[vtkusers] isosurface from an implicit model..

[Bill Lorensen]

The implicit model produces an unsigned distance.

Bill

At 05:07 PM 5/23/02 -0400, K.R.Subramanian wrote:

>I have a structured points dataset (discretization of an implicit model).
>I extract the isosurface at 0.0 to extract the boundary.  It seems like
>there are two surfaces very close to each other in the extracted surface. When I
>use vtkMassProperties to measure the volume and surface area, they are
>very close to nearly being 2 times the original object's measures. I tried this
>on a simple sphere as well as a CT dataset.
>
>Then I looked at the wireframe model of it and I notice there are pairs of
>edges between all vertices, and very close to each other, suggesting a double
>surface..
>
>How is that possible? The scalars, of course range from negative (outside)
>to positive (inside) values..
>
>Thanks.
>
>    -- krs
>
>--
>K.R.Subramanian                        Phone: (704) 687-4872
>Department of Computer Science         FAX:   (704) 687-4893
>UNC Charlotte, CARC 311                Email: krs at cs.uncc.edu
>Charlotte, NC 28223-0001               Web: http://www.cs.uncc.edu/~krs
>
>
>
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