Implement #3083

src/bonsai/bonsai/bim/module/model/__init__.py

@@ -105,6 +105,7 @@ classes = (
     slab.EditSketchExtrusionProfile,
     slab.EnableEditingExtrusionProfile,
     slab.EnableEditingSketchExtrusionProfile,
+    slab.RecalculateSlab,
     slab.ResetVertex,
     slab.SetArcIndex,
     space.GenerateSpace,

src/bonsai/bonsai/bim/module/model/slab.py

@@ -34,6 +34,7 @@ from mathutils import Vector, Matrix
 from bonsai.bim.module.geometry.helper import Helper
 from bonsai.bim.module.model.decorator import ProfileDecorator, PolylineDecorator, ProductDecorator
 from bonsai.bim.module.model.polyline import PolylineOperator
+from bonsai.bim.module.model.wall import DumbWallRecalculator
 from typing import Optional
 
 
@@ -821,3 +822,24 @@ class DrawPolylineSlab(bpy.types.Operator, PolylineOperator):
         self.tool_state.use_default_container = True
         self.tool_state.plane_method = "XY"
         return {"RUNNING_MODAL"}
+
+class RecalculateSlab(bpy.types.Operator, tool.Ifc.Operator):
+    bl_idname = "bim.recalculate_slab"
+    bl_label = "Recalculate Slab"
+    bl_options = {"REGISTER", "UNDO"}
+
+    @classmethod
+    def poll(cls, context):
+        return context.selected_objects
+
+    def _execute(self, context):
+        walls = []
+        for obj in context.selected_objects:
+            element = tool.Ifc.get_entity(obj)
+            if element.is_a("IfcSlab"):
+                for rel in element.ConnectedTo:
+                    if rel.is_a() == "IfcRelConnectsElements" and rel.RelatedElement.is_a("IfcWall"):
+                        walls.append(tool.Ifc.get_object(rel.RelatedElement))
+                
+        DumbWallRecalculator().recalculate(walls)
+        return {"FINISHED"}

src/bonsai/bonsai/bim/module/model/workspace.py

@@ -1086,6 +1086,8 @@ class Hotkey(bpy.types.Operator, tool.Ifc.Operator):
             return
         if self.active_material_usage == "LAYER2":
             bpy.ops.bim.recalculate_wall()
+        elif self.active_material_usage == "LAYER3":
+            bpy.ops.bim.recalculate_slab()
         elif tool.System.get_ports(element):
             bpy.ops.bim.regenerate_distribution_element()
         elif self.active_material_usage == "PROFILE":