In FreeCAD, Placement defines an object's position and rotation. The Placement concept is explained in detail here: Placement.
Example of setting a document object's Placement:
myObj = FreeCAD.ActiveDocument.ActiveObject
pl = FreeCAD.Placement()
pl.move(FreeCAD.Vector(2,0,0))
myObj.Placement = pl
Placement( ) or (Placement) or (Matrix) or (Base, Rotation) or (Base,Rotation,Center) or (Base,Axis,Angle)Description: Constructs a placement, empty or with the given arguments, or as a copy of the given placement.
BaseReturns: a vector representing the Placement's position.
RotationReturns: a quaternion representing the Placement's rotation.
inverse( )Description: computes the inverse placement
Returns: a placement.
move(Vector)Description: moves the Placement along the given vector
Returns: nothing
multVec(Vector)Description: applies the Placement to the given vector
Returns: the resulting vector.
multiply(Placement)Description: multiplies this placement with another one
Returns: the resulting placement.
toMatrix( )Description:
Returns: a matrix representing the Placement's transformation.
This page is retrieved from https://wiki.freecad.org/Placement_API