Minor fix

src/ifcblenderexport/blenderbim/bim/__init__.py

@@ -160,6 +160,7 @@ if bpy is not None:
         operator.PropagateTextData,
         operator.PushRepresentation,
         operator.ConvertLocalToGlobal,
+        operator.GetObjectLinearLength,
         operator.GetObjectLength,
         operator.GetObjectWidth,
         operator.GetObjectHeight,

src/ifcblenderexport/blenderbim/bim/operator.py

@@ -3196,6 +3196,18 @@ class GetObjectArea(bpy.types.Operator):
         return {'FINISHED'}
 
 
+class GetObjectLinearLength(bpy.types.Operator):
+    bl_idname = 'bim.get_object_linear_length'
+    bl_label = 'Get Object Linear Length'
+    qto_index: bpy.props.IntProperty()
+    prop_index: bpy.props.IntProperty()
+
+    def execute(self, context):
+        qto_calculator = qto.QtoCalculator()
+        bpy.context.active_object.BIMObjectProperties.qtos[self.qto_index].properties[self.prop_index].string_value = str(round(qto_calculator.get_linear_length(bpy.context.active_object), 3))
+        return {'FINISHED'}
+
+
 class GetObjectLength(bpy.types.Operator):
     bl_idname = 'bim.get_object_length'
     bl_label = 'Get Object Length'

src/ifcblenderexport/blenderbim/bim/qto.py

@@ -4,11 +4,17 @@ class QtoCalculator():
     def get_units(self, o, vg_index):
         return len([v for v in o.data.vertices if vg_index in [g.group for g in v.groups]])
 
+    def get_linear_length(self, o):
+        x = (Vector(o.bound_box[4]) - Vector(o.bound_box[0])).length
+        y = (Vector(o.bound_box[3]) - Vector(o.bound_box[0])).length
+        z = (Vector(o.bound_box[1]) - Vector(o.bound_box[0])).length
+        return max(x, y, z)
+
     def get_length(self, o, vg_index=None):
         if vg_index is None:
             x = (Vector(o.bound_box[4]) - Vector(o.bound_box[0])).length
             y = (Vector(o.bound_box[3]) - Vector(o.bound_box[0])).length
-            return x if x > y else y
+            return max(x, y)
         length = 0
         edges = [e for e in o.data.edges if (
                 vg_index in [g.group for g in o.data.vertices[e.vertices[0]].groups] and
@@ -21,7 +27,7 @@ class QtoCalculator():
     def get_width(self, o):
         x = (Vector(o.bound_box[4]) - Vector(o.bound_box[0])).length
         y = (Vector(o.bound_box[3]) - Vector(o.bound_box[0])).length
-        return x if x < y else y
+        return min(x, y)
 
     def get_height(self, o):
         return (Vector(o.bound_box[1]) - Vector(o.bound_box[0])).length
@@ -43,9 +49,7 @@ class QtoCalculator():
         x = (Vector(o.bound_box[4]) - Vector(o.bound_box[0])).length
         y = (Vector(o.bound_box[3]) - Vector(o.bound_box[0])).length
         z = (Vector(o.bound_box[1]) - Vector(o.bound_box[0])).length
-        a1 = x * z
-        a2 = y * z
-        return a1 if a1 > a2 else a2
+        return max(x * z, y * z)
 
     def get_area(self, o, vg_index=None):
         if vg_index is None:

src/ifcblenderexport/blenderbim/bim/ui.py

@@ -103,7 +103,13 @@ class BIM_PT_object(Panel):
                 row = layout.row(align=True)
                 row.prop(prop, 'name', text='')
                 row.prop(prop, 'string_value', text='')
-                if 'length' in prop.name.lower():
+                if 'length' in prop.name.lower() \
+                        and 'width' not in [p.name.lower() for p in qto.properties] \
+                        and 'height' not in [p.name.lower() for p in qto.properties]:
+                    op = row.operator('bim.get_object_linear_length', icon='IPO_EASE_IN_OUT', text='')
+                    op.qto_index = index
+                    op.prop_index = index2
+                elif 'length' in prop.name.lower():
                     op = row.operator('bim.get_object_length', icon='IPO_EASE_IN_OUT', text='')
                     op.qto_index = index
                     op.prop_index = index2
@@ -121,7 +127,7 @@ class BIM_PT_object(Panel):
                     op.qto_index = index
                     op.prop_index = index2
                 elif 'area' in prop.name.lower() \
-                        and 'footprint' in prop.name.lower():
+                        and ('footprint' in prop.name.lower() or 'section' in prop.name.lower()):
                     op = row.operator('bim.get_object_footprint_area', icon='MESH_CIRCLE', text='')
                     op.qto_index = index
                     op.prop_index = index2