Modifying material id for DirectShape/Python

Developers
,
1

Hi All,

A colleague of mine has imported 3D shapes (Brep as known by Dynamo) and I wish to modify the material on the surface. However, I have no luck in doing so. Hoping someone can help me with this.

ps revit’s paint option is out of the box as there are many elements in different locations.

image
image705×603 10.7 KB

`import clr
clr.AddReference(‘RevitAPI’)
clr.AddReference(‘RevitServices’)

from Autodesk.Revit.DB import FilteredElementCollector, ElementWorksetFilter, Options, Solid, OverrideGraphicSettings
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

Input: Workset ID and Material ID

workset_id = IN[0]
material_id = IN[1]

Get the current document

doc = DocumentManager.Instance.CurrentDBDocument

Create a filter for the workset

workset_filter = ElementWorksetFilter(workset_id)

Collect all elements in the workset

elements_in_workset = FilteredElementCollector(doc).WherePasses(workset_filter).WhereElementIsNotElementType().ToElements()

def GetFaces(direct_shape):
“”“Get all faces from a DirectShape element.”“”
faces =
geometry = direct_shape.get_Geometry(Options())
if geometry:
for geom in geometry:
if isinstance(geom, Solid):
for face in geom.Faces:
faces.append(face)
return faces

def SetMaterialOverride(element, material_id):
“”“Set the material override for an element.”“”
ogs = OverrideGraphicSettings()
ogs.SetSurfaceMaterialId(material_id)

TransactionManager.Instance.EnsureInTransaction(doc)
doc.ActiveView.SetElementOverrides(element.Id, ogs)
TransactionManager.Instance.TransactionTaskDone()

Initialize lists to store DirectShapes and their faces

direct_shapes =
faces_list =

Filter DirectShape elements and get their faces

for element in elements_in_workset:
if element.Name == ‘DirectShape’:
direct_shapes.append(element)
faces_list.append(GetFaces(element))

Set material override for each DirectShape element

for element in direct_shapes:
SetMaterialOverride(element, material_id)

Output the number of faces

OUT = len(faces_list)
`

1 Like
2 
import clr
clr.AddReference("RevitAPI")
clr.AddReference("RevitServices")

from Autodesk.Revit.DB import FilteredElementCollector, ElementWorksetFilter, Options, Solid, OverrideGraphicSettings
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

# Input: Workset ID and Material ID
workset_id = IN[0]
material_id = IN[1]

# Get the current document
doc = DocumentManager.Instance.CurrentDBDocument

# Create a filter for the workset
workset_filter = ElementWorksetFilter(workset_id)

# Collect all elements in the workset
elements_in_workset = FilteredElementCollector(doc).WherePasses(workset_filter).WhereElementIsNotElementType().ToElements()

def GetFaces(direct_shape):
"""Get all faces from a DirectShape element."""
    faces = []
    geometry = direct_shape.get_Geometry(Options())
    if geometry:
        for geom in geometry:
            if isinstance(geom, Solid):
                 for face in geom.Faces:
                    faces.append(face)
    return faces

def SetMaterialOverride(element, material_id):
"""Set the material override for an element."""
    ogs = OverrideGraphicSettings()
    ogs.SetSurfaceMaterialId(material_id)

TransactionManager.Instance.EnsureInTransaction(doc)
doc.ActiveView.SetElementOverrides(element.Id, ogs)
TransactionManager.Instance.TransactionTaskDone()
# Initialize lists to store DirectShapes and their faces
direct_shapes = []
faces_list = []

# Filter DirectShape elements and get their faces
for element in elements_in_workset:
    if element.Name == "DirectShape":
        direct_shapes.append(element)
        faces_list.append(GetFaces(element))

# Set material override for each DirectShape element
for element in direct_shapes:
    SetMaterialOverride(element, material_id)

# Output the number of faces
OUT = len(faces_list)

paste your code via </>

2 Likes
3

Hi Desmond, welcome to the forum :wave:
Your code is trying to do two things which are not connected - override an elements graphic settings in a view and change the material painted on the geometry faces

Based on your use case painting the faces is probably the best solution. I haven’t tried the code but it might look something like this

import clr

clr.AddReference("RevitAPI")
clr.AddReference("RevitServices")

from Autodesk.Revit.DB import (
    ElementWorksetFilter,
    FilteredElementCollector,
    Options,
    Solid,
    ViewDetailLevel,
)
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager


def GetFaces(direct_shape):
    """Get all faces from a DirectShape element."""
    options = Options()
    options.DetailLevel = ViewDetailLevel.Fine
    faces = []
    geometry = direct_shape.get_Geometry(options)
    if geometry:
        for geom in geometry:
            if isinstance(geom, Solid):
                for face in geom.Faces:
                    faces.append(face)
    return faces


# Input: Workset ID and Material ID
workset_id = IN[0]
material_id = IN[1]

# Get the current document
doc = DocumentManager.Instance.CurrentDBDocument

# Create a filter for the workset
workset_filter = ElementWorksetFilter(workset_id)

# Collect all elements in the workset
elements_in_workset = (
    FilteredElementCollector(doc)
    .WherePasses(workset_filter)
    .WhereElementIsNotElementType()
    .ToElements()
)

# Initialize lists to store DirectShapes and their faces
faces_list = []

TransactionManager.Instance.EnsureInTransaction(doc)
for element in elements_in_workset:
    if element.Name == "DirectShape":
        faces = GetFaces(element)
        for face in faces:
            doc.Paint(element.Id, face, material_id)
            faces_list.append(face)
TransactionManager.Instance.TransactionTaskDone()

# Output the number of faces
OUT = len(faces_list)
3 Likes
4

thanks, you are a legend

5

Hi @desmond679679 and welcome

For your information, here are the forum rules

(How to get help on the Dynamo forums ) and the community guidelines (https://forum.dynamobim.com/faq )

Note
remember to specify if it’s AI-generated code in your next posts (see point 8 )

1 Like