FreeCAD × Cura × Flatpak integration

Cura.FCMacro

# -*- coding: utf-8 -*-

import FreeCAD
import Mesh
import MeshPartGui, FreeCADGui
import MeshPart
import Mesh, Part, PartGui
import uuid
import subprocess


selection = FreeCADGui.Selection.getSelection()
files = []

for selected in selection:
    document = selected.Document
    shape = selected.Shape
    id = str(uuid.uuid4())
    mesh = selected.Document.addObject('Mesh::Feature', f'Mesh_{id}')

    mesh.Mesh = MeshPart.meshFromShape(Shape = shape, LinearDeflection = 0.1, AngularDeflection = 0.0523599, Relative = False)
    mesh.Label = selected.Label

    file = f'/tmp/{mesh.Label}_{id}.stl'

    print(f'Exporting {selected.Label} to {file}')
    Mesh.export([mesh], file)
    files.append(file)
    document.removeObject(mesh.Name)

subprocess.Popen(['flatpak-spawn', '--host', 'flatpak', 'run', 'com.ultimaker.cura', *files])

flatpak.sh

sudo flatpak override com.ultimaker.cura --filesystem=/tmp
sudo flatpak override org.freecadweb.FreeCAD --filesystem=/tmp
sudo flatpak override org.freecadweb.FreeCAD --talk-name=org.freedesktop.Flatpak

STL.FCMacro

# -*- coding: utf-8 -*-

import FreeCAD
import Mesh
import MeshPartGui, FreeCADGui
import MeshPart
import Mesh, Part, PartGui
import uuid
import os

selection = FreeCADGui.Selection.getSelection()

for selected in selection:
    document = selected.Document
    shape = selected.Shape
    id = str(uuid.uuid4())
    mesh = selected.Document.addObject('Mesh::Feature', f'Mesh_{id}')

    mesh.Mesh = MeshPart.meshFromShape(Shape = shape, LinearDeflection = 0.1, AngularDeflection = 0.0523599, Relative = False)
    mesh.Label = selected.Label

    file = os.path.join(os.path.dirname(document.FileName), f'{mesh.Label}_{id}.stl')

    print(f'Exporting {selected.Label} to {file}')
    Mesh.export([mesh], file)
    document.removeObject(mesh.Name)

This macro requires some overrides (flatpak.sh) to be able to start processes and access host /tmp directory.