[vtkusers] Correct approach for assembly of polylines?

[Amy Henderson]

At 11:48 AM 4/14/2004, jarv0075 wrote:
>On 14 Apr 2004, Amy Henderson wrote:
> > At 11:07 AM 4/14/2004, jarv0075 wrote:
> > >
> > >I'm currently trying to reassemble some polylines that vtk broke up into
> > >several different cells...  My current approach is to use nested loops
>to
> > >match up the end points.
> > >
> > >Is there a better way to do this?
> >
> > Try passing the output of vtkCutter through vtkStripper.  The online
> > documentation for that class is here:
> > http://www.vtk.org/doc/nightly/html/classvtkStripper.html
> >
> > - Amy
> >
>
>
>But this does not work in the case of cutting data with holes present.
>vtkCutter gives me a bunch of polylines, but some are complete / closed
>(for the holes generally) but larger ones are broken up into serveral
>separate polylines.
>
>Thus, throwing all the output into a stripper does not produce the desired
>results.
>
>I am aware that GlutTesselatorTriangluate or something will do this, but I
>do not have access to install additional libraries on this system.
>
>Is there maybe some flag that I can set on vtkCutter to have it -not- split
>up edges into different polylines?  Or a way to have vtkStripper reassemble
>only the ones that go together instead of just connecting cell1 to cell2,
>to cell3, to cell4?

vtkStripper does make sure that the cells it connects share points; it 
doesn't just blindly connect cells together.

- Amy

>Thanks