[vtkusers] Re: Extrude a 3D object along 3D path ?

[Jean-Marie Normand]

Thanks for your answer Goodwin,
my problem is this SweptSurface only take a vtkImageData* as an input
and my inputs are either vtkImplicitFunctions or vtkPolyData (when i
pass my implicit function through a contour filter). I haven't succeeded
in transforming those data into vtkImageData*, I tried to use a
vtkDataSetToImageFilter but I got a compilation error  when doing

vtkDataSetToImageFilter *dataToImFil = vtkDataSetToImageFilter::New();
the error being "error: invalid conversion from 'vtkObject*' to
'vtkDataSetToImageFilter*'"

I also tried the vtkShepardMethod to convert my vtkPolyDatas into
vtkImageData but the resulting object hasn't got the same shape at all.

So I'm wondering how can I use the vtkSweptSurface with my data, any
help would be appreciated.

Jim

Le mercredi 02 novembre 2005 à 20:23 +0000, Goodwin Lawlor a écrit :
> Jean-Marie Normand wrote:
> > Hi,
> > I'd like to know whether it's possible in VTK to extrude a 3D-object
> > (let's say a vtkPolyData) along a given 3D path for example to create a
> > volume simulating the displacement of an object in the space.
> > 
> > I haven't found any vtk classes that seems to do the trick but I may be
> > wrong.
> > Any help would be greatly appreciated, thanks in advance.
> > 
> > 
> > Jim.
> > 
> > 
> > _______________________________________________
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> > 
> Hi Jim,
> 
> There was a patented class in vtk 4.x called vtkSweptSurface to do this. 
>   You may be able to use vtkLinearExtrusionFilter (recursively or 
> several filter in series) to achieve the same effect - it isn't patented.
> 
> hth
> 
> Goodwin
> 
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