WIP implement void module with add / remove openings. See #1222.

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

@@ -34,11 +34,12 @@ class AddRepresentation(bpy.types.Operator):
     bl_idname = "bim.add_representation"
     bl_label = "Add Representation"
     obj: bpy.props.StringProperty()
+    context_id: bpy.props.IntProperty()
 
     def execute(self, context):
         obj = bpy.data.objects.get(self.obj) if self.obj else bpy.context.active_object
         self.file = IfcStore.get_file()
-        self.context_id = bpy.context.scene.BIMProperties.contexts
+        context_id = self.context_id or int(bpy.context.scene.BIMProperties.contexts)
 
         bpy.ops.bim.edit_object_placement(obj=obj.name)
 
@@ -46,7 +47,7 @@ class AddRepresentation(bpy.types.Operator):
             result = add_representation.Usecase(
                 self.file,
                 {
-                    "context": self.file.by_id(int(self.context_id)),
+                    "context": self.file.by_id(context_id),
                     "geometry": obj.data,
                     "total_items": max(1, len(obj.material_slots)),
                 },
@@ -71,7 +72,7 @@ class AddRepresentation(bpy.types.Operator):
 
             existing_mesh = obj.data
             mesh = obj.data.copy()
-            mesh.name = "{}/{}".format(self.context_id, result.id())
+            mesh.name = "{}/{}".format(context_id, result.id())
             mesh.BIMMeshProperties.ifc_definition_id = int(result.id())
             obj.data = mesh
         Data.load(obj.BIMObjectProperties.ifc_definition_id)

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

@@ -76,6 +76,7 @@ class AssignClass(bpy.types.Operator):
     ifc_class: bpy.props.StringProperty()
     predefined_type: bpy.props.StringProperty()
     userdefined_type: bpy.props.StringProperty()
+    context_id: bpy.props.IntProperty()
 
     def execute(self, context):
         objects = [bpy.data.objects.get(self.obj)] if self.obj else bpy.context.selected_objects
@@ -107,7 +108,7 @@ class AssignClass(bpy.types.Operator):
         obj.name = "{}/{}".format(product.is_a(), obj.name)
         obj.BIMObjectProperties.ifc_definition_id = int(product.id())
 
-        bpy.ops.bim.add_representation(obj=obj.name)
+        bpy.ops.bim.add_representation(obj=obj.name, context_id=self.context_id)
 
         if product.is_a("IfcElementType"):
             self.place_in_types_collection(obj)
@@ -160,12 +161,12 @@ class AssignClass(bpy.types.Operator):
 class UnassignClass(bpy.types.Operator):
     bl_idname = "bim.unassign_class"
     bl_label = "Unassign IFC Class"
-    object_name: bpy.props.StringProperty()
+    obj: bpy.props.StringProperty()
 
     def execute(self, context):
         self.file = IfcStore.get_file()
-        if self.object_name:
-            objects = [bpy.data.objects.get(self.object_name)]
+        if self.obj:
+            objects = [bpy.data.objects.get(self.obj)]
         else:
             objects = bpy.context.selected_objects
         for obj in objects:

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

@@ -3,6 +3,7 @@ from bpy.types import Panel
 from blenderbim.bim.module.root.data import Data
 from blenderbim.bim.ifc import IfcStore
 
+
 class BIM_PT_class(Panel):
     bl_label = "IFC Class"
     bl_idname = "BIM_PT_class"
@@ -34,8 +35,7 @@ class BIM_PT_class(Panel):
                 row = self.layout.row(align=True)
                 row.label(text=name)
                 row.operator("bim.enable_reassign_class", icon="GREASEPENCIL", text="")
-                op = row.operator("bim.unassign_class", icon="X", text="")
-                op.object_name = context.active_object.name
+                row.operator("bim.unassign_class", icon="X", text="").obj = context.active_object.name
         else:
             self.draw_class_dropdowns()
             row = self.layout.row(align=True)

