Merge branch 'ifcsverchok_dev' of github.com:mdjska/IfcOpenShell into v0.7.0

Merging gsoc changes

src/ifcsverchok/__init__.py

@@ -1,4 +1,3 @@
-
 # IfcSverchok - IFC Sverchok extension
 # Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
 #
@@ -36,10 +35,14 @@ import sverchok
 from sverchok.core import sv_registration_utils, make_node_list
 from sverchok.utils import auto_gather_node_classes, get_node_class_reference
 from sverchok.menu import SverchNodeItem, SverchNodeCategory, register_node_panels
-from sverchok.utils.extra_categories import register_extra_category_provider, unregister_extra_category_provider
+from sverchok.utils.extra_categories import (
+    register_extra_category_provider,
+    unregister_extra_category_provider,
+)
 from sverchok.ui.nodeview_space_menu import make_extra_category_menus
 from sverchok.utils.logging import info, debug
-
+import asyncio
+import time
 
 def nodes_index():
     return [
@@ -52,17 +55,26 @@ def nodes_index():
                 ("ifc.create_entity", "SvIfcCreateEntity"),
                 ("ifc.create_shape", "SvIfcCreateShape"),
                 ("ifc.read_entity", "SvIfcReadEntity"),
+                ("ifc.pick_ifc_class", "SvIfcPickIfcClass"),
                 ("ifc.by_id", "SvIfcById"),
                 ("ifc.by_guid", "SvIfcByGuid"),
                 ("ifc.by_type", "SvIfcByType"),
                 ("ifc.by_query", "SvIfcByQuery"),
                 ("ifc.add", "SvIfcAdd"),
+                ("ifc.add_pset", "SvIfcAddPset"),
+                ("ifc.add_spatial_element", "SvIfcAddSpatialElement"),
                 ("ifc.remove", "SvIfcRemove"),
                 ("ifc.generate_guid", "SvIfcGenerateGuid"),
                 ("ifc.get_property", "SvIfcGetProperty"),
                 ("ifc.get_attribute", "SvIfcGetAttribute"),
                 ("ifc.select_blender_objects", "SvIfcSelectBlenderObjects"),
                 ("ifc.api", "SvIfcApi"),
+                ("ifc.api_WIP", "SvIfcApiWIP"),
+                ("ifc.bmesh_to_ifc", "SvIfcBMeshToIfcRepr"),
+                ("ifc.sverchok_to_ifc", "SvIfcSverchokToIfcRepr"),
+                ("ifc.create_project", "SvIfcCreateProject"),
+                ("ifc.quick_project_setup", "SvIfcQuickProjectSetup")
+
             ],
         )
     ]
@@ -84,7 +96,131 @@ imported_modules = make_node_list()
 reload_event = False
 
 import bpy
+import os
+from os.path import abspath, splitext
+import ifcopenshell
+from ifcsverchok.ifcstore import SvIfcStore
+from sverchok.data_structure import flatten_data
 
