How to set BoundingBox to Instances, instead of ProjectOrigin?

[Draxl_Andreas]

Hello,

How can i set my Boundingbox to my Elements(red) instead of the origin coordinate system.

or alternativly, can i rotate it corresponding to the angle ? is there a workflow…

KR
Andreas

[jacob.small]

Get the bounding box of the family symbol which should be at the origin, convert that to a cuboid and transform it by the family instances coordinate system.

[Draxl_Andreas]

@jacob.small ,

how to get origins and “local” orientations? it is still “global”

import sys
import clr

clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import *
from Autodesk.Revit.DB.Structure import *

clr.AddReference('RevitAPIUI')
from Autodesk.Revit.UI import *

clr.AddReference('System')
from System.Collections.Generic import List

clr.AddReference('RevitNodes')
import Revit
clr.ImportExtensions(Revit.GeometryConversion)
clr.ImportExtensions(Revit.Elements)

clr.AddReference('RevitServices')
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

doc = DocumentManager.Instance.CurrentDBDocument
uidoc=DocumentManager.Instance.CurrentUIApplication.ActiveUIDocument

#Preparing input from dynamo to revit
elements = UnwrapElement(IN[0])

output = []

for i in elements:
	output.append(i.Symbol)

OUT = output

KR

Andreas

[christian.stan]

hello, I think Mr. Jacob means getting the x and y from the wall at the local point where your family instance is located
then make the transformation

Cordially
christian.stan

[Draxl_Andreas]

@christian.stan ,

to get host can be usefull… but it is still not working, and “symbol” does not work for the task…

KR

Andreas

[christian.stan]

I tried via another track, I attach script if interested (Should not be super optimized yet)
30 Avril Forum anglais rep bb.dyn (53.0 KB)

Cordially
christian.stan

[jacob.small]

You need to build the coordinate system. Some guidance:

• FamilyInstance.FacingOrientation will give you the Y vector of the instance for the coordinate system.

• The Z vector is vertical in this case so we can use Vector.ZAxis for the Z axis of the coordinate system.

• The X axis of the coordinate system is the cross of the Y and Z.

• The coordinate system’s location is the location of the family instance.

[MartinVrielink]

Hi,

I did something similar but then with walls.
The idea should be the same for family instances.

Edit:
Finally I ended up here to fix the problem: Youtube
That seems to be more effiecient

Kind Regards,

Martin