[vtkusers] Cut through FE-vtkUnstructuredGrid and show vectorarrows on cuttingplane

[rempler at mechbau.uni-stuttgart.de]

hi list,

i want to visualize a cut through some FE-data using a
vtkUnstructuredGrid() to store the geometry and a vtkFloatArray() to
store vectors like displacement etc... and here's already my problem:
vtkCutter()/vtkClipPolyData() need polydata for input and vtkGlyph3D()
uses datasets...
right now i've got three pipelines producing three actors - two for the
cut/cuttingplane and the third one for the vectorarrows using vtkGlyph3D():

-------------------------------------------------------------------
first two pipelines:
vtkUnstructuredGrid()
-> vtkGeometryFilter()
-> vtkClipPolyData()
-> vtkPolyDataMapper()
-> vtkActor()
vtkUnstructuredGrid()
-> vtkCutter()
-> vtkPolyDataMapper()
-> vtkActor()

-------------------------------------------------------------------
third pipeline:
vtkUnstructuredGrid()
-> vtkAssignAttribute() - ('FIRST_VECTOR', 'VECTORS', 'POINT_DATA')
-> vtkGlyph3D()
-> vtkPolyDataMapper()
-> vtkActor()

is there a way to connect these three pipelines so that a glyphactor
would only show vectorarrows on the points left over by the cut - like
using the output produced by vtkClipPolyData() and vtkCutter() to
visualize the arrows on the cuttingplane/cut-through-grid with vtkGlyph3D()?
i managed to cut through the glyphactor with:

-------------------------------------------------------------------
vtkUnstructuredGrid()
-> vtkAssignAttribute() - ('FIRST_VECTOR', 'VECTORS', 'POINT_DATA')
-> vtkGlyph3D()
-> vtkClipPolyData()
-> vtkPolyDataMapper()
-> vtkActor()

but that's not really cool cause the arrows get also cut...
i'm grateful for any ideas


greetings
uwe