+class IFC_Sv_UpdateCurrent(bpy.types.Operator):
+    """Update current Sverchok node tree"""
+    bl_idname = "ifc.sverchok_update_current"
+    bl_label = "Update current node tree"
+    bl_options = {'REGISTER', 'UNDO', 'INTERNAL'}
+
+    node_group: bpy.props.StringProperty(default="")
+    force_mode: bpy.props.BoolProperty(default=False)
+
+    def execute(self, context):
+        print("#"*10, "Update current node tree")
+        self.file = SvIfcStore.purge()
+        self.file = SvIfcStore.get_file()
+        self.file.write("/Users/martina/Documents/GSoC/CodeTests/IfcFileTest_7_11_purged.ifc")
+        node_tree = context.space_data.node_tree
+        if node_tree:
+            if self.force_mode or node_tree.sv_process:
+                try:
+                    bpy.context.window.cursor_set("WAIT")
+                    node_tree.force_update()
+                finally:
+                    bpy.context.window.cursor_set("DEFAULT")
+        self.report({"INFO"}, "Node tree updated.")
+        return {'FINISHED'}
+
+class IFC_Sv_write_file(bpy.types.Operator):
+    bl_idname = "ifc.write_file_panel"
+    bl_label = "Write File"
+    bl_options = {"REGISTER", "UNDO"}
+    bl_description = "File path to write to."
+    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
+    node_group: bpy.props.StringProperty(default="")
+    force_mode: bpy.props.BoolProperty(default=False)
+
+    @classmethod
+    def poll(cls, context):
+        return any("IFC" in n for n in context.space_data.edit_tree.nodes.keys())
+
+    def ensure_hirarchy(self, file):
+        elements_in_buildings = []
+        if not 0 <= 0 < len(file.by_type("IfcBuilding")):
+            my_building = ifcopenshell.api.run("root.create_entity", file, ifc_class="IfcBuilding", name="My Building")
+            elements = ifcopenshell.util.element.get_decomposition(my_building)
+        else:
+            for building in file.by_type("IfcBuilding"):
+                elements = ifcopenshell.util.element.get_decomposition(building)
+                elements_in_buildings.extend(elements)
+
+        for spatial in (file.by_type("IfcSpatialElement") or file.by_type("IfcSpatialStructureElement")):
+            if (not (spatial.is_a("IfcSite") or spatial.is_a("IfcBuilding")) and (spatial not in elements_in_buildings)):
+                elements = ifcopenshell.util.element.get_decomposition(spatial)
+                ifcopenshell.api.run("aggregate.assign_object", file, product=spatial, relating_object=file.by_type("IfcBuilding")[0])
+
+        elements_in_buildings_after = []
+        for building in file.by_type("IfcBuilding"):
+            elements = ifcopenshell.util.element.get_decomposition(building)
+            elements_in_buildings_after.extend(elements)
+
+        elements = file.by_type("IfcElement")
+        for element in elements:
+            if element not in elements_in_buildings:
+                ifcopenshell.api.run("spatial.assign_container", file, product=element, relating_structure=file.by_type("IfcBuilding")[0])
+
+
+        for building in file.by_type("IfcBuilding"):
+            elements = ifcopenshell.util.element.get_decomposition(building)
+            if not building.Decomposes:
+                if not 0 <= 0 < len(file.by_type("IfcSite")):
+                    ifcopenshell.api.run("root.create_entity", file, ifc_class="IfcSite", name="My Site")
+                ifcopenshell.api.run("aggregate.assign_object", file, product=building, relating_object=file.by_type("IfcSite")[0])
+                try:
+                    if file.by_type("IfcSite")[0].Decomposes[0].RelatingObject.is_a("IfcProject"):
+                        continue
+                except IndexError:
+                    pass
+                ifcopenshell.api.run("aggregate.assign_object", file, product=file.by_type("IfcSite")[0], relating_object=file.by_type("IfcProject")[0])
+        self.file = file
+        return
+
+    def execute(self, context):
+        self.file = SvIfcStore.file
+        if not self.file:
+            raise Exception("No IFC file in SvIfcStore.")
+        _, ext = splitext(self.filepath)
+        if not ext:
+            raise Exception("Bad path. Provide a path to a file.")
+        else:
+            self.ensure_hirarchy(self.file)
+            self.file.write(self.filepath)
+            self.report({"INFO"}, f"File written to: {self.filepath}")
+        return {"FINISHED"}
+
+    def invoke(self, context, event):
+        context.window_manager.fileselect_add(self)
+        return {"RUNNING_MODAL"}
+
+class IFC_PT_write_file_panel(bpy.types.Panel):
+    bl_idname = "IFC_PT_write_file_panel"
+    bl_label = "Write IFC to file"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "NODE_EDITOR"
+    bl_region_type = "UI"
+    bl_category = "IfcSverchok"
+
+    @classmethod
+    def poll(cls, context):
+        if context.space_data.edit_tree and any("IFC" in n for n in context.space_data.edit_tree.nodes.keys()):
+            return True
+
+    def draw(self, context):
+        ng = context.space_data.node_tree
+        layout = self.layout
+        row = layout.split(factor=0.2, align=True)
+        row = layout.row()
+        row2 = layout.row()
+        row.operator('ifc.sverchok_update_current', text='IFC Re-run all nodes')
+        row2.operator("ifc.write_file_panel")
+
+CLASSES = [IFC_Sv_UpdateCurrent,IFC_Sv_write_file, IFC_PT_write_file_panel]
 
 def register_nodes():
     node_modules = make_node_list()
@@ -109,7 +245,10 @@ def make_menu():
             nodetype = item[1]
             rna = get_node_class_reference(nodetype)
             if not rna:
-                info("Node `%s' is not available (probably due to missing dependencies).", nodetype)
+                info(
+                    "Node `%s' is not available (probably due to missing dependencies).",
+                    nodetype,
+                )
             else:
                 node_item = SverchNodeItem.new(nodetype)
                 node_items.append(node_item)
@@ -135,13 +274,16 @@ def register():
     global our_menu_classes
 
     debug("Registering ifcsverchok")
-
+    for klass in CLASSES:
+        bpy.utils.register_class(klass)
     register_nodes()
     extra_nodes = importlib.import_module(".nodes", "ifcsverchok")
     auto_gather_node_classes(extra_nodes)
     menu = make_menu()
     menu_category_provider = SvExCategoryProvider("IFCSVERCHOK", menu)
-    register_extra_category_provider(menu_category_provider)  # if 'IFCSVERCHOK' in nodeitems_utils._node_categories:
+    register_extra_category_provider(
+        menu_category_provider
+    )  # if 'IFCSVERCHOK' in nodeitems_utils._node_categories:
     nodeitems_utils.register_node_categories("IFCSVERCHOK", menu)
     our_menu_classes = make_extra_category_menus()
 
@@ -158,3 +300,5 @@ def unregister():
             print(e)
     unregister_extra_category_provider("IFCSVERCHOK")
     unregister_nodes()
+    for klass in CLASSES:
+        bpy.utils.unregister_class(klass)

