WIP implement local placement tree. See #1222.

src/ifcblenderexport/blenderbim/bim/module/aggregate/operator.py

@@ -25,6 +25,7 @@ class AssignObject(bpy.types.Operator):
                 "relating_object": self.file.by_id(relating_object.BIMObjectProperties.ifc_definition_id),
             },
         ).execute()
+        bpy.ops.bim.edit_object_placement(obj=related_object.name)
         Data.load(props.ifc_definition_id)
         bpy.ops.bim.disable_editing_aggregate(obj=related_object.name)
 

src/ifcblenderexport/blenderbim/bim/module/geometry/__init__.py

@@ -2,6 +2,7 @@ import bpy
 from . import ui, operator
 
 classes = (
+    operator.EditObjectPlacement,
     operator.AddRepresentation,
     operator.SwitchRepresentation,
     operator.RemoveRepresentation,
@@ -14,8 +15,8 @@ classes = (
 
 
 def register():
-    pass
+    bpy.types.OBJECT_PT_transform.append(ui.BIM_PT_transform)
 
 
 def unregister():
-    pass
+    bpy.types.OBJECT_PT_transform.remove(ui.BIM_PT_transform)

src/ifcblenderexport/blenderbim/bim/module/geometry/edit_object_placement.py

@@ -1,4 +1,5 @@
 import numpy as np
+import ifcopenshell.util.element
 import ifcopenshell.util.placement
 
 
@@ -13,12 +14,38 @@ class Usecase:
         if not hasattr(self.settings["product"], "ObjectPlacement"):
             return
         self.unit_scale = ifcopenshell.util.unit.calculate_unit_scale(self.file)
-        if not self.settings["product"].ObjectPlacement:
-            placement_rel_to = None
-        else:
-            placement_rel_to = self.settings["product"].ObjectPlacement.PlacementRelTo
+
+        dependent_objects = []
+        if self.settings["product"].ObjectPlacement:
+            for referenced_placement in self.settings["product"].ObjectPlacement.ReferencedByPlacements:
+                for placed_obj in referenced_placement.PlacesObject:
+                    dependent_objects.append(
+                        {
+                            "product": placed_obj,
+                            "matrix": ifcopenshell.util.placement.get_local_placement(referenced_placement),
+                        }
+                    )
+
+        placement_rel_to = None
+        if hasattr(self.settings["product"], "ContainedInStructure") and self.settings["product"].ContainedInStructure:
+            placement_rel_to = self.settings["product"].ContainedInStructure[0].RelatingStructure.ObjectPlacement
+        elif hasattr(self.settings["product"], "Decomposes") and self.settings["product"].Decomposes:
+            relating_object = self.settings["product"].Decomposes[0].RelatingObject
+            placement_rel_to = relating_object.ObjectPlacement if hasattr(relating_object, "ObjectPlacement") else None
+
         placement = self.file.createIfcLocalPlacement(placement_rel_to, self.get_relative_placement(placement_rel_to))
+        if self.settings["product"].ObjectPlacement:
+            for inverse in self.file.get_inverse(self.settings["product"]):
+                ifcopenshell.util.element.replace_attribute(
+                    inverse, self.settings["product"].ObjectPlacement, placement
+                )
+            self.file.remove(self.settings["product"].ObjectPlacement)
         self.settings["product"].ObjectPlacement = placement
+
+        for settings in dependent_objects:
+            self.settings = settings
+            self.execute()
+
         return placement
 
     def get_relative_placement(self, placement_rel_to):
@@ -34,7 +61,7 @@ class Usecase:
         z = np.array((m[0][2], m[1][2], m[2][2]))
         o = np.array((m[0][3], m[1][3], m[2][3]))
         object_matrix = ifcopenshell.util.placement.a2p(o, z, x)
-        relative_placement_matrix = relating_object_matrix @ object_matrix
+        relative_placement_matrix = np.linalg.inv(relating_object_matrix) @ object_matrix
         return self.create_ifc_axis_2_placement_3d(
             relative_placement_matrix[:, 3][0:3],
             relative_placement_matrix[:, 2][0:3],

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

@@ -2,7 +2,7 @@ import bpy
 import numpy as np
 import ifcopenshell
 import logging
-import blenderbim.bim.module.geometry.add_object_placement as add_object_placement
+import blenderbim.bim.module.geometry.edit_object_placement as edit_object_placement
 import blenderbim.bim.module.geometry.add_representation as add_representation
 import blenderbim.bim.module.geometry.assign_styles as assign_styles
 import blenderbim.bim.module.geometry.assign_representation as assign_representation
@@ -12,6 +12,24 @@ from blenderbim.bim import import_ifc
 from blenderbim.bim.module.geometry.data import Data
 
