Freecad Scripts

import FreeCAD          # Core module (also aliased as 'App')
import FreeCADGui       # GUI module (also aliased as 'Gui') — only in GUI mode
import Part             # Part workbench — BRep/OpenCASCADE shapes
import Mesh             # Mesh workbench — triangulated meshes
import Sketcher         # Sketcher workbench — 2D constrained sketches
import Draft            # Draft workbench — 2D drawing tools
import Arch             # Arch/BIM workbench
import Path             # Path/CAM workbench
import FEM              # FEM workbench
import TechDraw         # TechDraw workbench (replaces Drawing)
import BOPTools         # Boolean operations
import CompoundTools    # Compound shape utilities

# Create or access a document
doc = FreeCAD.newDocument("MyDoc")
doc = FreeCAD.ActiveDocument

# Add objects
box = doc.addObject("Part::Box", "MyBox")
box.Length = 10.0
box.Width = 10.0
box.Height = 10.0

# Recompute
doc.recompute()

# Access objects
obj = doc.getObject("MyBox")
obj = doc.MyBox  # Attribute access also works

# Remove objects
doc.removeObject("MyBox")

import FreeCAD

# Vectors
v1 = FreeCAD.Vector(1, 0, 0)
v2 = FreeCAD.Vector(0, 1, 0)
v3 = v1.cross(v2)          # Cross product
d = v1.dot(v2)              # Dot product
v4 = v1 + v2                # Addition
length = v1.Length           # Magnitude
v_norm = FreeCAD.Vector(v1)
v_norm.normalize()           # In-place normalize

# Rotations
rot = FreeCAD.Rotation(FreeCAD.Vector(0, 0, 1), 45)  # axis, angle(deg)
rot = FreeCAD.Rotation(0, 0, 45)                       # Euler angles (yaw, pitch, roll)

# Placements (position + orientation)
placement = FreeCAD.Placement(
    FreeCAD.Vector(10, 20, 0),    # translation
    FreeCAD.Rotation(0, 0, 45),   # rotation
    FreeCAD.Vector(0, 0, 0)       # center of rotation
)
obj.Placement = placement

# Matrix (4x4 transformation)
import math
mat = FreeCAD.Matrix()
mat.move(FreeCAD.Vector(10, 0, 0))
mat.rotateZ(math.radians(45))

import FreeCAD
import Part

# --- Primitive Shapes ---
box = Part.makeBox(10, 10, 10)               # length, width, height
cyl = Part.makeCylinder(5, 20)               # radius, height
sphere = Part.makeSphere(10)                  # radius
cone = Part.makeCone(5, 2, 10)               # r1, r2, height
torus = Part.makeTorus(10, 2)                 # major_r, minor_r

# --- Wires and Edges ---
edge1 = Part.makeLine((0, 0, 0), (10, 0, 0))
edge2 = Part.makeLine((10, 0, 0), (10, 10, 0))
edge3 = Part.makeLine((10, 10, 0), (0, 0, 0))
wire = Part.Wire([edge1, edge2, edge3])

# Circles and arcs
circle = Part.makeCircle(5)                   # radius
arc = Part.makeCircle(5, FreeCAD.Vector(0, 0, 0),
                       FreeCAD.Vector(0, 0, 1), 0, 180)  # start/end angle

# --- Faces ---
face = Part.Face(wire)                        # From a closed wire

# --- Solids from Faces/Wires ---
extrusion = face.extrude(FreeCAD.Vector(0, 0, 10))       # Extrude
revolved = face.revolve(FreeCAD.Vector(0, 0, 0),
                         FreeCAD.Vector(0, 0, 1), 360)    # Revolve

# --- Boolean Operations ---
fused = box.fuse(cyl)           # Union
cut = box.cut(cyl)              # Subtraction
common = box.common(cyl)        # Intersection
fused_clean = fused.removeSplitter()  # Clean up seams

# --- Fillets and Chamfers ---
filleted = box.makeFillet(1.0, box.Edges)          # radius, edges
chamfered = box.makeChamfer(1.0, box.Edges)        # dist, edges

# --- Loft and Sweep ---
loft = Part.makeLoft([wire1, wire2], True)          # wires, solid
swept = Part.Wire([path_edge]).makePipeShell([profile_wire],
                                              True, False)  # solid, frenet

# --- BSpline Curves ---
from FreeCAD import Vector
points = [Vector(0,0,0), Vector(1,2,0), Vector(3,1,0), Vector(4,3,0)]
bspline = Part.BSplineCurve()
bspline.interpolate(points)
edge = bspline.toShape()