src/ifcsverchok/ifcstore.py

@@ -0,0 +1,100 @@
+# import os
+import bpy
+# import uuid
+# import hashlib
+# import zipfile
+# import tempfile
+import ifcopenshell
+from ifcopenshell import template
+# import blenderbim.bim.handler
+# from pathlib import Path
+
+class SvIfcStore:
+    path = ""
+    file = None
+    schema = None
+    cache = None
+    cache_path = None
+    id_map = {}
+    guid_map = {}
+    deleted_ids = set()
+    edited_objs = set()
+    pset_template_path = ""
+    pset_template_file = None
+    library_path = ""
+    library_file = None
+    element_listeners = set()
+    undo_redo_stack_objects = set()
+    undo_redo_stack_object_names = {}
+    current_transaction = ""
+    last_transaction = ""
+    history = []
+    future = []
+    schema_identifiers = ["IFC4", "IFC2X3"]
+
+    @staticmethod
+    def purge():
+        SvIfcStore.path = ""
+        SvIfcStore.file = None
+        SvIfcStore.schema = None
+        SvIfcStore.cache = None
+        SvIfcStore.cache_path = None
+        SvIfcStore.id_map = {}
+        SvIfcStore.guid_map = {}
+        SvIfcStore.deleted_ids = set()
+        SvIfcStore.edited_objs = set()
+        SvIfcStore.pset_template_path = ""
+        SvIfcStore.pset_template_file = None
+        SvIfcStore.library_path = ""
+        SvIfcStore.library_file = None
+        SvIfcStore.last_transaction = ""
+        SvIfcStore.history = []
+        SvIfcStore.future = []
+        SvIfcStore.schema_identifiers = ["IFC4", "IFC2X3"]
+
+
+    @staticmethod
+    def create_boilerplate():
+
+        file = template.create(
+            filename="IfcSverchokDemoFile",
+            organization=None,
+            creator=None,
+            project_name="IfcSverchokDemoProject",
+            )
+        if bpy.context.scene.unit_settings.system == 'IMPERIAL':
+            #TODO change units to imperial
+            pass
+        # model = ifcopenshell.api.run("context.add_context", file, context_type="Model")
+        model = ifcopenshell.util.representation.get_context(file, context="Model")
+        print("model: ", model)
+        context = ifcopenshell.api.run(
+            "context.add_context",
+            file,
+            context_type="Model",
+            context_identifier="Body",
+            target_view="MODEL_VIEW",
+            parent=model,
+        )
+        # site = ifcopenshell.api.run("root.create_entity", file, ifc_class="IfcSite", name="My Site")
+        # building = ifcopenshell.api.run(
+        #     "root.create_entity", file, ifc_class="IfcBuilding", name="My Building"
+        # )
+        # building_storey = ifcopenshell.api.run(
+        #     "root.create_entity", file, ifc_class="IfcBuildingStorey", name="My Storey"
+        # )
+
+        # ifcopenshell.api.run("aggregate.assign_object", file, product=site, relating_object=file.by_type("IfcProject")[0])
+        # ifcopenshell.api.run("aggregate.assign_object", file, product=building, relating_object=site)
+        # ifcopenshell.api.run("aggregate.assign_object", file, product=building_storey, relating_object=building)
+
+        SvIfcStore.file = file
+        return SvIfcStore.file
+ 
+
+
+    @staticmethod
+    def get_file():
+        if SvIfcStore.file is None:
+            SvIfcStore.create_boilerplate()
+        return SvIfcStore.file

src/ifcsverchok/nodes/ifc/add_pset.py

@@ -0,0 +1,75 @@
+import bpy
+
+import ifcopenshell
+import ifcsverchok.helper
+from ifcsverchok.ifcstore import SvIfcStore
+
+import bpy
+import json
+import ifcopenshell
+
+from bpy.props import StringProperty
+from sverchok.node_tree import SverchCustomTreeNode
+from sverchok.data_structure import updateNode
+
+
+class SvIfcAddPset(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
+    bl_idname = "SvIfcAddPset"
+    bl_label = "IFC Add Pset"
+    Name: StringProperty(name="Name", update=updateNode, default="My_Pset")
+    Properties: StringProperty(name="Properties", update=updateNode, default="{\"Foo\":\"Bar\"}")
+    Elements: StringProperty(name="Elements", update=updateNode)
+
+    def sv_init(self, context):
+        self.inputs.new("SvStringsSocket", "Name").prop_name = "Name"
+        self.inputs.new("SvTextSocket", "Properties").prop_name = "Properties"
+        self.inputs.new("SvStringsSocket", "Elements").prop_name = "Elements"
+        self.outputs.new("SvStringsSocket", "entity")
+        self.outputs.new("SvStringsSocket", "file")
+
+    def process(self):
+        if not any(socket.is_linked for socket in self.outputs):
+            return
+
+        name = self.inputs["Name"].sv_get()[0][0]
+        properties = self.inputs["Properties"].sv_get()[0][0]
+        elements = self.inputs["Elements"].sv_get()[0]
+
+        if SvIfcStore.file is None:
+            SvIfcStore.file = SvIfcStore.create_boilerplate()
+        self.file = SvIfcStore.get_file()
+
+        if self.node_id not in SvIfcStore.id_map.values():
+            element = self.create(name, properties, elements)
+        else:
+            element = self.edit(name, properties, elements)
+
+        self.outputs["entity"].sv_set([[element]])
+        self.outputs["file"].sv_set([[self.file]])
+
+    def create(self, name, properties, elements):
+        results = []
+        for element in elements:
+            result = ifcopenshell.api.run("pset.add_pset", self.file, product=element, name=name)
+            ifcopenshell.api.run("pset.edit_pset", self.file, pset=result, properties=json.loads(properties))
+            SvIfcStore.id_map[result.id()] = self.node_id
+            results.append(result)
+        return result
+
+    def edit(self, name, properties, elements):
+        result = self.get_existing_element()
+        ifcopenshell.api.run("pset.edit_pset", self.file, pset=result, name=name, properties=json.loads(properties))
+        return result
+
+    def get_existing_element(self):
+        entity_id = list(SvIfcStore.id_map.keys())[list(SvIfcStore.id_map.values()).index(self.node_id)]
+        return self.file.by_id(entity_id)
+
+
+def register():
+    bpy.utils.register_class(SvIfcAddPset)
+
+
+def unregister():
+    bpy.utils.unregister_class(SvIfcAddPset)
+    SvIfcStore.purge()

