Script to import into FreeCAD for my keyboard project.

freecad-keyboard-import.py

from itertools import chain


spec = {"width": 76.9, "height": 117.7, "support_stems": [[19.2, -19.15], [-19.45, -19.1], [-19.35, 19.0]], "switches": [[9.53, 28.0], [-19.05, -48.2], [9.53, -48.2], [-9.53, 8.95], [-28.58, -10.1], [-9.53, -29.15], [-9.53, -10.1], [28.57, 28.0], [28.57, -38.67], [28.57, -0.57], [-28.58, 28.0], [9.53, -10.1], [-28.58, -29.15], [9.53, 8.95], [9.53, -29.15], [-28.58, 8.95], [-9.53, 28.0]], "diodes": [[-19.4, -56.6, 180.0], [10.2, -56.6, 180.0], [-27.5, 0.5, 180.0], [19.6, 4.3, 90.0], [-27.9, 19.65, 180.0], [-8.45, 0.5, 180.0], [10.0, -18.6, 180.0], [10.6, 0.5, 180.0], [-9.0, 19.65, 180.0], [-8.8, -18.6, 180.0], [10.2, 19.65, 180.0], [29.3, 19.7, 180.0], [-8.55, -37.65, 180.0], [19.6, -33.85, 90.0], [-27.6, -37.65, 180.0], [-28.0, -18.6, 180.0], [10.0, -37.65, 180.0]], "smd_cutouts": [[19.8, 19.8, 6.4, 8.0], [30.7, 17.8, 9.8, 6.0], [2.1, -38.5, 8.2, 4.2], [0.0, -32.0, 5.6, 8.8], [30.1, -19.6, 15.0, 7.6]]}

DIODE_LENGTH = 5
DIODE_WIDTH = 2
SMD_HEIGHT = 1.3


document = FreeCAD.ActiveDocument

# Remove all of bottom cutout objects
stems_container = document.getObjectsByLabel("BottomSupportStems")[0]
case_bottom_cutouts = document.getObjectsByLabel("CaseBottomCutouts")[0]
top_plate_cutouts = document.getObjectsByLabel("TopPlateCutouts")[0]
top_plate_smd_cutouts = document.getObjectsByLabel("TopPlateSMDCutouts")[0]

for container in chain((stems_container, case_bottom_cutouts, top_plate_cutouts, top_plate_smd_cutouts)):
	for child in container.getSubObjects():
		name = child.rstrip(".")
		document.removeObject(name)



# Create links for the stems
parent_stem = document.getObjectsByLabel("SupportStem")[0]
parent_stem_cutout = document.getObjectsByLabel("SupportStemCutout")[0]
parent_top_stem_cutout = document.getObjectsByLabel("SupportTopStemCutout")[0]
for i, stem in enumerate(spec['support_stems']):
	name = f'StemLink{i:03}'
	cutout_name = f'StemCutoutLink{i:03}'
	cutout_top_name = f'StemTopPlateCutoutLink{i:03}'
	x, y = stem

	# Create a new link for this stem object
	link = document.addObject('App::Link', name)
	link.setLink(parent_stem)
	link.Label = name
	link.Placement = App.Placement(App.Vector(x,y,0),App.Rotation(App.Vector(0,0,1),0))
	stems_container.addObject(link)

	# Create a new link for this stem cutout
	link = document.addObject('App::Link', cutout_name)
	link.setLink(parent_stem_cutout)
	link.Label = cutout_name
	link.Placement = App.Placement(App.Vector(x,y,0),App.Rotation(App.Vector(0,0,1),0))
	case_bottom_cutouts.addObject(link)

	# For the top plate cutout
	link = document.addObject('App::Link', cutout_top_name)
	link.setLink(parent_top_stem_cutout)
	link.Label = cutout_top_name
	link.Placement = App.Placement(App.Vector(x,y,0),App.Rotation(App.Vector(0,0,1),0))
	top_plate_cutouts.addObject(link)


# Create links for the switch cutouts
parent_switch = document.getObjectsByLabel("KeyCutout")[0]
parent_top_plate_cutout = document.getObjectsByLabel("TopPlateKeyCutout")[0]
for i, switch in enumerate(spec['switches']):
	name = f'SwitchLink{i:03}'
	top_plate_name = f'TopPlateLink{i:03}'
	x, y = switch

	# Create a new link for this switch cutout on the bottom plate
	link = document.addObject('App::Link', name)
	link.setLink(parent_switch)
	link.Label = name
	link.Placement = App.Placement(App.Vector(x,y,0),App.Rotation(App.Vector(0,0,1),0))
	case_bottom_cutouts.addObject(link)

	# And for the top plate
	link = document.addObject('App::Link', top_plate_name)
	link.setLink(parent_top_plate_cutout)
	link.Label = top_plate_name
	link.Placement = App.Placement(App.Vector(x,y,0),App.Rotation(App.Vector(0,0,1),0))
	top_plate_cutouts.addObject(link)

# Diode cubes
for i, diode in enumerate(spec['diodes']):
	name = f'DiodeTopPlateCutout{i:03}'
	x, y, rotation = diode

	cube = document.addObject("Part::Box", name)
	cube.Length = DIODE_LENGTH
	cube.Width = DIODE_WIDTH
	cube.Height = SMD_HEIGHT
	cube.Label = name
	cube.Placement = App.Placement(App.Vector(x,y,0),App.Rotation(App.Vector(0,0,1),rotation))
	top_plate_cutouts.addObject(cube)

# Surface mount cutout cubes
for i, cutout in enumerate(spec['smd_cutouts']):
	name = f'SmdTopPlateCutout{i:03}'
	x, y, length, width = cutout
	x -= length / 2
	y -= width / 2

	cube = document.addObject("Part::Box", name)
	cube.Length = length
	cube.Width = width
	cube.Height = SMD_HEIGHT
	cube.Label = name
	cube.Placement = App.Placement(App.Vector(x,y,0),App.Rotation(App.Vector(0,0,1),0))
	top_plate_smd_cutouts.addObject(cube)