Fix #6305

Fix wrong calculation with blender engine for IfcFooting

src/bonsai/bonsai/bim/module/qto/calculator.py

@@ -95,6 +95,18 @@ def get_stair_length(obj: bpy.types.Object) -> float:
     stair_length = math.sqrt(pow(length, 2) + pow(height, 2))
     return stair_length
 
+def get_footing_length(o: bpy.types.Object) -> float:
+    element = tool.Ifc.get_entity(o)
+    assert element
+    predefined_type = ifcopenshell.util.element.get_predefined_type(element)
+    if not predefined_type:
+        return get_length(o)
+    if predefined_type == "FOOTING_BEAM" or predefined_type == "STRIP_FOOTING":
+        return get_z(o)
+    elif predefined_type == "PAD_FOOTING":
+        return max(get_x(o), get_y(o))
+    else:
+        return get_length(o)
 
 def get_net_stair_area(obj: bpy.types.Object) -> float:
     OBB_obj = get_OBB_object(obj)
@@ -174,6 +186,19 @@ def get_width(o: bpy.types.Object) -> float:
     y = get_y(o)
     return min(x, y)
 
+def get_footing_height(o: bpy.types.Object) -> float:
+    element = tool.Ifc.get_entity(o)
+    assert element
+    predefined_type = ifcopenshell.util.element.get_predefined_type(element)
+    if not predefined_type:
+        return get_height(o)
+    if predefined_type == "FOOTING_BEAM" or predefined_type == "STRIP_FOOTING":
+        return get_y(o)
+    elif predefined_type == "PAD_FOOTING":
+        return get_z(o)
+    else:
+        return get_height(o)
+
 
 def get_height(o: bpy.types.Object) -> float:
     """_summary_: Returns the height of the object bounding box

src/ifc5d/ifc5d/IFC4QtoBaseQuantitiesBlender.json

@@ -318,8 +318,8 @@
                     "GrossSurfaceArea": "get_gross_surface_area",
                     "GrossVolume": "get_gross_volume",
                     "GrossWeight": "get_gross_weight",
-                    "Height": "get_height",
+                    "Height": "get_footing_height",
-                    "Length": "get_length",
+                    "Length": "get_footing_length",
                     "NetVolume": "get_net_volume",
                     "NetWeight": "get_net_weight",
                     "OuterSurfaceArea": "get_outer_surface_area",

src/ifc5d/ifc5d/qto.py

@@ -441,6 +441,8 @@ class Blender(QtoCalculator):
         "get_rectangular_perimeter": Function("IfcLengthMeasure", "Rectangular Perimeter", ""),
         "get_stair_length": Function("IfcLengthMeasure", "Stair Length", ""),
         "get_width": Function("IfcLengthMeasure", "Width", ""),
+        "get_footing_height": Function("IfcLengthMeasure", "Height", ""),
+        "get_footing_length": Function("IfcLengthMeasure", "Length", ""),
         # IfcAreaMeasure
         "get_covering_gross_area": Function("IfcAreaMeasure", "Covering Gross Area", ""),
         "get_covering_net_area": Function("IfcAreaMeasure", "Covering Net Area", ""),