src/ifcsverchok/nodes/ifc/add_spatial_element.py

@@ -0,0 +1,149 @@
+import bpy
+
+import ifcopenshell
+import ifcsverchok.helper
+from ifcsverchok.ifcstore import SvIfcStore
+
+from bpy.props import StringProperty
+from sverchok.node_tree import SverchCustomTreeNode
+from sverchok.data_structure import updateNode, flatten_data, repeat_last_for_length, ensure_min_nesting
+
+
+class SvIfcAddSpatialElement(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
+    bl_idname = "SvIfcAddSpatialElement"
+    bl_label = "IFC Add Spatial Element"
+    node_dict = {}
+ 
+    Names: StringProperty(name="Name(s)", update=updateNode)
+    IfcClass: StringProperty(name="IFC Class", update=updateNode, default="IfcSpace")
+    Elements: StringProperty(name="Elements", update=updateNode)
+
+    def sv_init(self, context):
+        self.inputs.new("SvStringsSocket", "Names").prop_name = "Names"
+        self.inputs.new("SvStringsSocket", "IfcClass").prop_name = "IfcClass"
+        self.inputs.new("SvStringsSocket", "Elements").prop_name = "Elements"
+        self.outputs.new("SvStringsSocket", "Entities")
+        self.node_dict[hash(self)] = {}
+    
+    def draw_buttons(self, context, layout):
+        layout.operator("node.sv_ifc_tooltip", text="", icon="QUESTION", emboss=False).tooltip = "Ifc entity by type."
+
+    def process(self):
+        self.sv_input_names = [i.name for i in self.inputs]
+        if hash(self) not in self.node_dict:
+            self.node_dict[hash(self)] = {} #happens if node is already on canvas when blender loads
+        if not self.node_dict[hash(self)]:
+            self.node_dict[hash(self)].update(dict.fromkeys(self.sv_input_names, 0))
+
+        if not any(socket.is_linked for socket in self.outputs):
+            return
+        edit = False
+        edit_elements = False
+        for i in range(len(self.inputs)):
+            input = self.inputs[self.sv_input_names[i]].sv_get(deepcopy=True, default =[])
+            if isinstance(self.node_dict[hash(self)][self.inputs[i].name], list) and input != self.node_dict[hash(self)][self.inputs[i].name]:
+                edit = True
+                if self.inputs[i].name == "Elements":
+                    edit_elements = True
+            self.node_dict[hash(self)][self.inputs[i].name] = input.copy()
+
+        self.names = flatten_data(self.inputs["Names"].sv_get(), target_level=1)
+        self.ifc_class = flatten_data(self.inputs["IfcClass"].sv_get(), target_level=1)[0]
+        self.elements = ensure_min_nesting(self.inputs["Elements"].sv_get(), 2)
+        self.elements = flatten_data(self.elements, target_level=2)
+        if not self.elements[0][0]:
+            raise Exception('Mandatory input "Element(s)" is missing.')
+            return
+        self.file = SvIfcStore.get_file()
+        self.elements = [[self.file.by_id(step_id) for step_id in element] for element in self.elements]
+
+        if "len" not in self.node_dict[hash(self)]:
+            self.node_dict[hash(self)]["len"] = 0
+        self.names = self.repeat_input_unique(self.names, len(self.elements))
+
+        if (self.node_id not in SvIfcStore.id_map) or (len(self.elements) != self.node_dict[hash(self)]["len"]):
+            self.remove()
+            elements = self.create()
+            self.node_dict[hash(self)]["len"] = len(self.elements)
+        else:
+            if edit is True:
+                elements = self.edit(edit_elements)
+            else:
+                elements = SvIfcStore.id_map[self.node_id]
+        self.outputs["Entities"].sv_set(elements)
+
+    def create(self, index=None):
+        spatial_ids = []
+        iterator = range(len(self.elements))
+        if index is not None:
+            iterator = [index]
+        for i in iterator:
+            result = ifcopenshell.api.run("root.create_entity", self.file, name=self.names[i], ifc_class=self.ifc_class)
+            for items in self.elements[i]:
+                if items.is_a("IfcSpatialElement") or items.is_a("IfcSpatialStructureElement"):
+                    ifcopenshell.api.run("aggregate.assign_object", self.file, product=items, relating_object=result)
+                else:
+                    ifcopenshell.api.run("spatial.assign_container", self.file, product=items, relating_structure=result)
+            SvIfcStore.id_map.setdefault(self.node_id, []).append(result.id())
+            spatial_ids.append(result.id())
+        return spatial_ids
+
+    def edit(self, edit_elements):
+        spatial_ids = []
+        id_map_copy = SvIfcStore.id_map[self.node_id].copy()
+        for i, element in enumerate(self.elements):
+            try:
+                result_id = id_map_copy[i]
+            except IndexError:
+                id = self.create(index=i)
+                spatial_ids.append(id[0])
+                continue
+            result = self.file.by_id(result_id)
+            result.Name = self.names[i]
+            if edit_elements:
+                subelements = ifcopenshell.util.element.get_decomposition(result)
+                subelements = set(subelements)
+                for element in self.elements[i]:
+                    element_set = set([element])
+                    for removed_element in subelements - element_set:
+                        if removed_element.is_a("IfcSpatialElement") or removed_element.is_a("IfcSpatialStructureElement"):
+                            ifcopenshell.api.run("aggregate.unassign_object", self.file, product=removed_element, relating_object=result)
+                        else:
+                            ifcopenshell.api.run("spatial.unassign_container", self.file, product=removed_element, relating_object=result)
+                    for added_element in element_set - subelements:
+                        if added_element.is_a("IfcSpatialElement") or added_element.is_a("IfcSpatialStructureElement"):
+                            ifcopenshell.api.run("aggregate.assign_object", self.file, product=added_element, relating_object=result)
+                        else:
+                            ifcopenshell.api.run("spatial.assign_container", self.file, product=added_element, relating_structure=result)
+            spatial_ids.append(result.id())
+        SvIfcStore.id_map[self.node_id] = spatial_ids
+        return spatial_ids
+
+    def remove(self):
+        if self.node_id in SvIfcStore.id_map:
+            for element_id in SvIfcStore.id_map[self.node_id]:
+                element = self.file.by_id(element_id)
+                ifcopenshell.api.run("root.remove_product", self.file, product=element)
+            del SvIfcStore.id_map[self.node_id]
+
+    def repeat_input_unique(self, input, count):
+        input = repeat_last_for_length(input, count, deepcopy=False)
+        if input[0]:
+            input = [a if not (s:=sum(j == a for j in input[:i])) else f'{a}-{s+1}' for i, a in enumerate(input)]  # add number to duplicates
+        return input
+
+    def sv_free(self):
+        try:
+            del SvIfcStore.id_map[self.node_id]
+            del self.node_dict[hash(self)]
+            print('Node was deleted')
+        except KeyError or AttributeError:
+            pass
+
+def register():
+    bpy.utils.register_class(SvIfcAddSpatialElement)
+
+
+def unregister():
+    bpy.utils.unregister_class(SvIfcAddSpatialElement)
+    SvIfcStore.purge()