 
+class EditObjectPlacement(bpy.types.Operator):
+    bl_idname = "bim.edit_object_placement"
+    bl_label = "Edit Object Placement"
+    obj: bpy.props.StringProperty()
+
+    def execute(self, context):
+        obj = bpy.data.objects.get(self.obj) if self.obj else bpy.context.active_object
+        self.file = IfcStore.get_file()
+        edit_object_placement.Usecase(
+            self.file,
+            {
+                "product": self.file.by_id(obj.BIMObjectProperties.ifc_definition_id),
+                "matrix": np.array(obj.matrix_world),
+            },
+        ).execute()
+        return {"FINISHED"}
+
+
 class AddRepresentation(bpy.types.Operator):
     bl_idname = "bim.add_representation"
     bl_label = "Add Representation"
@@ -22,13 +40,7 @@ class AddRepresentation(bpy.types.Operator):
         self.file = IfcStore.get_file()
         self.context_id = bpy.context.scene.BIMProperties.contexts
 
-        add_object_placement.Usecase(
-            self.file,
-            {
-                "product": self.file.by_id(obj.BIMObjectProperties.ifc_definition_id),
-                "matrix": np.array(obj.matrix_world),
-            },
-        ).execute()
+        bpy.ops.bim.edit_object_placement(obj=obj.name)
 
         if obj.data:
             result = add_representation.Usecase(
@@ -134,13 +146,7 @@ class UpdateMeshRepresentation(bpy.types.Operator):
         obj = bpy.data.objects.get(self.obj) if self.obj else bpy.context.active_object
         self.file = IfcStore.get_file()
 
-        add_object_placement.Usecase(
-            self.file,
-            {
-                "product": self.file.by_id(obj.BIMObjectProperties.ifc_definition_id),
-                "matrix": np.array(obj.matrix_world),
-            },
-        ).execute()
+        bpy.ops.bim.edit_object_placement(obj=obj.name)
 
         element = self.file.by_id(obj.data.BIMMeshProperties.ifc_definition_id)
         result = add_representation.Usecase(

src/ifcblenderexport/blenderbim/bim/module/geometry/ui.py

@@ -67,3 +67,9 @@ class BIM_PT_mesh(Panel):
             row.prop(ifc_parameter, "name", text="")
             row.prop(ifc_parameter, "value", text="")
             row.operator("bim.update_parametric_representation", icon="FILE_REFRESH", text="").index = index
+
+
+def BIM_PT_transform(self, context):
+    if context.active_object and context.active_object.BIMObjectProperties.ifc_definition_id:
+        row = self.layout.row()
+        row.operator("bim.edit_object_placement")

src/ifcblenderexport/blenderbim/bim/module/root/operator.py

@@ -5,11 +5,6 @@ import ifcopenshell.util.schema
 import blenderbim.bim.module.root.create_product as create_product
 import blenderbim.bim.module.root.remove_product as remove_product
 import blenderbim.bim.module.root.reassign_class as reassign_class
-import blenderbim.bim.module.geometry.add_representation as add_representation
-import blenderbim.bim.module.geometry.assign_styles as assign_styles
-import blenderbim.bim.module.geometry.assign_representation as assign_representation
-import blenderbim.bim.module.geometry.add_object_placement as add_object_placement
-import blenderbim.bim.module.spatial.assign_container as assign_container
 from blenderbim.bim.ifc import IfcStore
 
 

src/ifcblenderexport/blenderbim/bim/module/spatial/operator.py

@@ -29,6 +29,7 @@ class AssignContainer(bpy.types.Operator):
                 "relating_structure": self.file.by_id(relating_structure.BIMObjectProperties.ifc_definition_id),
             },
         ).execute()
+        bpy.ops.bim.edit_object_placement(obj=related_element.name)
         Data.load(props.ifc_definition_id)
         bpy.ops.bim.disable_editing_container(obj=related_element.name)
 

src/ifcblenderexport/blenderbim/bim/ui.py

@@ -1522,6 +1522,7 @@ class BIM_PT_patch(Panel):
 class BIM_PT_mvd(Panel):
     bl_label = "Model View Definitions (MVD)"
     bl_idname = "BIM_PT_mvd"
+    bl_options = {"DEFAULT_CLOSED"}
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"