[vtkusers] VERY IMPORTANT QUESTION ABOUT CLIPPING

[David Doria]

On Mon, Nov 5, 2012 at 11:01 AM, David Higuita
<david.higuita.75 at gmail.com>wrote:

> HI, MY NAME IS DAVID, I'M FROM COLOMBIA, I'M WORKING WITH CLIPPING
> FUNCTIONS, AND I HAVE A CODE THAT MAKE IT, BUT IN THE CODE WE NEED TWO
> OBJECTS:
>
> vtkCylinder AND vtkCylinderSource
>
> AND IN THE WORKING OF CODE WE NEED GET AN IMPLICIT FUNCTION AND THE CODE
> DO IT WITH THE OBJECT vtkCylinder
> BUT IN THE RESULT WE CAN'T CHANGE THE HEIGHT (of course)
> . THE QUESTION IS ¿CAN WE GET THE IMPLICIT FUNCTION FROM AN OBJECT
> vtkCyllinderSource? TO CHANGE THE HEIGHT
>
>
>
> THIS IS PART OF CODE:
>
>
>    sphere = vtk.vtkCylinderSource()
>     sphere.SetRadius(radio)
>     sphere.SetCenter(F[0][0],F[0][1],F[0][2])
>     sphere.SetHeight(altura)
>
>     spheres = vtk.vtkCylinderSource()
>     spheres.SetRadius(radio)
>     spheres.SetCenter(F[0][0],F[0][1],F[0][2])
>     spheres.SetHeight(altura)
>     spheres.SetResolution(100)
>
>     cliper = vtk.vtkClipPolyData()
>     cliper.SetInput(reader.GetOutput()) # original: reader
>     cliper.SetClipFunction(sphere) #tenia sphere
>     cliper.GenerateClipScalarsOn()
>     cliper.SetValue(0.0)
>
> WE NEED GET THE IMPLICIT FUNCTION (SetClipFunction(sphere)).
>
> ¿CAN YOU HELP US WITH LINKS AND TUTORIALS?
>
> THANKS.
>

Please do not write in all caps.

I believe what you're looking for is this new class:

http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/ImplicitPolyDataDistance

It will create an implicit function from a polydata.

Good luck,

David
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