selection shape2DView

from FreeCAD import Base, Vector
import FreeCAD,FreeCADGui,Part
import Drawing

sel = FreeCADGui.Selection.getSelection()

for o in sel:
    solid = o.Shape


#get the outside shape of the profile:

proj = Part.Shape
[visibleG0,visibleG1,hiddenG0,hiddenG1] = Drawing.project(solid,Vector(0,0,-1))
proj = visibleG0
proj.rotate(Vector(0,0,0), Vector(0,1,0), 180)
outerProfile=FreeCAD.ActiveDocument.addObject("Part::Feature","Outside_Profile")
outerProfile.Shape = proj # <- outer profile

FreeCAD.activeDocument().recompute()

#select individual faces to get their profiles -for pockets and open pockets

objGeom=[]
s=Gui.Selection.getSelectionEx()
for i in s:
    for e in i.SubElementNames:
        objGeom.append(getattr(i.Object.Shape,e))

face = objGeom[0]

[visibleG0,visibleG1,hiddenG0,hiddenG1] = Drawing.project(face,Vector(0,0,-1))
proj2 = Part.Shape
proj2 = visibleG0
proj2.rotate(Vector(0,0,0), Vector(0,1,0), 180)
pocket =FreeCAD.ActiveDocument.addObject("Part::Feature","Pocket")
pocket.Shape = proj2
FreeCAD.activeDocument().recompute()