Automatic pipe insulation

Revit API
1

Hello,
am trying to create a tool to automatically add insulation on objects. the goal is to add insulation depending on the value of the systeme type.
so far i’ve written this:

"# coding: utf-8
import clr
from rpw import revit
from Autodesk.Revit.UI.Selection import ObjectType
from Autodesk.Revit.DB.Plumbing import PipeInsulation
from Autodesk.Revit.DB import *
from pyrevit import forms
from pyrevit import DB

doc = revit.doc
uidoc = revit.uidoc

Demander à l’utilisateur de sélectionner des éléments

try:
with forms.WarningBar(title=“Sélectionnez les éléments à isoler”):
references = uidoc.Selection.PickObjects(ObjectType.Element)

# Choisir dynamiquement le type d'isolation
insulation_types = DB.FilteredElementCollector(doc).OfClass(DB.PipeInsulationType).ToElements()
type_choices = {i.Name: i.Id for i in insulation_types if i is not None}

selected_type = forms.SelectFromList.show(
    sorted(type_choices.keys()),
    title="Choisissez un type d'isolant",
    multiselect=False
)

if not selected_type:
    raise Exception("Aucun type d'isolant sélectionné.")

insulation_type_id = type_choices[selected_type]

# Demander l'épaisseur
thickness_input = forms.ask_for_string(
    default="0.03",  # ≈ 9 mm
    prompt="Entrez l'épaisseur (en pieds, ex : 0.03 pour 9 mm)",
    title="Épaisseur de l'isolant"
)

if not thickness_input:
    raise Exception("Épaisseur non définie.")

thickness = float(thickness_input)

# Démarrer la transaction
t = Transaction(doc, "Ajouter isolant aux éléments sélectionnés")
t.Start()

count = 0
for ref in references:
    element = doc.GetElement(ref.ElementId)
    if not element:
        continue

    # Vérifie s'il n'a pas déjà d'isolation
    existing = PipeInsulation.GetInsulationIds(element)
    if existing and len(existing) > 0:
        continue

    try:
        PipeInsulation.Create(doc, element.Id, insulation_type_id, thickness)
        count += 1
    except Exception as e:
        print("Erreur pour l'élément {} : {}".format(element.Id, e))

t.Commit()

forms.alert("{} isolants ajoutés avec succès.".format(count), title="Résultat", ok=True)

except Exception as e:
forms.alert(“Erreur : {}”.format(e), title=“Erreur”, ok=True)
"

But i keep having a mistake:

image
image368×207 7.12 KB

i’ve loooked throught the documentation of Revit API but haven’t been able to find a way.
Am not yet very goodd at programing so im asking here if someone could give me pointers on why i can’t access the insulation in the Modele.

2

Hello,

The error you’re getting is caused by 2 things:

  1. There is no need to write DB in this line:
insulation_types = DB.FilteredElementCollector(doc).OfClass(DB.PipeInsulationType).ToElements()

because you already imported everything from DB using *, in this line in your imports:

from Autodesk.Revit.DB import *

Corrected version:

insulation_types = FilteredElementCollector(doc).OfClass(PipeInsulationType).ToElements()

Also, because you already imported Autodesk.Revit.DB namespace, there is no need to import it again from pyrevit in this line:

from pyrevit import DB
  1. This line in your imports is incorrect:
from Autodesk.Revit.DB.Plumbing import PipeInsulation

Instead, try this:

from Autodesk.Revit.DB.Plumbing import PipeInsulationType

PipeInsulationType and PipeInsulation are two different classes:
PipeInsulationType - PipeInsulationType Class
PipeInsulation - PipeInsulation Class

In this line you are using PipeInsulationType:

insulation_types = DB.FilteredElementCollector(doc).OfClass(DB.PipeInsulationType).ToElements()

so it must be the same in the imports.

DB is a so called namespace. FilteredElementCollector comes directly from it.
PipeInsulationType isn’t included directly in the DB namespace, but another one, called Autodesk.Revit.DB.Plumbing, that’s why you have to import it explicitly.

image
image537×760 47.2 KB

I hope this helped and let me know if you have any questions!

3

Bad imports = code generated by AI

4

That’s also what I thought… However, I also used much more AI at the beginning and gradually started understanding more and more on my own, to the point of being able to write correct code without it. I think there is value in using AI while learning, the key is to only use it as one of the learning resources and not rely too much on it

1 Like
5

Not always true, but ChatGPT free is good at messing up !