PathMillFace : set/change Base property (without GUI)

[cristian.a73]

Hi FreeCAD Forumer
In my code, in order to create a PathMillFace I do :

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from PathScripts import PathMillFace

objFaceMill = PathMillFace.Create("FaceMill")
objFaceMill.Base = [ ( glPartObj, ( 'Face50' ) ) ]
objFaceMill.recompute()

this work fine,,,but when I need to work on Shape.Faces[x] cannot get the face name...so

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	face = myShape.Faces[...]
	objFaceMill.Base = [ ( checkObj, ( face ) ) ]

doesn't work because face must be a string array (not face array)


changing the file PathMillFace.py (row 81) to

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if isinstance(s, str):
	sublist.append(o.Shape.getElement(s))
else:
	sublist.append(s)

and row 103

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if isinstance(sub, str):
	shape = getattr(b[0].Shape, sub)
else:
	shape = sub

doen't solve

Does anyone have any idea ?

[mlampert]

you should use PathOp.addBase(...)

[cristian.a73]

you should use PathOp.addBase(...)

ok, but doesn't solve...it still need a face name even <Part.Face>


This code work, but.... is it a best practice ?!

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def get_face_name(s, source_face):
    source_face_hcode = source_face.hashCode()
    for iFace in range(0, len(s.Faces)):
        fname = "Face"+str(iFace+1)
        f = None
        try:
            f = getattr(s, fname)
        except Exception as e: 
            ''' '''
        if f:
            if source_face_hcode == f.hashCode():
                return fname
    return None

[mlampert]

you should use PathOp.addBase(...)

ok, but doesn't solve...it still need a face name even <Part.Face>

You'll always need a face name, that's how FreeCAD and its properties works. The face names are generated internally and there are some issues with determinism. If you want to know more search for "topological naming" and you'll find a lot of ... comments ... pain ... tries and failures ... it's an active field of research.

I would recommend to find the top face(s) by iterating through all faces and looking at their attributes - I presume you know which faces are eligible for face milling.

[cristian.a73]

You'll always need a face name, that's how FreeCAD and its properties works. The face names are generated internally and there are some issues with determinism. If you want to know more search for "topological naming" and you'll find a lot of ... comments ... pain ... tries and failures ... it's an active field of research.

I would recommend to find the top face(s) by iterating through all faces and looking at their attributes - I presume you know which faces are eligible for face milling.

Yes, I know which faces to pass to Path.MillFace
If faces name is the way to code, and it's generated internally in non deterministic mode, really don't understand : why Face.Name property doesn't exist ??