Hi, <br>You may want to build such a pipeline :<br>vtkImplicitFunctionToImageStencil -> vtkImageStencil -> vtkContourFilter<br><br>It *should* do the trick... Yet I had never try it !<br><br>Best,<br><br>Jerome<br><br>
<div class="gmail_quote">2009/7/6 Christian Walder <span dir="ltr"><<a href="mailto:chwa@imm.dtu.dk">chwa@imm.dtu.dk</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Dear All,<br>
<br>
<br>
I am completely new to vtk, and I am hoping it can solve my problem:<br>
<br>
<br>
I have an implicit surface function mapping from R^3 to R (from three<br>
dimensions to a scalar value), and I would like to run a marching cubes<br>
type algorithm on it, to extract a mesh which approximates the zero<br>
level set of the function. In principle it should be possible to use<br>
some marching cubes library to do this by e.g. passing a pointer to the<br>
function which evaluates the implicit surface function, along with<br>
perhaps a bounding box and resolution, etc. However, from taking a quick<br>
look it seems that vtk can only do this for voxel data, ie for functions<br>
which are defined numerically on a 3D grid.<br>
<br>
<br>
Does anyone know if it is in fact possible to do what I want? If so, can<br>
anyone recommend a good reference or place to start?<br>
<br>
<br>
best regards,<br>
<br>
<br>
Christian<br>
<br>
_______________________________________________<br>
Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
<br>
Visit other Kitware open-source projects at <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
<br>
Please keep messages on-topic and check the VTK FAQ at: <a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank">http://www.vtk.org/Wiki/VTK_FAQ</a><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
<a href="http://www.vtk.org/mailman/listinfo/vtkusers" target="_blank">http://www.vtk.org/mailman/listinfo/vtkusers</a><br>
</blockquote></div><br>