# Wall vertices - in and out **URL:** \ **Category:** Revit\ **Created:** [August 21, 2024, 10:04am UTC](https://forum.dynamobim.com/t/wall-vertices-in-and-out/103710 "2024-08-21T10:04:59Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Alien](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/alien/32/40701_2.png) [@Alien](https://forum.dynamobim.com/u/Alien)\ **Post date:** [August 21, 2024, 10:05am UTC](https://forum.dynamobim.com/t/wall-vertices-in-and-out/103710/1 "2024-08-21T10:05:00Z")
I have some walls in Revit: ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/3/0/302f4302d2df7b6efa546af99c3bed58bf5eb0fd.png) I want to get the verticies of the walls - internal ones and external ones. Badly illustrated : ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/1/1/1185cb8faf24990f30e1e5579513dcbec2342472.png) maybe I could actually do it by using surfaces? Was trying to do it like this: ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/6/c/6cab2e864b66c679fc8cb43cac641bcf8f2efabd.jpeg) Anyone got any fun/ good suggestions? ---
**Author:** ![Alien](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/alien/32/40701_2.png) [@Alien](https://forum.dynamobim.com/u/Alien)\ **Post date:** [August 21, 2024, 10:54am UTC](https://forum.dynamobim.com/t/wall-vertices-in-and-out/103710/2 "2024-08-21T10:54:20Z")
![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/5/5/55d05514518cc74f6adf3d7fe5cfc524ba15b6f5.png) Trying it with geometry… Was looking promising. 1 - Joined all the lines up and grouped them for inner and outer walls (won’t work if any walls touch the outer wall though…) 2 - I thought the groups of lines would be simply divided by 2 to get inside and outside lines 3 - Nope, because I have different wall thicknesses in the outer walls the line lengths are not the same. I’m trying to grab start/end points and match but it’s going a bit slowly ☹ So… anyone got better suggestions I’ll happily hear them! ---
**Author:** ![jacob.small](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/jacob.small/32/161030_2.png) [@jacob.small](https://forum.dynamobim.com/u/jacob.small)\ **Post date:** [August 21, 2024, 11:29am UTC](https://forum.dynamobim.com/t/wall-vertices-in-and-out/103710/3 "2024-08-21T11:29:18Z")
Can you clarify which points you want to grab for a wall which starts on the exterior and runs into the interior? ---
**Author:** ![Alien](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/alien/32/40701_2.png) [@Alien](https://forum.dynamobim.com/u/Alien)\ **Post date:** [August 21, 2024, 11:32am UTC](https://forum.dynamobim.com/t/wall-vertices-in-and-out/103710/4 "2024-08-21T11:32:00Z")
That I don’t know… I’m just experimenting with the image I’ve currently drawn. I’ve shelved more difficult questions into, “will think about that… maybe… er… some other unspecified time” . Basically I want a list of vertices designating the outer boundary. And I want a core of some kind. ---
**Author:** ![jacob.small](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/jacob.small/32/161030_2.png) [@jacob.small](https://forum.dynamobim.com/u/jacob.small)\ **Post date:** [August 21, 2024, 11:35am UTC](https://forum.dynamobim.com/t/wall-vertices-in-and-out/103710/5 "2024-08-21T11:35:38Z")
This might be of use then, but it will get a single solid. Might have some link instances to convert to active model elements though. > [@Fill inside the builing and making it a single mass](https://forum.dynamobim.com/t/fill-inside-the-builing-and-making-it-a-single-mass/99164/15): > > This is interesting: Not sure how it will perform on larger projects, but speed is fine by me for smaller stuff. > > > **The Python Script** > > > > ######################################## ############## Properties ############## ######################################## \_\_author\_\_ = 'Jacob Small' \_\_version\_\_ = '0.1.0' \_\_description\_\_ = """ gets the solid mass of the building envelope """ \_\_RevitBuilds\_\_ = "2024.1" \_\_DynamoBuilds\_\_ = "2.18.1&… Note that it won’t grab the points on the inside of the wall by default, but you could create a thin shell of the solid with a reasonable inner offset and grab any point which intersects that should you want those. ---
**Author:** ![pyXam](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/pyxam/32/163009_2.png) [@pyXam](https://forum.dynamobim.com/u/pyXam)\ **Post date:** [August 21, 2024, 11:41am UTC](https://forum.dynamobim.com/t/wall-vertices-in-and-out/103710/6 "2024-08-21T11:41:05Z")
This is pretty hacky but it looks to get what your image shows. ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/f/0/f0559456f002f7bf00b9121f7d9d245b7f85e76f.png) > **Python Script** > > ```auto > 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])] > > allHorizEdges = [] > > opt = Options() > opt.ComputeReferences = True > > for item in items: > for obj in item.get_Geometry(opt): > if isinstance(obj, Solid): > horizEdges = [] > for edges in obj.Edges: > if round(edges.AsCurve().GetEndPoint(0).ToPoint().Z, 10) == round(edges.AsCurve().GetEndPoint(1).ToPoint().Z, 10): > horizEdges.append(edges.AsCurve().ToProtoType()) > if horizEdges: > minZ = min(edge.StartPoint.Z for edge in horizEdges) > lowestZEdges = [edge for edge in horizEdges if edge.StartPoint.Z == minZ] > allHorizEdges.append(lowestZEdges) > > if isinstance(IN[0], list): > OUT = filter(None, allHorizEdges) > else: > OUT = filter(None, allHorizEdges)[0] > > ``` ---
**Author:** ![Alien](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/alien/32/40701_2.png) [@Alien](https://forum.dynamobim.com/u/Alien)\ **Post date:** [August 21, 2024, 12:01pm UTC](https://forum.dynamobim.com/t/wall-vertices-in-and-out/103710/7 "2024-08-21T12:01:52Z")
![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/0/e/0e4501f76e829349e56055c5d740402812c0adb6.png) Amepersand \<3 What a glorious node!!