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[OpenFOAM] Clip by an stl file

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Old   October 15, 2019, 16:21
Default Clip by an stl file
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Hello everyone,

is possible to clip my data using an STL file? At the moment, I am using a programmable filter with a cylinder but I would like to replace the cylinder with an STL file or any other format that allows me to use an arbitrary geometry for clipping my original data.

Code:
import vtk
input = self.GetInputDataObject(0, 0)
inp_copy = input.NewInstance()
inp_copy.ShallowCopy(input)
inp_copy.UnRegister(None)
transf = vtk.vtkTransform()
transf.RotateX(90)
cyl = vtk.vtkCylinder()
cyl.SetCenter(0.05,0,-0)
cyl.SetRadius(0.0095)
cyl.SetTransform(transf)
clipper = vtk.vtkClipDataSet()
clipper.SetClipFunction(cyl)
clipper.SetInputData(inp_copy)
clipper.Update()
self.GetOutputDataObject(0).ShallowCopy(clipper.GetOutputDataObject(0))
Thanks,
Ryan
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Old   October 16, 2019, 08:56
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Carlo_P
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You can use a sampleDict file in openFOAM.
It will create some points on your .stl file and create some "sample" points.


{ // Sampling on triSurface type sampledTriSurfaceMesh; surface integrationPlane.stl; source boundaryFaces; // sample cells or boundaryFaces interpolate true; }


Here you can find the original file:


https://github.com/OpenFOAM/OpenFOAM...ple/sampleDict




Let me know if it can be ok.
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