# --- Show in document ---
Part.show(box, "MyBox")    # Quick display (adds to active doc)
# Or explicitly:
doc = FreeCAD.ActiveDocument or FreeCAD.newDocument()
obj = doc.addObject("Part::Feature", "MyShape")
obj.Shape = box
doc.recompute()

shape = obj.Shape

# Access sub-elements
shape.Vertexes    # List of Vertex objects
shape.Edges       # List of Edge objects
shape.Wires       # List of Wire objects
shape.Faces       # List of Face objects
shape.Shells      # List of Shell objects
shape.Solids      # List of Solid objects

# Bounding box
bb = shape.BoundBox
print(bb.XMin, bb.XMax, bb.YMin, bb.YMax, bb.ZMin, bb.ZMax)
print(bb.Center)

# Properties
shape.Volume
shape.Area
shape.Length       # For edges/wires
face.Surface       # Underlying geometric surface
edge.Curve         # Underlying geometric curve

# Shape type
shape.ShapeType    # "Solid", "Shell", "Face", "Wire", "Edge", "Vertex", "Compound"

import Mesh

# Create mesh from vertices and facets
mesh = Mesh.Mesh()
mesh.addFacet(
    0.0, 0.0, 0.0,   # vertex 1
    1.0, 0.0, 0.0,   # vertex 2
    0.0, 1.0, 0.0    # vertex 3
)

# Import/Export
mesh = Mesh.Mesh("/path/to/file.stl")
mesh.write("/path/to/output.stl")

# Convert Part shape to Mesh
import Part
import MeshPart
shape = Part.makeBox(1, 1, 1)
mesh = MeshPart.meshFromShape(Shape=shape, LinearDeflection=0.1,
                                AngularDeflection=0.5)

# Convert Mesh to Part shape
shape = Part.Shape()
shape.makeShapeFromMesh(mesh.Topology, 0.05)  # tolerance
solid = Part.makeSolid(shape)

### Draft Module

```python
import Draft
import FreeCAD

# 2D shapes
line = Draft.makeLine(FreeCAD.Vector(0,0,0), FreeCAD.Vector(10,0,0))
circle = Draft.makeCircle(5)
rect = Draft.makeRectangle(10, 5)
poly = Draft.makePolygon(6, radius=5)   # hexagon

# Operations
moved = Draft.move(obj, FreeCAD.Vector(10, 0, 0), copy=True)
rotated = Draft.rotate(obj, 45, FreeCAD.Vector(0,0,0),
                        axis=FreeCAD.Vector(0,0,1), copy=True)
scaled = Draft.scale(obj, FreeCAD.Vector(2,2,2), center=FreeCAD.Vector(0,0,0),
                      copy=True)
offset = Draft.offset(obj, FreeCAD.Vector(1,0,0))
array = Draft.makeArray(obj, FreeCAD.Vector(15,0,0),
                         FreeCAD.Vector(0,15,0), 3, 3)

import FreeCAD
import Part

class MyBox:
    """A custom parametric box."""

    def __init__(self, obj):
        obj.Proxy = self
        obj.addProperty("App::PropertyLength", "Length", "Dimensions",
                         "Box length").Length = 10.0
        obj.addProperty("App::PropertyLength", "Width", "Dimensions",
                         "Box width").Width = 10.0
        obj.addProperty("App::PropertyLength", "Height", "Dimensions",
                         "Box height").Height = 10.0

    def execute(self, obj):
        """Called on document recompute."""
        obj.Shape = Part.makeBox(obj.Length, obj.Width, obj.Height)

    def onChanged(self, obj, prop):
        """Called when a property changes."""
        pass

    def __getstate__(self):
        return None

    def __setstate__(self, state):
        return None


class ViewProviderMyBox:
    """View provider for custom icon and display settings."""

    def __init__(self, vobj):
        vobj.Proxy = self

    def getIcon(self):
        return ":/icons/Part_Box.svg"

    def attach(self, vobj):
        self.Object = vobj.Object

    def updateData(self, obj, prop):
        pass

    def onChanged(self, vobj, prop):
        pass

    def __getstate__(self):
        return None

    def __setstate__(self, state):
        return None


# --- Usage ---
doc = FreeCAD.ActiveDocument or FreeCAD.newDocument("Test")
obj = doc.addObject("Part::FeaturePython", "CustomBox")
MyBox(obj)
ViewProviderMyBox(obj.ViewObject)
doc.recompute()