Mirror with any plane (part wb)

[Vincent B]

How to mirror an object with any plane (or datum plane) in part wb?
Or this feature is missing?

[Roy_043]

You can change the Normal of the plane in the properties later. Or use Draft_Mirror.

[Vincent B]

Not easy to get the normal vector.

[Roy_043]

I agree.

[mario52]

hi

Macro_Normal_Vector

Code: Select all

Gui.Selection.getSelectionEx()[0].SubObjects[0].Faces[0].normalAt(0,0)

mario

[chrisb]

Code: Select all

Gui.Selection.getSelectionEx()[0].SubObjects[0].Faces[0].normalAt(0,0)

While I can use an expression for the placement, I didn's succeed with the normal vector. Does anyone know how to do that?

[edwilliams16]

If you have an xy plane, then Placement.Rotation(Vector(0,0,1), NormalVector) will rotate it into the NormalVector direction.

[openBrain]

Makes me think to this old topic : https://forum.freecadweb.org/viewtopic. ... 88#p325356

[chrisb]

If you have an xy plane, then Placement.Rotation(Vector(0,0,1), NormalVector) will rotate it into the NormalVector direction.

I failed to use this as an Expression for the normal vector, probably due to the function call. How is it possible - if at all?

Edit: Have to check openBrain's/GlouGlou's example.

[chrisb]

Makes me think to this old topic : https://forum.freecadweb.org/viewtopic. ... 88#p325356

Thanks for the trick with the line indicating the direction
As a simplification it is possible to use for the Base of the mirror a single expression: plane.Placement.Base.