[vtkusers] Create 3-D surface from 2-D contours of slices

[Darshan Pai]

I am wondering if he needs to make it polylines by passing it to a
vtkStipper before using contourtosurface

On Sun, Oct 24, 2010 at 12:56 PM, <jimcp at cox.net> wrote:

> I am not sure if there is a free description of the content of "polydata".
> The vtk book is the definitive reference and does go into considerable
> detail regarding the meaning of the term "polydata". My interpretation is it
> is a term used for any unstructured grid representation, this could be a
> limited or incomplete due to my own limited understanding. My understanding
> is Polydata objects always contain some number of points coordinates and may
> have lines, polygons, normals, scalars or other forms of array data
> associated with the object being described.
>
> This means the output from the contour widget is polydata of points and
> lines, the output from other filters may be cells, triangle strips or the
> like. My suggestion would be to run the example exactly first, then replace
> the generation of the circles with your contour widget output. you may need
> to take some additional actions to assert that the point ids you build into
> the contour are oriented to produce a useful set of polygons.
>
> Hope that helps,
> Jim
> ---- shengweng <shengwen.guo at gmail.com> wrote:
> >
> >  I have tried the method before, but I could only display the contours,
> and
> > could not get surface.
> >  The following code you pointed out generated the PolyData explicitly,
> but
> > the ContourWidget create the PolyData implicitly, I don't know how to
> check
> > if the contours are stored in the PolyData correctly and there were
> points
> > and lines, no vertex,cells in the PolyData.
> >   How to incorporate the 2-D contours including points and lines with
> > z-depth(slice dimension) and then convert them into effective PolyData
> with
> > x,y,z values?
> >
> >
> >
> > --
> > View this message in context:
> http://vtk.1045678.n5.nabble.com/Create-3-D-surface-from-2-D-contours-of-slices-tp3234422p3234470.html
> > Sent from the VTK - Users mailing list archive at Nabble.com.
> > _______________________________________________
> > Powered by www.kitware.com
> >
> > Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
> >
> > Please keep messages on-topic and check the VTK FAQ at:
> http://www.vtk.org/Wiki/VTK_FAQ
> >
> > Follow this link to subscribe/unsubscribe:
> > http://www.vtk.org/mailman/listinfo/vtkusers
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the VTK FAQ at:
> http://www.vtk.org/Wiki/VTK_FAQ
>
> Follow this link to subscribe/unsubscribe:
> http://www.vtk.org/mailman/listinfo/vtkusers
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20101024/46b4a642/attachment.htm>