[vtkusers] Extract certain set of points from a vtkcellarray

[Shawn Waldon]

Hi Saeed,

If you have the dataset object there is a GetPoint(i) [1] function that
returns a point given its index in the list of points.  You can call
GetPoint(i) with each of your indices to get the point at that index.

HTH,
Shawn

[1]:
http://www.vtk.org/doc/nightly/html/classvtkDataSet.html#ae8406fa1dc144b392ef28111c71a47b0

On Fri, Jun 3, 2016 at 11:30 AM, Saeed Mahdizadeh Bakhshmand <
saeedbakhshmand at gmail.com> wrote:

> Hello,
>
> Is there any trick to obtain a set of points from a vtkCellArray
> quickly?(in a real time fashion without using GetNextCell that loads all of
> the points one by one)?
>
> I have scanned all of the point sets of a vtkCellArray(inLines) in a first
> round (inLines.GetNextCell) and generated a list of favourite points (e.g
> [5,13,46]) that I want to extract as quickly as possible in a second round.
> I wonder if GetCell() method can be used for this purpose and how? Or maybe
> there is another way that I am not aware of?
>
> Cheers,
> Saeed
>
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