here is a link to SketchUp API for faces. If you can. Get the SketchUp face for an OpenStudio surface then you can call face.edges.

I have a ruby method native to OpenStudio that I made to get the perimeter of a building. I made fake edges to accomplish that. I'll add that method to this answer later tonight.

# currently takes in model and checks for edges shared by a ground exposed floor and exterior exposed wall. Later could be updated for a specific story independent of floor boundary condition.

```
def OsLib_Geometry.calculate_perimeter(model)
perimeter = 0
model.getSpaces.each do |space|
# counter to use later
edge_hash = {}
edge_counter = 0
space.surfaces.each do |surface|
# get vertices
vertex_hash = {}
vertex_counter = 0
surface.vertices.each do |vertex|
vertex_counter += 1
vertex_hash[vertex_counter] = [vertex.x,vertex.y,vertex.z]
end
# make edges
counter = 0
vertex_hash.each do |k,v|
edge_counter += 1
counter += 1
if vertex_hash.size != counter
edge_hash[edge_counter] = [v,vertex_hash[counter+1],surface,surface.outsideBoundaryCondition,surface.surfaceType]
else # different code for wrap around vertex
edge_hash[edge_counter] = [v,vertex_hash[1],surface,surface.outsideBoundaryCondition,surface.surfaceType]
end
end
end
# check edges for matches (need opposite vertices and proper boundary conditions)
edge_hash.each do |k1,v1|
next if v1[3] != "Ground" # skip if not ground exposed floor
next if v1[4] != "Floor"
edge_hash.each do |k2,v2|
next if v2[3] != "Outdoors" # skip if not exterior exposed wall (todo - update to handle basement)
next if v2[4] != "Wall"
# see if edges have same geometry
next if not v1[0] == v2[1] # next if not same geometry reversed
next if not v1[1] == v2[0]
point_one = OpenStudio::Point3d.new(v1[0][0],v1[0][1],v1[0][2])
point_two = OpenStudio::Point3d.new(v1[1][0],v1[1][1],v1[1][2])
length = OpenStudio::Vector3d.new(point_one - point_two).length
perimeter += length
end
end
end
return perimeter
end
```

comment cancelled

What do you need in an edge beyond the two endpoints?

@

AmirRoth: I need to give them properties like first of all an ID like the normal IDF object Handles and also I need to know which surfaces includes the edge and several other stuff. I can of course do this on my own but if there be a chance to use the Edges my life will be a lot easierI think you will need to roll this on your own.