Can't visualize PolyData with Java

[Bob Palank]

Is it possible to use vtk through Microsoft VJ++ and create a webbased vtk
app that supports user interaction?
BR
   Bob Palank srfpala at inlink.com

----- Original Message -----
From: Rene Tschirley <pooh at cs.tu-berlin.de>
To: VTK Userlist <vtkusers at public.kitware.com>
Sent: Thursday, May 25, 2000 5:09 AM
Subject: Can't visualize PolyData with Java


> Dear all,
>
>
> I'm close to desperation. :) With my first steps with vtkJava, I thought
> it would be easy to read a file with vertices and triangles, create a
> vtkpolyData object (calles surface) and feed all the vertex triangle data
> to the PolyData and visualize it.
>
> Now, I can read the file correctly and feed the data to the PolyData:
>
> 1. I create a vtkPoints object and feed it with InsertNextPoint()
> 2. I create a vtkCellArray object and feed it with InsertNextCell() and
>    InsertCellPoint().
> 3. I create the vtkPolyData object (surface), set the vertex data with
>    SetPoints() to my vtkPoints object and set the triangle data with
>    SetPolys().
> 4. Some debug output indicates the following:
>    - GetNumberOfCells() returns apriximately the correct number of
>      Vertices.
>    - GetMaxCellSize() returns the correct cell size of 3.
>    - GetBounds() returns quite exactly the bounds of my object.
>
> All seems perfect. The only trouble is -- I can't see my object. Before
> you ask, yes my rendering pipeline is ok. For testing, I added a second
> actor showing the result of a vtkOutlineFilter from my surface. I even
> added a primitive triangle by hand (using vtkPoints, vtkCellArray and
> vtkPolyData). The bounding box and the simple triangle are shown as
> expected, but not the surface.
>
> Does anyone have an idea what went wrong?
>
>
> Bye,
> René
>
> --
> Dipl.-Inform. René Tschirley,              http://cg.cs.tu-berlin.de/~pooh
> TU Berlin, Computer Graphics and Computer Assisted Medicine research group
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