From 6c63c298fc660713e2f3e398939910898f49445d Mon Sep 17 00:00:00 2001
From: Roy-043 <70520633+Roy-043@users.noreply.github.com>
Date: Mon, 25 Aug 2025 18:09:31 +0200
Subject: [PATCH] Bim: Fix direction of panel waves (#23271)

* Update ArchPanel.py

* Update ArchPanel.py
---
 src/Mod/BIM/ArchPanel.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Mod/BIM/ArchPanel.py b/src/Mod/BIM/ArchPanel.py
index 77abc9512c..ac673e83ff 100644
--- a/src/Mod/BIM/ArchPanel.py
+++ b/src/Mod/BIM/ArchPanel.py
@@ -403,6 +403,9 @@ class _Panel(ArchComponent.Component):
 
                 baseface = Part.Face(basewire)
                 base = baseface.extrude(Vector(0,bb.YLength,0))
+                if normal.cross(FreeCAD.Vector(0,0,1)).Length > 1e-6:
+                    rot = FreeCAD.Rotation(FreeCAD.Vector(0,-1,0),FreeCAD.Vector(*normal[:2],0))
+                    base.rotate(bb.Center,rot.Axis,math.degrees(rot.Angle))
                 rot = FreeCAD.Rotation(FreeCAD.Vector(0,0,1),normal)
                 base.rotate(bb.Center,rot.Axis,math.degrees(rot.Angle))
                 if obj.WaveDirection.Value: