[vtkusers] marching cubes on an implicit surface

[Jérôme]

Hi,
You may want to build such a pipeline :
vtkImplicitFunctionToImageStencil -> vtkImageStencil -> vtkContourFilter

It *should* do the trick... Yet I had never try it !

Best,

Jerome

2009/7/6 Christian Walder <chwa at imm.dtu.dk>

> Dear All,
>
>
> I am completely new to vtk, and I am hoping it can solve my problem:
>
>
> I have an implicit surface function mapping from R^3 to R (from three
> dimensions to a scalar value), and I would like to run a marching cubes
> type algorithm on it, to extract a mesh which approximates the zero
> level set of the function. In principle it should be possible to use
> some marching cubes library to do this by e.g. passing a pointer to the
> function which evaluates the implicit surface function, along with
> perhaps a bounding box and resolution, etc. However, from taking a quick
> look it seems that vtk can only do this for voxel data, ie for functions
> which are defined numerically on a 3D grid.
>
>
> Does anyone know if it is in fact possible to do what I want? If so, can
> anyone recommend a good reference or place to start?
>
>
> best regards,
>
>
> Christian
>
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