[vtkusers] vtkPoints to vtkPolyData

[Amy Squillacote]

In order to "see" the points in ParaView, you would need to create a
vtkVertex cell for each point. In VTK, a "vertex" is a cell (and will be
visible in ParaView); a "point" is just an (x, y, z) coordinate.

- Amy

On Thu, Feb 19, 2009 at 9:35 AM, Syrkina Ekaterina <syrkinae at ethz.ch> wrote:

> Hello,
>
> I recently needed to display point cloud in paraview and "converted"
> vtkPoints to vtkPolyData this way:
>
> vtkPolyData *data = vtkPolyData::New();
> vtkPoints *points = vtkPoints::New();
> // some code to read points from text file into vtkPoints object //
> data->SetPoints(points);
>
> It didn't solve my problem, since paraview displays only points
> associated by geometry, so one has to define faces or smth else. But
> maybe it solves your problem.
>
> Best,
> Katya
>
> > -----Original Message-----
> > From: vtkusers-bounces at vtk.org
> > [mailto:vtkusers-bounces at vtk.org] On Behalf Of kent williams
> > Sent: Thursday, February 19, 2009 3:47 PM
> > To: VTK users group
> > Subject: Re: [vtkusers] vtkPoints to vtkPolyData
> >
> > I'm not sure what you're asking.  Are you saying you have a set of 3D
> > points, and want to convert them into a polygon?  Then Dean's function
> > works just fine. It assumes that your points are ordered, and it's up
> > to you to make sure they're co-planar, but that function is 3D.
> >
> > If you're doing something more complicated, you need to be more
> > specific about what you're trying.
> >
> > On Thu, Feb 19, 2009 at 6:10 AM, Daniel Meier
> > <daniel.meier at oleco.net> wrote:
> > > Hi all,
> > >
> > > I'm new to vtk. How can I convert vtkPoints to vtkPolydata.
> > The points
> > > represent an object in 3D. I have found
> > ConvertPointSequenceToPolyData (
> > >
> > http://www.vtk.org/pipermail/vtkusers/2007-November/093317.htm
> > l )  from Dean
> > > Inglis which works fine in 2D but how can this be done in 3D?
> > >
> > > Thanks for any suggestions,
> > >
> > > Daniel
> > > ________________________________
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