Fix 3 bugs related to representations:

* Bug when switching representations when active object not selected.
 * Bug when switching to a non MODEL_VIEW body representation would load the MODEL_VIEW one instead all the time.
 * Add support for plan body representations.

src/blenderbim/blenderbim/bim/module/geometry/operator.py

@@ -116,7 +116,7 @@ class SwitchRepresentation(bpy.types.Operator, Operator):
     def _execute(self, context):
         target = tool.Ifc.get().by_id(self.ifc_definition_id).ContextOfItems
         is_subcontext = target.is_a("IfcGeometricRepresentationSubContext")
-        for obj in context.selected_objects:
+        for obj in set(context.selected_objects + [context.active_object]):
             element = tool.Ifc.get_entity(obj)
             if not element:
                 continue

src/blenderbim/blenderbim/tool/geometry.py

@@ -174,7 +174,8 @@ class Geometry(blenderbim.core.tool.Geometry):
         settings = ifcopenshell.geom.settings()
         settings.set(settings.WELD_VERTICES, True)
 
-        if representation.ContextOfItems.ContextIdentifier == "Body":
+        context = representation.ContextOfItems
+        if context.ContextIdentifier == "Body" and context.TargetView == "MODEL_VIEW":
             if element.is_a("IfcTypeProduct"):
                 shape = ifcopenshell.geom.create_shape(settings, representation)
             else:

src/ifcopenshell-python/ifcopenshell/api/geometry/add_representation.py

@@ -153,7 +153,7 @@ class Usecase:
         elif self.settings["context"].ContextIdentifier == "Axis":
             return self.create_curve2d_representation()
         elif self.settings["context"].ContextIdentifier == "Body":
-            pass
+            return self.create_annotation2d_representation()
         elif self.settings["context"].ContextIdentifier == "Box":
             pass
         elif self.settings["context"].ContextIdentifier == "Clearance":