From 0b05c3bcfcd3e6cdc66be2c6b7e660d79fa25768 Mon Sep 17 00:00:00 2001
From: falken10vdl <33285113+falken10vdl@users.noreply.github.com>
Date: Fri, 27 Jun 2025 15:20:50 +0200
Subject: [PATCH] Z-coordinate  in PlanLevelDecorator relative to spatial
 container if exists. Absolute otherwise (#6845)

* Z-coordinate  in PlanLevelDecorator relative to spatial container if exists. Absolute otherwise
---
 src/bonsai/bonsai/bim/module/drawing/decoration.py | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/bonsai/bonsai/bim/module/drawing/decoration.py b/src/bonsai/bonsai/bim/module/drawing/decoration.py
index f2b52d4c5c..cb309211e9 100644
--- a/src/bonsai/bonsai/bim/module/drawing/decoration.py
+++ b/src/bonsai/bonsai/bim/module/drawing/decoration.py
@@ -1204,7 +1204,19 @@ class PlanLevelDecorator(BaseDecorator):
                 text_dir *= -1
 
             def get_text():
-                z = verts[0].z
+                abs_z = verts[0].z
+                z = abs_z
+
+                if element:
+                    spatial_container = ifcopenshell.util.element.get_container(element)
+
+                    if spatial_container:
+                        container_obj = tool.Ifc.get_object(spatial_container)
+
+                        if container_obj:
+                            spatial_container_z = container_obj.matrix_world.translation.z
+                            z = abs_z - spatial_container_z
+
                 rl = self.format_value(context, z)
                 text = "{}{}".format("" if z < 0 else "+", rl)
                 return text