src/ifcsverchok/nodes/ifc/api.py

@@ -27,6 +27,7 @@ from sverchok.data_structure import updateNode
 
 
 def update_usecase(self, context):
+    print("API - running update usecase!")
     module_usecase = self.get_module_usecase()
     if module_usecase:
         self.generate_node(*module_usecase)
@@ -104,4 +105,4 @@ def register():
 
 def unregister():
     bpy.utils.unregister_class(SvIfcApi)
-    bpy.utils.unregister_class(SvIfcTooltip)
+    bpy.utils.unregister_class(SvIfcTooltip)

src/ifcsverchok/nodes/ifc/api_WIP.py

@@ -0,0 +1,147 @@
+
+# IfcSverchok - IFC Sverchok extension
+# Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of IfcSverchok.
+#
+# IfcSverchok is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcSverchok is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with IfcSverchok.  If not, see <http://www.gnu.org/licenses/>.
+
+import bpy
+import ifcopenshell
+import ifcopenshell.api
+import ifcsverchok.helper
+from bpy.props import StringProperty, EnumProperty
+from sverchok.node_tree import SverchCustomTreeNode
+from sverchok.data_structure import updateNode
+import importlib
+
+
+
+class SvIfcTooltip(bpy.types.Operator):
+    bl_idname = "node.sv_ifc_tooltip"
+    bl_label = "IFC Info"
+    tooltip: bpy.props.StringProperty()
+
+    @classmethod
+    def description(cls, context, properties):
+        return properties.tooltip
+
+    def execute(self, context):
+        return {"FINISHED"}
+
+
+class SvIfcApiWIP(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
+
+    # def update_usecase(self, context):
+    #     # update_usecase is not getting run rn
+#         module_usecase = self.get_module_usecase()
+#         if module_usecase:
+#             self.generate_node(*module_usecase)
+
+    bl_idname = "SvIfcApiWIP"
+    bl_label = "IFC API WIP"
+    tooltip: StringProperty(name="Tooltip")
+    usecase: StringProperty(name="usecase", update=updateNode)
+    current_usecase: StringProperty(name="current_usecase")
+
+    def sv_init(self, context):
+        self.inputs.new("SvStringsSocket", "usecase").prop_name = "usecase"
+        #input_socket.tooltip = "ifcopenshell.api usecase, written like 'module.usecase' \n E.g.: 'project.create_file'"
+        self.outputs.new("SvVerticesSocket", "file")
+
+    def draw_buttons(self, context, layout):
+        op = layout.operator("node.sv_ifc_tooltip", text="", icon="QUESTION", emboss=False).tooltip = "ifcopenshell.api usecase, written like 'module.usecase' \n E.g.: 'project.create_file"
+        # op.tooltip = self.tooltip
+
+    def process(self):
+        self.sv_input_names = ["usecase"]
+        module_usecase = self.inputs["usecase"].sv_get()[0][0]
+        if module_usecase:
+            try:
+                module_usecase = self.get_module_usecase()
+            except:
+                raise Exception(
+                    f"Couldn't run generate_node(). Module usecase: {module_usecase}"
+                )
+            if '.'.join(module_usecase) != self.current_usecase:
+                self.generate_node(*module_usecase)   
+            try:
+                for i in range(0, len(self.inputs)):
+                    input = self.inputs[i].sv_get()
+            except:
+                # This occurs when a blender save file is reloaded
+                self.generate_node(*module_usecase)
+
+            self.sv_input_names = [i.name for i in self.inputs]
+
+            super().process() # super().process() uses zip_long_repeat() which doesn't take objects like bmesh
+            
+
+    def get_module_usecase(self):
+        usecase = self.inputs["usecase"].sv_get()[0][0]
+        if usecase:
+            return usecase.split(".")
+
+    def generate_node(self, module, usecase):
+        importlib.import_module(f"ifcopenshell.api.{module}.{usecase}")
+        local_module = getattr(getattr(ifcopenshell.api, module), usecase)
+
+        node_inputs = {}
+        if hasattr(local_module.Usecase(local_module), "file"):
+            node_inputs["file"] = None
+        node_inputs.update(getattr(local_module.Usecase(local_module), "settings", {}))
+        # print("node inputs: ", node_inputs)
+        
+        while len(self.inputs) > 1:
+            self.inputs.remove(self.inputs[-1])
+        
+        if node_inputs:
+            self.tooltip = ""
+            for name, data in node_inputs.items():
+                setattr(SvIfcApiWIP, name, StringProperty(name=name))
+                self.inputs.new("SvStringsSocket", name).prop_name = name
+                if data is not None:
+                    self.tooltip = f"{name} ({data}): {data}\n"
+                else:
+                    self.tooltip = f"{name}: None\n"
+            self.tooltip = self.tooltip.strip()
+        self.current_usecase = '.'.join([module, usecase])
+
+
+    def process_ifc(self, usecase, *setting_values):
+        
+        if usecase and setting_values:
+            settings = dict(zip(self.sv_input_names[1:], setting_values))
+            settings = {k: v for k, v in settings.items() if v != ""}
+            try:
+                if "file" in settings:
+                    file = settings["file"]
+                    settings.pop("file")
+                    self.outputs["file"].sv_set([ifcopenshell.api.run(usecase, file, **settings)])
+                else:
+                    self.outputs["file"].sv_set([ifcopenshell.api.run(usecase, **settings)])
+            except:
+                raise Exception(f"Couldn't run usecase.")
+                
+
+
+
+def register():
+    bpy.utils.register_class(SvIfcTooltip)
+    bpy.utils.register_class(SvIfcApiWIP)
+
+
+def unregister():
+    bpy.utils.unregister_class(SvIfcApiWIP)
+    bpy.utils.unregister_class(SvIfcTooltip)

