I did work on this a bit more yesterday for an upcoming post too.
But here is the python:
import clr
clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import Viewport, XYZ
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
def CenterViewTitle(viewport, offset = 0, location = "Center"):
TransactionManager.Instance.EnsureInTransaction(doc)
# set label line length to 0 to get approximate length by bounding box
viewport.LabelOffset = XYZ.Zero
viewport.LabelLineLength = 0
labelOutline = viewport.GetLabelOutline()
width = labelOutline.MaximumPoint.X - labelOutline.MinimumPoint.X
# set the label line to the length
viewport.LabelLineLength = width
#viewport box center for X value
boxCenter = viewport.GetBoxCenter()
bottomLeft = viewport.GetBoxOutline().MinimumPoint
topRight = viewport.GetBoxOutline().MaximumPoint
#build new location
calculatedCenter = boxCenter.Subtract(bottomLeft)
newLocation = XYZ(0,offset,0)
if location == "Left":
newLocation = XYZ(0,offset,0)
if location == "Center":
newLocation = XYZ(calculatedCenter.X,offset,0)
if location == "Right":
rightX = topRight.X - bottomLeft.X - width
newLocation = XYZ(rightX,offset,0)
viewport.LabelOffset = newLocation
TransactionManager.Instance.TransactionTaskDone()
return viewport
#Preparing input from dynamo to revit
items = UnwrapElement(IN[0])
offset = IN[1]
location = IN[2]
# return the results
if isinstance(IN[0], list): OUT = [CenterViewTitle(x,offset,location) for x in items]
else: OUT = CenterViewTitle(items,offset,location)
and the location is now controlled with this node:
