FreeCAD-macros

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# -*- coding: utf-8 -*-
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# Opens current visible objects in Slic3r. One can use different slicing software
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__Title__ = '3D Print / Slice'
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__Author__ = 'Damian Łoziński'
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__Version__ = '0.4.1'
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__Date__ = '2024-08-28'
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__Comment__ = 'Export selected objects to amf/stl files and open them in slicing program'
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__Web__ = 'https://github.com/dlozinski/FreeCAD-macros/blob/doc/ImportExport/ExportToSlicer.md'
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__Wiki__ = ''
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__Icon__ = 'Export2Slicer.png'
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__Help__ = 'You may need to change slicer path. To do so open Tools > Edit parameters > BaseApp/Preferences/Macros/Export2Slicer'
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__Status__ = 'Stable'
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__Requires__ = 'freecad 0.17+'
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__Communication__ = 'lozinski dot d at gmail dot com'
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__Files__ = 'Export2Slicer.png'
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import os
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import re
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from subprocess import Popen
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import shlex
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import FreeCAD as app
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import FreeCADGui as gui
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import Mesh
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import MeshPart
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MACRO_PARAMS = app.ParamGet('User parameter:BaseApp/Preferences/Macros/Export2Slicer')
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DEFAULT_SLICER_CMD = '"/Applications/Original Prusa Drivers/PrusaSlicer.app/Contents/MacOS/PrusaSlicer" --single-instance "{file}"'
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DEFAULT_OUTPUT_FORMAT = 'amf'
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DEFAULT_ANGULAR_DEFLECTION = 0.07
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def get_string_param(name, default):
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    value = MACRO_PARAMS.GetString(name)
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    if not value:
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        MACRO_PARAMS.SetString(name, default)
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        value = default
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    return value
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def get_float_param(name, default):
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    value = MACRO_PARAMS.GetFloat(name)
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    if not value:
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        MACRO_PARAMS.SetFloat(name, default)
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        value = default
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    return value
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slicer_cmd = get_string_param('SlicerCommand', DEFAULT_SLICER_CMD)
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output_format = get_string_param('OutputFormat', DEFAULT_OUTPUT_FORMAT)
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angular_deflection = get_float_param('AngularDeflection', DEFAULT_ANGULAR_DEFLECTION)
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def escape(text):
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    return re.sub(r'\W', '_', text)
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def get_mesh_filename(doc_filename, mesh_names):
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    """Returns valid filename for temporary mesh file."""
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    if doc_filename:
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        dirname = os.path.dirname(doc_filename)
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        filename = (
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            os.path.basename(doc_filename).partition('.')[0]
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            + '-'
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            + escape('_'.join(mesh_names))
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            + '.'
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            + output_format)
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        file_path = os.path.join(dirname, filename)
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    else:
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        file_path = 'meshes-export.' + output_format
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    return file_path
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def main():
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    doc = app.activeDocument()
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    if not doc:
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        raise RuntimeError('Export2Slicer: No active document')
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    selection = gui.Selection.getSelectionEx()
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    objects_to_export = [x.Object for x in selection] or [doc.ActiveObject]
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    try:
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        # Create temporary doc to store meshes so that we don't affect current doc history
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        tmp_doc = app.newDocument('meshes_to_export', temp=True)
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        meshes = []
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        mesh_names = []
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        for o in objects_to_export:
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            if o.TypeId == 'Mesh::Feature':
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                meshes.append(o)
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            else:
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                mesh = tmp_doc.addObject('Mesh::Feature', f'{doc.Label}_{o.Label}')
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                mesh.Mesh = MeshPart.meshFromShape(o.Shape, LinearDeflection=0.1, AngularDeflection=angular_deflection, Relative=False)
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                meshes.append(mesh)
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                mesh_names.append(o.Label)
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        if meshes:
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            mesh_path = get_mesh_filename(doc.FileName, mesh_names)
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            Mesh.export(meshes, mesh_path)
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        else:
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            raise RuntimeError('Export2Slicer: No objects to export')
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    finally:
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        app.closeDocument('meshes_to_export')
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        for x in selection:
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            gui.Selection.addSelection(doc.Name, x.ObjectName)
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    # Launch Slicer with meshes
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    Popen(shlex.split(slicer_cmd.format(file=mesh_path)))
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    app.Console.PrintMessage(f'Export2Slicer: Objects exported into: {mesh_path}\n')
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try:
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    main()
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except Exception as e:
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    app.Console.PrintError('Export2Slicer: ERROR: {}\n'.format(e))
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