vtkLineSource? If not, would I still be
>> >>> able to positioning it by relying on the coordinates of two 3D points?
>> >>> Or do I need to use vtkTransform?
>> >>>
>> >>> Thanks for your courtesy
>> >>>
>> >>> Fauze
>> >>>
>> >>> On Fri, Apr 9, 2010 at 7:20 PM, David Doria <daviddoria+vtk at gmail.com<daviddoria%2Bvtk at gmail.com>
>> >
>> >>> wrote:
>> >>> > On Fri, Apr 9, 2010 at 6:14 PM, Jérôme <jerome.velut at gmail.com>
>> wrote:
>> >>> >> Hi,
>> >>> >>
>> >>> >> I attached a screenshot of a filter of mine that builds what I
>> think
>> >>> >> you are
>> >>> >> looking for... If this is what you, just tell me: I just have to
>> put
>> >>> >> some
>> >>> >> licence info
>> >>> >> in my github lib, then you can get it.
>> >>> >>
>> >>> >> HTH
>> >>> >> Jerome
>> >>> >
>> >>> > That is definitely what he was looking for. Jermoe - you should
>> >>> > definitely send it to the devel list and get it added to VTK.
>> >>> >
>> >>> > Thanks,
>> >>> >
>> >>> > David
>> >>> >
>> >>
>> >>
>> >
>>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20100412/22ceb88d/attachment.htm>