clip along contour line

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clip along contour line

Dean Inglis-2

is there an example or can someone suggest a pipeline
that would enable clipping an arbitrary (irregular) triangular surface mesh with
a closed loop?  the problem involves drawing a contour with
vtkContourWidget using vtkPolygonalSurfacePointPlacer
to place nodes on a vtkPolyData mesh such that the resulting
contour forms a closed path on the surface of the mesh.
A simple analogy would be to have an un-capped cylinder,
draw an uneven line around its circumference, then clip the
cylinder so that it can be separated along the line.  The final cutting edge
should also split triangles along the line.

- Dean

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