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

@@ -0,0 +1,16 @@
+import bpy
+from . import ui, operator
+
+classes = (
+    operator.AddOpening,
+    operator.RemoveOpening,
+    ui.BIM_PT_voids,
+)
+
+
+def register():
+    pass
+
+
+def unregister():
+    pass

src/ifcblenderexport/blenderbim/bim/module/void/add_opening.py

@@ -0,0 +1,16 @@
+import ifcopenshell
+
+
+class Usecase:
+    def __init__(self, file, settings=None):
+        self.file = file
+        self.settings = {"opening": None, "element": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        self.file.create_entity("IfcRelVoidsElement", **{
+            "GlobalId": ifcopenshell.guid.new(),
+            "RelatingBuildingElement": self.settings["element"],
+            "RelatedOpeningElement": self.settings["opening"]
+        })

src/ifcblenderexport/blenderbim/bim/module/void/data.py

@@ -0,0 +1,53 @@
+from blenderbim.bim.ifc import IfcStore
+
+
+class Data:
+    products = {}
+    openings = {}
+    fillings = {}
+
+    @classmethod
+    def load(cls, product_id):
+        print('loading', product_id)
+        file = IfcStore.get_file()
+        if not file:
+            return
+        cls.products[product_id] = set()
+        product = file.by_id(product_id)
+        for rel in file.by_type("IfcRelVoidsElement"):
+            building_element = rel.RelatingBuildingElement
+            if building_element != product:
+                continue
+            opening = rel.RelatedOpeningElement
+            opening_id = int(opening.id())
+            cls.products[product_id].add(opening_id)
+            cls.openings[opening_id] = {"Name": opening.Name, "HasFillings": set()}
+        for rel in file.by_type("IfcRelFillsElement"):
+            opening = rel.RelatingOpeningElement
+            opening_id = int(opening.id())
+            if opening_id not in cls.openings:
+                continue
+            filling = rel.RelatedBuildingElement
+            filling_id = int(filling.id())
+            cls.fillings[filling_id] = {"Name": filling.Name, "FillsVoid": opening_id}
+            cls.openings[opening_id]["HasFillings"].add(filling_id)
+        return  # See bug #1224
+        #if not hasattr(product, "HasOpenings") or not product.HasOpenings:
+        #    return
+        #for rel_voids_element in product.HasOpenings:
+        #    opening = rel_voids_element.RelatedOpeningElement
+        #    opening_id = int(opening.id())
+        #    fillings = []
+        #    if opening.HasFillings:
+        #        for rel_fills_element in opening.HasFillings:
+        #            filling = rel_fills_element.RelatedBuildingElement
+        #            filling_id = int(filling.id())
+        #            fillings.append(filling_id)
+        #            cls.fillings[filling_id] = {
+        #                "Name": filling.Name,
+        #            }
+        #    cls.openings[opening_id] = {
+        #        "Name": opening.Name,
+        #        "HasFillings": fillings,
+        #    }
+        #    cls.products[product_id].append(opening_id)

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

@@ -0,0 +1,74 @@
+import bpy
+import blenderbim.bim.module.void.add_opening as add_opening
+import blenderbim.bim.module.void.remove_opening as remove_opening
+from blenderbim.bim.ifc import IfcStore
+from blenderbim.bim.module.void.data import Data
+from blenderbim.bim.module.context.data import Data as ContextData
+
+
+class AddOpening(bpy.types.Operator):
+    bl_idname = "bim.add_opening"
+    bl_label = "Add Opening"
+    opening: bpy.props.StringProperty()
+    obj: bpy.props.StringProperty()
+
+    def execute(self, context):
+        obj = bpy.data.objects.get(self.obj) if self.obj else bpy.context.active_object
+        opening = bpy.data.objects.get(self.opening)
+        if not opening.BIMObjectProperties.ifc_definition_id:
+            body_context_id = None
+            if not ContextData.is_loaded:
+                ContextData.load()
+            for context in ContextData.contexts.values():
+                for subcontext_id, subcontext in context["HasSubContexts"].items():
+                    if subcontext["ContextType"] == "Model" and subcontext["ContextIdentifier"] == "Body":
+                        body_context_id = subcontext_id
+                        break
+            if not body_context_id:
+                return {"FINISHED"}
+            bpy.ops.bim.assign_class(obj=opening.name, ifc_class="IfcOpeningElement", context_id=body_context_id)
+
+        self.file = IfcStore.get_file()
+        element_id = obj.BIMObjectProperties.ifc_definition_id
+        add_opening.Usecase(self.file, {
+            "opening": self.file.by_id(opening.BIMObjectProperties.ifc_definition_id),
+            "element": self.file.by_id(element_id)
+        }).execute()
+        Data.load(element_id)
+
+        has_modifier = False
+
+        for modifier in obj.modifiers:
+            if modifier.type == "BOOLEAN" and modifier.object and modifier.object == opening:
+                has_modifier = True
+                break
+
+        if not has_modifier:
+            modifier = obj.modifiers.new("IfcOpeningElement", "BOOLEAN")
+            modifier.operation = "DIFFERENCE"
+            modifier.object = opening
+        return {"FINISHED"}
+
+
+class RemoveOpening(bpy.types.Operator):
+    bl_idname = "bim.remove_opening"
+    bl_label = "Remove Opening"
+    opening_id: bpy.props.IntProperty()
+    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()
+        for modifier in obj.modifiers:
+            if modifier.type != "BOOLEAN":
+                continue
+            if modifier.object and modifier.object.BIMObjectProperties.ifc_definition_id == self.opening_id:
+                modifier.object.BIMObjectProperties.ifc_definition_id = 0
+                if "/" in modifier.object.name and modifier.object.name[0:3] == "Ifc":
+                    modifier.object.name = "/".join(modifier.object.name.split("/")[1:])
+                obj.modifiers.remove(modifier)
+                break
+
+        remove_opening.Usecase(self.file, {"opening": self.file.by_id(self.opening_id)}).execute()
+        Data.load(obj.BIMObjectProperties.ifc_definition_id)
+        return {"FINISHED"}

