From 966751a928aa77163b8829029463f98774d33754 Mon Sep 17 00:00:00 2001
From: falken10vdl <falken10vdl@gmail.com>
Date: Thu, 29 Jan 2026 13:10:54 +0100
Subject: [PATCH] Add support for FLOW_SEGMENT_RECTANGULAR_HOLLOW in profile
 creation in the MEP Segment Tool

---
 src/bonsai/bonsai/bim/module/root/data.py     |  5 +++++
 src/bonsai/bonsai/bim/module/root/operator.py | 18 ++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/src/bonsai/bonsai/bim/module/root/data.py b/src/bonsai/bonsai/bim/module/root/data.py
index 66412e7d48..d2516559b4 100644
--- a/src/bonsai/bonsai/bim/module/root/data.py
+++ b/src/bonsai/bonsai/bim/module/root/data.py
@@ -191,6 +191,11 @@ class IfcClassData:
                         "Rectangular Distribution Segment",
                         "Works similarly to Profile, has distribution ports",
                     ),
+                    (
+                        "FLOW_SEGMENT_RECTANGULAR_HOLLOW",
+                        "Rectangular Hollow Distribution Segment",
+                        "Works similarly to Profile, has distribution ports",
+                    ),
                     (
                         "FLOW_SEGMENT_CIRCULAR",
                         "Circular Distribution Segment",
diff --git a/src/bonsai/bonsai/bim/module/root/operator.py b/src/bonsai/bonsai/bim/module/root/operator.py
index a2ac73f200..dc1d74f027 100644
--- a/src/bonsai/bonsai/bim/module/root/operator.py
+++ b/src/bonsai/bonsai/bim/module/root/operator.py
@@ -697,6 +697,24 @@ class AddElement(bpy.types.Operator, tool.Ifc.Operator):
                         XDim=default_x_dim / unit_scale,
                         YDim=default_y_dim / unit_scale,
                     )
+                elif representation_template == "FLOW_SEGMENT_RECTANGULAR_HOLLOW":
+                    default_x_dim = 0.4
+                    default_y_dim = 0.2
+                    default_thickness = 0.005
+                    default_inner_fillet_radius = 0.005
+                    default_outer_fillet_radius = 0.005
+                    profile_name = f"{props.ifc_class}-{default_x_dim*1000}x{default_y_dim*1000}"
+                    profile = tool.Ifc.get().create_entity(
+                        "IfcRectangleHollowProfileDef",
+                        ProfileName=profile_name,
+                        ProfileType="AREA",
+                        XDim=default_x_dim / unit_scale,
+                        YDim=default_y_dim / unit_scale,
+                        WallThickness=default_thickness / unit_scale,
+                        InnerFilletRadius=default_inner_fillet_radius / unit_scale,
+                        OuterFilletRadius=default_outer_fillet_radius / unit_scale,
+                    )
+
                 elif representation_template == "FLOW_SEGMENT_CIRCULAR":
                     default_diameter = 0.1
                     profile_name = f"{props.ifc_class}-{default_diameter*1000}"