[vtkusers] marching cubes on an implicit surface
mweiss at cbs.mpg.de
Mon Jul 6 10:05:30 EDT 2009
Any of VTKs contour filters work on grids/images/etc.
So, you will have to sample your function (what the stencil thing suggested by Jerome probably does).
Department of Neurophysics
Max Planck Institute for Human Cognitive and Brain Sciences
----- Original Message -----
From: "Christian Walder" <chwa at imm.dtu.dk>
To: vtkusers at vtk.org
Sent: Monday, July 6, 2009 1:44:33 PM GMT +01:00 Amsterdam / Berlin / Bern / Rome / Stockholm / Vienna
Subject: [vtkusers] marching cubes on an implicit surface
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?
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