[vtkusers] Iso curve visualize

[Bill Lorensen]

The line is probably coincident with the image and you are seeing
z-buffer artifacts. I would give some thickness to the line using
vtkTubeFilter. But, first apply vtkStripper to the output of
itkContourFilter. Stripper will connect the independent segments  of
the lines output by ContourFilter and make suitable polylines for the
tube filter. You'll need to play with the number of sides and radius
parameters for the tube filter.

On Sat, Dec 20, 2008 at 1:11 PM, chensiqi <pidanchen at hotmail.com> wrote:
> Hi, VTKers.
>
> I wanna visualize the zero value iso curve of a distance map overlaid on the
> map, ( the zero levelset curve ).  The problem is I can only see the
> distance map. If I rotate or zoom, even a little bit, then I can clearly see
> the iso curve is actually there.  Why can't I visualize it at the first
> place?
>
> I use vtkContourFilter to extract the iso curve, add it to the
> vtkPolyDataMapper, then VtkActor.
> Distance map is added to vtkImageActor.
>
> Thanks
> Siqi
>
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