[vtkusers] vtkImplicitDataSet to contouring 2D shape

[David.Pont at ForestResearch.co.nz]

Hi Man,
   What you need is vtkImplicitModeller followed by vtkContourFilter, take
a look at the hello.tcl example.
  regards
    Dave Pont



|--------+--------------------------------->
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  |      Subject:     [vtkusers] vtkImplicitDataSet to contouring 2D shape                                     |
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Hi all vtkUsers,

I would like to use vtkImplicitDataSet and vtkContourFilter to contouring a
2D shape at various offset.
I hope vtkImplicitDataSet to generate scalar values from a vtkPolyData.
This poly data contains a shape in 2D, only lines and points are filled.
After, I would like to input into a vtkContourFilter to extract contours
but I trap the error message "cannot evaluate vtkImplicitDateSet".
How can I create an implicit function (to connect into vtkContourFilter)
from the geometry of my vtkPolyData. I think vtkImplictDataSet should be a
possible way but I miss something....

Thanks a lot.
Manfred