[vtkusers] slice structured grid with polydata

Justin Weber onlyjus at gmail.com
Thu Feb 18 22:08:14 EST 2016

I would like to generate a "cutcell" mesh using vtk by slicing a structured
grid with polydata loaded from a STL file. The resulting mesh would be an
unstructured grid.

Are there any tools in vtk to accomplish this?

I can create the structured grid and polydata successfully. Now I just need
an algorithm to slice the structured mesh with the polydata surface.

In my searching I could not find anything. However, I could accomplish this
by ray casting to find the intersections between the structured grid and
the polydata. Then using those points to create the unstructured grid.

See attached 2d sketch.

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