Replacing a Cut Portion of a Closed Mesh with a Plane

[jeahyuklee]

Hello!

Your previous suggestion to use the fixUndercuts function was very helpful to me.

This time, I would like to cut a closed mesh with a plane, replace the cut portion with the plane, and generate a new mesh with the remaining part.

Could you please recommend a method or function that can achieve this?

Thank you!

[Grantim]

Hello!

Please try code like this (note that in following release some signatures will be changed):

from meshllib import mrmeshpy as mm

mesh = mm.loadMesh("path/to/mesh.stl")
plane = mm.Plane3f()
plane.n = mm.Vector3f(0,0,1) # normal
plane.d = 0 # shift along normal
mm.cutMeshWithPlane( mesh, plane )
for e in mesh.topology.findHoleRepresentiveEdges():
    fParams = mm.FillHoleParams()
    fParams.metric = mm.getPlaneFillMetric( mesh, e )
    mm.fillHole( mesh, e, fParams )

mm.saveMesh( mesh, "path/to/export_mesh.stl" )