src/ifcsverchok/nodes/ifc/bmesh_to_ifc.py

@@ -0,0 +1,219 @@
+# IfcSverchok - IFC Sverchok extension
+# Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of IfcSverchok.
+#
+# IfcSverchok is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcSverchok is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with IfcSverchok.  If not, see <http://www.gnu.org/licenses/>.
+
+from copy import deepcopy
+from decimal import Context
+from email.policy import default
+import bpy
+import ifcopenshell
+import ifcsverchok.helper
+import ifcopenshell.api
+from ifcsverchok.ifcstore import SvIfcStore
+import blenderbim.tool as tool
+import blenderbim.core.geometry as core
+from bpy.props import StringProperty, EnumProperty, IntProperty, BoolProperty, PointerProperty
+from sverchok.node_tree import SverchCustomTreeNode
+from sverchok.data_structure import (updateNode, flatten_data, fixed_iter, flat_iter)
+from blenderbim.bim.module.root.prop import get_contexts
+from sverchok.data_structure import zip_long_repeat, node_id
+from sverchok.core.socket_data import sv_get_socket
+
+from itertools import chain, cycle
+
+class SvIfcBMeshToIfcRepr(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
+    """
+    Triggers: BMesh to Ifc Repr
+    Tooltip: Blender mesh to Ifc Shape Representation
+    """
+    bl_idname = "SvIfcBMeshToIfcRepr"
+    bl_label = "IFC Blender Mesh to IFC Repr"
+    node_dict = {}
+
+    is_scene_dependent = True  # if True and is_interactive then the node will be updated upon scene changes
+
+    def refresh_node(self, context):
+        if self.refresh_local:
+            updateNode(self, context)
+            self.refresh_local = False
+
+    refresh_local: BoolProperty(name="Update Node", description="Update Node", update=refresh_node)
+
+    context_types = [
+        ('Model', 'Model', 'Context type: Model', 0),
+        ('Plan', 'Plan', 'Context type: Plan', 1),
+    ]
+
+    context_identifiers = [
+        ('Body', 'Body', 'Context identifier: Body', 0),
+        ('Annotation', 'Annotation', 'Context identifier: Annotation', 1),
+        ('Box', 'Box', 'Context identifier: Box', 2),
+        ('Axis', 'Axis', 'Context identifier: Axis', 3),
+    ]
+    target_views = [
+        ('MODEL_VIEW', 'MODEL_VIEW', 'Target View: MODEL_VIEW', 0),
+        ('PLAN_VIEW', 'PLAN_VIEW', 'Target View: PLAN_VIEW', 1),
+        ('GRAPH_VIEW', 'GRAPH_VIEW', 'Target View: GRAPH_VIEW', 2),
+        ('SKETCH_VIEW', 'SKETCH_VIEW', 'Target View: SKETCH_VIEW', 3),
+    ]
+    blender_objects: PointerProperty(name="Blender Mesh(es)", description="Blender Mesh Object(s)",update=updateNode, type=bpy.types.Object)
+    context_type: EnumProperty(name="Context Type", description="Default: Model", default="Model",items=context_types,update=updateNode)
+    context_identifier: EnumProperty(name="Context Identifier", description="Default: Body", default="Body", items=context_identifiers, update=updateNode)
+    target_view: EnumProperty(name="Target View", description="Default: MODEL VIEW", default="MODEL_VIEW",items=target_views, update=updateNode)
+    tooltip: StringProperty(name="Tooltip")
+
+
+    def sv_init(self, context):
+        self.inputs.new("SvStringsSocket", "context_type").prop_name = "context_type"
+        self.inputs.new("SvStringsSocket", "context_identifier").prop_name = "context_identifier"
+        self.inputs.new("SvStringsSocket", "target_view").prop_name = "target_view"
+        self.inputs.new("SvObjectSocket", "blender_objects").prop_name = "blender_objects" #no prop for now
+        self.outputs.new("SvVerticesSocket", "Representations")
+        self.outputs.new("SvMatrixSocket", "Locations")
+        
+    def draw_buttons(self, context, layout):
+        layout.operator("node.sv_ifc_tooltip", text="", icon="QUESTION", emboss=False).tooltip = "Blender mesh to Ifc Shape Representation. \nTakes one or multiple geometries."
+        
+        row = layout.row(align=True)
+        row.prop(self, 'is_interactive', icon='SCENE_DATA', icon_only=True)
+        row.prop(self, 'refresh_local', icon='FILE_REFRESH')
+
+    def process(self):
+        self.sv_input_names = [i.name for i in self.inputs]
+
+        if hash(self) not in self.node_dict:
+            self.node_dict[hash(self)] = {} #happens if node is already on canvas when blender loads
+        if not self.node_dict[hash(self)]:
+            self.node_dict[hash(self)].update(dict.fromkeys(self.sv_input_names, 0))
+        
+        if not self.inputs["blender_objects"].sv_get()[0]:
+            return
+        edit = False
+        for i in range(len(self.inputs)):
+            input = self.inputs[i].sv_get(deepcopy=True)
+            if isinstance(self.node_dict[hash(self)][self.inputs[i].name], list) and input != self.node_dict[hash(self)][self.inputs[i].name]:
+                edit = True
+            self.node_dict[hash(self)][self.inputs[i].name] = input.copy()
+        
+        blender_objects = self.inputs["blender_objects"].sv_get()
+        self.file = SvIfcStore.get_file()
+
+        if self.refresh_local:
+            edit = True
+        if self.node_id not in SvIfcStore.id_map:
