[vtkusers] vtkStripper/TriangleStrips not working on this particular data, why?

[Bill Lorensen]

If this were a closed contour, I believe you would get one polyline.
But for a open contour you are not guaranteed to get a single
polyline. The algorithm starts with a point (looks like it is the
first point in the first line segment) and collects as many points as
it can for the first polyline. This completes the first polyline. If
the first point of the first line is not one of the end points of your
original data, then it will generate two polylines. At least that is
what I recall.

Bill


On Fri, Apr 11, 2014 at 10:43 AM, Dr. Roman Grothausmann
<grothausmann.roman at mh-hannover.de> wrote:
> Dear mailing list members,
>
>
> Attached is a very simple test.vtp (see *_01.png) which for some reason
> cannot be converted into a single vtkPolyLine with vtkStripper. Even if I
> use paraview with Clean+Triangulate+TriangleStrip the result still consists
> of two vtkPolyLine (see extracted cell 0 (thicker line) and green cell
> labels in *_03.png).
> Why does vtkStripper not yield a single vtkPolyLine from this particular
> dataset? Is it the odd order of the points and lines?
> Is this a bug?
> If not, how can I achieve what I need, i.e. getting a single vtkPolyLine?
>
> Any help or hints are very much appreciated
> Roman
>
> --
> Dr. Roman Grothausmann
>
> Tomographie und Digitale Bildverarbeitung
> Tomography and Digital Image Analysis
>
> Institut für Funktionelle und Angewandte Anatomie, OE 4120
> Medizinische Hochschule Hannover
> Carl-Neuberg-Str. 1
> D-30625 Hannover
>
> Tel. +49 511 532-9574
>
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