src/ifcblenderexport/blenderbim/bim/module/void/remove_opening.py

@@ -0,0 +1,20 @@
+class Usecase:
+    def __init__(self, file, settings=None):
+        self.file = file
+        self.settings = {"opening": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        to_remove = [] # See bug #1224
+        for rel in self.file.by_type("IfcRelVoidsElement"):
+            if rel.RelatedOpeningElement == self.settings["opening"]:
+                to_remove.append(rel)
+                break
+        for rel in self.file.by_type("IfcRelFillsElement"):
+            if rel.RelatingOpeningElement == self.settings["opening"]:
+                to_remove.append(rel)
+                break
+        self.file.remove(self.settings["opening"])
+        for element in to_remove:
+            self.file.remove(element)

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

@@ -0,0 +1,56 @@
+import bpy
+from bpy.types import Panel
+from blenderbim.bim.module.void.data import Data
+
+
+class BIM_PT_voids(Panel):
+    bl_label = "IFC Voids"
+    bl_idname = "BIM_PT_voids"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "object"
+
+    def draw(self, context):
+        props = context.active_object.BIMObjectProperties
+        if props.ifc_definition_id not in Data.products:
+            Data.load(props.ifc_definition_id)
+
+        row = self.layout.row(align=True)
+        if len(context.selected_objects) == 2:
+            op = row.operator("bim.add_opening", icon="ADD", text="Add Selected")
+            for obj in context.selected_objects:
+                if "IfcOpeningElement" in obj.name or not obj.BIMObjectProperties.ifc_definition_id:
+                    op.opening = obj.name
+                else:
+                    op.obj = obj.name
+
+            opening_id = None
+            obj_name = None
+            for obj in context.selected_objects:
+                if obj.BIMObjectProperties.ifc_definition_id in Data.openings:
+                    opening_id = obj.BIMObjectProperties.ifc_definition_id
+                elif obj.BIMObjectProperties.ifc_definition_id in Data.fillings:
+                    opening_id = Data.fillings[obj.BIMObjectProperties.ifc_definition_id]["FillsVoid"]
+                else:
+                    obj_name = obj.name
+            if opening_id and obj_name:
+                op = row.operator("bim.remove_opening", icon="X", text="Remove Selected")
+                op.opening_id = opening_id
+                op.obj = obj_name
+        else:
+            row.label(text="Select an opening and an element to modify", icon="HELP")
+
+        for opening_id in Data.products[props.ifc_definition_id]:
+            opening = Data.openings[opening_id]
+            if opening["HasFillings"]:
+                for filling_id in opening["HasFillings"]:
+                    filling = Data.fillings[filling_id]
+                    row = self.layout.row(align=True)
+                    row.label(text=opening["Name"])
+                    row.label(text=filling["Name"])
+            else:
+                row = self.layout.row(align=True)
+                row.label(text=opening["Name"])
+            op = row.operator("bim.remove_opening", icon="X", text="")
+            op.opening_id = opening_id