+            representations, locations = self.create(blender_objects)
+        else:
+            if edit is True:
+                self.edit()
+                representations, locations = self.create(blender_objects)
+            else:
+                representations = SvIfcStore.id_map[self.node_id]["Representations"]
+                locations = SvIfcStore.id_map[self.node_id]["Locations"]
+
+        print("representations: ", representations)
+        print("locations: ", locations)
+
+        self.outputs["Representations"].sv_set(representations)
+        self.outputs["Locations"].sv_set(locations)
+
+    def create(self, blender_objects):
+        representations_ids = []
+        locations = []
+        for blender_object in blender_objects:
+            if blender_object.type == 'MESH':
+                bpy.ops.object.mode_set(mode='OBJECT')
+                bpy.ops.object.select_all(action='DESELECT')
+                blender_object.select_set(True)
+                bpy.ops.object.mode_set(mode='EDIT')
+                bpy.ops.mesh.separate(type='LOOSE')
+                for obj in bpy.context.selected_objects:
+                    representation = ifcopenshell.api.run("geometry.add_representation", self.file, should_run_listeners=False,blender_object = obj, geometry=obj.data, context = self.get_context())
+                    if not representation:
+                        raise Exception("Couldn't create representation. Possibly wrong context.")
+                    representations_ids.append(representation.id())
+                    SvIfcStore.id_map.setdefault(self.node_id, {}).setdefault("Representations", []).append(representation.id())
+                    locations.append(blender_object.matrix_world)
+                    SvIfcStore.id_map.setdefault(self.node_id, {}).setdefault("Locations", []).append(blender_object.matrix_world)
+                bpy.ops.object.mode_set(mode='OBJECT')
+        bpy.ops.object.select_all(action='DESELECT')
+        return representations_ids, locations
+
+    def edit(self):
+        if "Representations" not in SvIfcStore.id_map[self.node_id]:
+            return
+        for step_id in SvIfcStore.id_map[self.node_id]["Representations"]:
+            ifcopenshell.api.run("geometry.remove_representation", self.file, representation=self.file.by_id(step_id))
+        del SvIfcStore.id_map[self.node_id]["Representations"]
+        del SvIfcStore.id_map[self.node_id]["Locations"]
+        return
+
+    def get_existing_element(self):
+        results = []
+        for step_id in SvIfcStore.id_map[self.node_id]["Representations"]:
+            results.append(self.file.by_id(step_id))
+        return results
+
+    def get_context(self):
+        context = ifcopenshell.util.representation.get_context(self.file, self.context_type, self.context_identifier, self.target_view)
+        if not context:
+            parent = ifcopenshell.util.representation.get_context(self.file, self.context_type)
+            if not parent:
+                parent = ifcopenshell.api.run("context.add_context", self.file, context_type=self.context_type)
+            context = ifcopenshell.api.run(
+                "context.add_context",
+                self.file,
+                context_type=self.context_type,
+                context_identifier=self.context_identifier,
+                target_view=self.target_view,
+                parent=parent,
+            )
+            SvIfcStore.id_map.setdefault(self.node_id, {}).setdefault("Contexts", []).append(context.id())
+        return context
+
+
+    def sv_free(self):
+        try:
+            self.file = SvIfcStore.get_file()
+            if "Representations" in SvIfcStore.id_map[self.node_id]:
+                for step_id in SvIfcStore.id_map[self.node_id]["Representations"]:
+                    ifcopenshell.api.run("geometry.remove_representation", self.file, representation=self.file.by_id(step_id))
+
+            if "Contexts" in SvIfcStore.id_map[self.node_id]:
+                for context_id in SvIfcStore.id_map[self.node_id]["Contexts"]:
+                    context = self.file.by_id(context_id)
+                    if not self.file.get_inverse(context):
+                        if self.file.by_id(context_id).ParentContext:
+                            parent = self.file.by_id(context_id).ParentContext
+                        ifcopenshell.api.run("context.remove_context", self.file, context=context)
+                        if parent:
+                            if not self.file.get_inverse(parent):
+                                ifcopenshell.api.run("context.remove_context", self.file, context=parent)
+                        print("Removed context with step ID: ", context_id)
+                        SvIfcStore.id_map[self.node_id]["Contexts"].remove(context_id)
+            del SvIfcStore.id_map[self.node_id]
+            del self.node_dict[hash(self)]
+            print('Node was deleted')
+        except KeyError or AttributeError:
+            pass
+
+
+def register():
+    bpy.utils.register_class(SvIfcBMeshToIfcRepr)
+
+
+def unregister():
+    bpy.utils.unregister_class(SvIfcBMeshToIfcRepr)

