[vtkusers] Extracting a vtkLine from vtkPolyData

[David Edmunds]

Hi all,

I have a vtkPolyData which consists of a set of closed vtkLines. I would like to select a specific line from this set, based on the Z coordinates of points in the line.

I have been looking at examples which use vtkSelectionNode with the threshold option. The problem is, these seem to require a separate vtkDataArray associated with the points that you wish to threshold. Is it possible to search purely based on the point coordinates?

Kind regards,

Dave

The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, London SW7 3RP.

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