How to Get Edge References (for Dimensioning)

Packages
8

Alright, so give me a day and a crash course in Python and we’ll see what we can do.
The revised platonic version of the python script that can get edges and respective references for a group or single object is below:

#Alban de Chasteigner 2019
#twitter : @geniusloci_bim
#geniusloci.bim@gmail.com
#Edited By: Daniel Masten 2022

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

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

items = UnwrapElement(IN[0]) if isinstance(IN[0],list) else [UnwrapElement(IN[0])]

allEdges,allReferences=[],[]

opt = Options()
opt.ComputeReferences = True
#opt.IncludeNonVisibleObjects = True
#opt.View = doc.ActiveView
for item in items:
	for obj in item.get_Geometry(opt):
		if isinstance(obj, Solid):
			elmtEdges,elmtReferences=[],[]
			for edges in obj.Edges:
				elmtEdges.append(edges.AsCurve().ToProtoType())
				elmtReferences.append(edges.Reference)
			allEdges.append(elmtEdges)
			allReferences.append(elmtReferences)
		
if isinstance(IN[0], list): OUT = allEdges,allReferences
else: OUT = allEdges[0],allReferences[0]

Here is the custom node:
EdgeReferences.dyf (9.7 KB)

For the editors of Dynamo OOTB nodes I have two recommendations:

  1. The node ‘ElementCurveReference.ByCurve’ needs to be modified so that it can accept edge curves that are in fact derived from revit faces. If the node ‘ElementFaceReference.BySurface’ can get a face reference from a surface, then curve references should be able to be extracted from that same surface’s edges too.
  2. It may be helpful to extract edge curves from an element directly, and it would make sense to do it with the 'Element.Curves node:
    image
    image989×844 50.4 KB

    If faces can be extracted from an element, lets be able to get those edges too.
    Thanks.