[vtkusers] tubular structure

[David E DeMarle]

The tube filter takes in a set of points in space and a data array
which contains values for each point (defined as either a scalar or
vector) that determine the radius at each point.

You define that structure be creating a vtk_polydata, filling in the
points via SetPoints, and filling in the values via
GetPointData->SetScalars() or GetPointData->SetVectors().

Set that polydata as input to the tubefilter and call the filter's
SetVaryRadius*() method to choose either the scalar array or vector
array.

If you define your vector array to be orthogonal to the centroidal
axis and have a magnitude corresponding to your radius, your should be
able to do what you want.

On Tue, Feb 3, 2009 at 5:17 AM, EDSB EDSB <edsb at hotmail.it> wrote:
> Hi there,
> I am very new to VTK and I am using it by its Phyton wrapper. I would like
> to create a tubular structure and I want to put as input
> the radius and the centroidal axis (that is a spline).
> Do I have to use the vtkTubeFilter,isn't it? Where can I inupt my spline?
> Could you help me with an example?
> Thank a lot for your help!
> Mary
>
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-- 
David E DeMarle
Kitware, Inc.
R&D Engineer
28 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-371-3971 x109