Relationship center of rotation Getlocation?

Revit
1

hi, I thought that the location point was center of rotation (obviously wrong considering the example)

Do you think it comes from family or bad certainty on my part?

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image1534×618 120 KB

thanks in advance

edit: Here are the 2 families:
ALPHI_PP_R.rfa (804 KB)
ALPHI_ST.rfa (844 KB)

Sincerely
christian.stan

2

I found a workaround with ElementTransformUtils class and Rotate Element method

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image1475×449 56.9 KB

RevitBoilerplate code +

elt=UnwrapElement(IN[0])
ang=IN[1]
loc=elt.Location.Point
Line_axis=Line.CreateBound(loc,XYZ(loc.X,loc.Y,1))

TransactionManager.Instance.EnsureInTransaction(doc)
ElementTransformUtils.RotateElement(doc,elt.Id,Line_axis,math.pi*ang/180)
TransactionManager.Instance.TransactionTaskDone()

OUT = elt

Looks like FamilyInstance.SetRotation uses a boundingbox
(If any of you can confirm this, thank you)
Sincerely
christian.stan

1 Like
3

Hi,
I have a curious thing that happens, it may come from my def which is not good
I do not know.

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image1498×781 171 KB

image
image1159×740 8.21 KB

a missing beam yet 28 elts

#######OK NOW YOU CAN CODE########
elt=UnwrapElement(IN[0])
ang=IN[1]
def r_cent_l(i,a):
    loc=i.Location.Point
    Line_axis=Line.CreateBound(loc,XYZ(loc.X,loc.Y,1))
    TransactionManager.Instance.EnsureInTransaction(doc)
    ElementTransformUtils.RotateElement(doc,i.Id,Line_axis,math.pi*a/180)
    TransactionManager.Instance.TransactionTaskDone()


z=[r_cent_l(e,ang) for e in elt]
OUT = z

By placing an end transaction node between Family instance and IN[0] of the python node
I have everything but I have jerky things (see gif)
question 5 novembre

I would look at an error in my python function
thanks in advance
best regards christian.stan