Updated Section Box

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1

Good day everyone,

Please read fully before suggesting custom packages to me chances are ive already tried them to no avail.

I am trying to make a 3d view with a section box applied to isolate a room for creating 3D Views for C Sheets however for some reason I cant get the section box to update in the new 3d view. The view I have been using has a section box applied to it already and it wont update I have also tried it with a 3d view without a section box applied and also doesnt work. I have tried every package under the sun and none seem to work for me hence why im asking for help from the big guns (the people in these forums)

I have attached the file so feel free to interrogate and alter.

Generate 3D View_script.dyn (76.6 KB)

2

It would be helpful if you shared a screenshot of your graph in action, with all node preview bubbles pinned and any warning messages you may be getting.

3

Hi Nick,

Im not getting any error messages its just simply not updating the section box but Ive attached a screenshot showing all node preview bubbles pinned as well as the custom Python code running in the graph.

Generate 3D View_script_2024-10-30_01-57-29
Generate 3D View_script_2024-10-30_01-57-297306×1390 663 KB

Custom Code Below:

# Import necessary modules from Revit and Dynamo
import clr
clr.AddReference('RevitAPI')
clr.AddReference('RevitServices')
clr.AddReference('RevitNodes')
clr.AddReference('RevitAPIUI')
clr.AddReference('ProtoGeometry')  # For converting Dynamo Points

from Autodesk.DesignScript.Geometry import Point as DSPoint  # Import Dynamo Point
from Autodesk.Revit.DB import XYZ, BoundingBoxXYZ, View3D
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

# Inputs from Dynamo
min_ds_point = IN[0]  # MinPoint (Dynamo's DesignScript Point or list of Points)
max_ds_point = IN[1]  # MaxPoint (Dynamo's DesignScript Point or list of Points)
views = IN[2]         # AxonometricView or list of views (Revit's View3D)

# Convert Dynamo DesignScript Points to Revit XYZ points
def convert_to_xyz(ds_point):
    if isinstance(ds_point, list):  # If it's a list, extract the first point
        ds_point = ds_point[0]
    return XYZ(ds_point.X, ds_point.Y, ds_point.Z)

# Convert min and max points from Dynamo to Revit XYZ
min_point = convert_to_xyz(min_ds_point)
max_point = convert_to_xyz(max_ds_point)

# Access the current Revit document
doc = DocumentManager.Instance.CurrentDBDocument

# Ensure views input is a list, even if a single item is provided
if not isinstance(views, list):
    views = [views]

# Debugging: Output values of MinPoint and MaxPoint to check their validity
OUT = ["Converted MinPoint: {}".format(min_point), "Converted MaxPoint: {}".format(max_point)]

# Function to validate and log bounding box
def validate_bounding_box(min_pt, max_pt):
    # Ensure MaxPoint > MinPoint in all axes
    if min_pt.X >= max_pt.X or min_pt.Y >= max_pt.Y or min_pt.Z >= max_pt.Z:
        raise Exception("Invalid bounding box: MaxPoint must be greater than MinPoint.")
    return True

# Function to debug the current section box values
def log_current_section_box(view):
    # Log the current section box of the view
    section_box = view.GetSectionBox()
    min_coords = (section_box.Min.X, section_box.Min.Y, section_box.Min.Z)
    max_coords = (section_box.Max.X, section_box.Max.Y, section_box.Max.Z)
    OUT.append("Current section box Min: {}, Max: {}".format(min_coords, max_coords))
    OUT.append("Current section box size: X: {}, Y: {}, Z: {}".format(
        max_coords[0] - min_coords[0],
        max_coords[1] - min_coords[1],
        max_coords[2] - min_coords[2]
    ))

# Start a transaction for modifying the Revit document
TransactionManager.Instance.EnsureInTransaction(doc)

try:
    for view in views:
        if isinstance(view, View3D):  # Ensure the object is a 3D view
            # Log current section box before applying the new one
            log_current_section_box(view)

            # Check if the section box is enabled in the view
            if not view.IsSectionBoxActive:
                view.IsSectionBoxActive = True  # Enable the section box if it's not already enabled

            # Validate the Min and Max points before applying them
            validate_bounding_box(min_point, max_point)

            # Create a new BoundingBoxXYZ with the MinPoint and MaxPoint
            section_box = BoundingBoxXYZ()
            section_box.Min = min_point
            section_box.Max = max_point

            # Explicitly apply the bounding box to the view's section box
            view.SetSectionBox(section_box)

            # Regenerate the document to apply the changes immediately
            doc.Regenerate()

            # Log new section box after applying it
            log_current_section_box(view)

finally:
    # Complete the transaction
    TransactionManager.Instance.TransactionTaskDone()

# Output (optional)
OUT.append("Section box updated successfully")