[vtkusers] vtkUnstructuredGrid: How to unify two instances to a single one?

[Bill Lorensen]

vtkAppendFilter
http://www.vtk.org/doc/nightly/html/classvtkAppendFilter.html


On Mon, Jul 12, 2010 at 12:25 PM, Rudolf Reinhard
<reinhard at zlw-ima.rwth-aachen.de> wrote:
> Dear all,
>
> you hope that much you can help me. As a newbie in vtk I have a problem,
> which I am not able to solve so far. I am trying at it for some time now and
> I am forced to present a solution next week.
>
> That's why I am asking you. So I start with its description.
>
> Suppose one has two instances of unstructured grids as input (i.e., two
> instances of  vtkUnstructuredGrid). What is to do to obtain one instance of
> an unstructured grid, which "consists" of the two grids given as input (Or
> in other words: How to glue them to each other such that there is only one)?
>
> It is really necessary to obtain one single geometry as output. By using
> ParaView (version 3.8.0) there are two ways to check if the obtained result
> corresponds to the required one. The first way is to apply the Connectivity
> filter: The requested result is to get a single coloured surface. The second
> way is to apply the Clip filter after having extracted the grid's surface:
> The requested result is to obtain a single contour without any lines inside
> of it, regardless of the cutting plane's position (such that it is
> continuously transformable into a circle line).
>
> The obtained results do not satisfy these needs so far. Though it is quite
> easy to get a representation of both of the grids in a single vtk-file. But
> this is just necessary and not sufficient.
>
> I hope to have given an usable description of my problem and that you
> believe me, that this posting is the cry for help after having no idea and
> (this is much worse) soonly no time anymore to work at it.
>
> I appreciate any help.
>
>
> Thanks in advance,
> Rudi
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