[vtkusers] Make Smooth Isosurfaces

[Bill Lorensen]

Sorry, reading your e-mail in more detail. Are you generating the
isosurfaces in vtk using vtkContourFIiter or some equivalent. If so,
you should run the output through vtkPolyDataNormals.

On Thu, Oct 29, 2009 at 4:59 PM, Bill Lorensen <bill.lorensen at gmail.com> wrote:
> What do you mean by rough? Perhaps the faces are flat shaded? How are
> you displaying the model in vtk?
>
> Are your isosurfaces composed of only triangles? If so, did you
> provide surface normals at each point?
>
> On Thu, Oct 29, 2009 at 4:30 PM, Sanket Jain <jainsanket1 at gmail.com> wrote:
>> Hello Experts,
>>
>> I have just started to use VTK to fulfill my visualization needs. I am
>> trying out few fundamental steps which would be crucial for my future
>> development.
>>
>> I exported an  Finite Element Model (FEM) from COMSOL and wrote it as vtk
>> unstructured grid in matlab (points, connections and data). I am just trying
>> to read my vtk file and trying to visualize the isosurfaces at some value.
>>
>> The problem is the isosurfaces are very rough even when I increased the mesh
>> density in my COMSOL model. I tried to perform the same task in paraview and
>> even there i saw the same problem.
>>
>> Do you think that increasing the mesh density should solve it? I cannot
>> increase the mesh density because of computational issues. Any ideas on this
>> problem will be appreciated.
>>
>> Thank you,
>>
>> Sanket Jain
>>
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>