src/ifcsverchok/nodes/ifc/by_id.py

@@ -20,29 +20,32 @@
 import bpy
 import ifcopenshell
 import ifcsverchok.helper
+from ifcsverchok.ifcstore import SvIfcStore
 from bpy.props import StringProperty
 from sverchok.node_tree import SverchCustomTreeNode
-from sverchok.data_structure import updateNode
+from sverchok.data_structure import updateNode, flatten_data
 
 
 class SvIfcById(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
     bl_idname = "SvIfcById"
     bl_label = "IFC By Id"
-    file: StringProperty(name="file", update=updateNode)
-    id: StringProperty(name="id", update=updateNode)
+    id: StringProperty(name="Id(s)", update=updateNode, )
 
     def sv_init(self, context):
-        self.inputs.new("SvStringsSocket", "file").prop_name = "file"
         self.inputs.new("SvStringsSocket", "id").prop_name = "id"
-        self.outputs.new("SvStringsSocket", "entity")
+        self.outputs.new("SvStringsSocket", "Entities")
+
+    def draw_buttons(self, context, layout):
+        layout.operator("node.sv_ifc_tooltip", text="", icon="QUESTION", emboss=False).tooltip = "Get IFC element by step id. Takes one or multiple step ids."
 
     def process(self):
-        self.sv_input_names = ["file", "id"]
-        super().process()
-
-    def process_ifc(self, file, id):
-        self.outputs["entity"].sv_set([[file.by_id(int(id))]])
-
+        self.ids = flatten_data(self.inputs["id"].sv_get(), target_level=1)
+        print(self.ids)
+        if not self.ids[0]:
+            return
+        self.file = SvIfcStore.get_file()
+        self.entities = [self.file.by_id(int(step_id)) for step_id in self.ids]
+        self.outputs["Entities"].sv_set(self.entities)
 
 def register():
     bpy.utils.register_class(SvIfcById)

src/ifcsverchok/nodes/ifc/by_type.py

@@ -21,13 +21,14 @@ import bpy
 import ifcopenshell
 import ifcsverchok.helper
 from bpy.props import StringProperty, EnumProperty
+from ifcsverchok.ifcstore import SvIfcStore
 from sverchok.node_tree import SverchCustomTreeNode
-from sverchok.data_structure import updateNode
-
+from sverchok.data_structure import updateNode, flatten_data
+from sverchok.utils.handle_blender_data import keep_enum_reference
 
 def get_ifc_products(self, context):
     ifc_products = getattr(self, "ifc_products", [])
-    file = self.inputs["file"].sv_get()[0][0]
+    file = SvIfcStore.get_file()
     if not file:
         return []
     if ifc_products and file:
@@ -56,12 +57,11 @@ def update_ifc_products(self, context):
     if hasattr(self, "ifc_classes"):
         self.ifc_classes.clear()
 
-
 def get_ifc_classes(self, context):
     ifc_classes = getattr(self, "ifc_classes", [])
     if ifc_classes:
         return self.ifc_classes
-    file = self.inputs["file"].sv_get()[0][0]
+    file = SvIfcStore.get_file()
     if not file:
         return []
     schema = ifcopenshell.ifcopenshell_wrapper.schema_by_name(file.schema)
@@ -83,31 +83,35 @@ def get_ifc_classes(self, context):
 class SvIfcByType(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
     bl_idname = "SvIfcByType"
     bl_label = "IFC By Type"
-    file: StringProperty(name="file", update=updateNode)
-    ifc_product: EnumProperty(items=get_ifc_products, name="Products", update=update_ifc_products)
-    ifc_class: EnumProperty(items=get_ifc_classes, name="Class", update=updateNode)
-    custom_ifc_class: StringProperty(name="Custom Ifc Class", update=updateNode)
+    ifc_product: EnumProperty(items=get_ifc_products, name="IfcProduct", description="Pick an IfcProduct from drop-down.", update=update_ifc_products)
+    ifc_class: EnumProperty(items=get_ifc_classes, name="IfcClass", description="Pick an IfcClass from drop-down.", update=updateNode)
+    custom_ifc_class: StringProperty(name="Custom IfcClass", description="Give the name of your custom IfcClass.", update=updateNode)
 
     def sv_init(self, context):
-        self.inputs.new("SvStringsSocket", "file").prop_name = "file"
         self.inputs.new("SvStringsSocket", "ifc_product").prop_name = "ifc_product"
         self.inputs.new("SvStringsSocket", "ifc_class").prop_name = "ifc_class"
         self.inputs.new("SvStringsSocket", "custom_ifc_class").prop_name = "custom_ifc_class"
-        self.outputs.new("SvStringsSocket", "entity")
+        self.outputs.new("SvStringsSocket", "Entity")
+        self.width = 200
+    
+    def draw_buttons(self, context, layout):
+        layout.operator("node.sv_ifc_tooltip", text="", icon="QUESTION", emboss=False).tooltip = "Get IFC element(s) in file by type. \nPick an IfcProduct and an IfcClass or give a custom IfcClass."
 
     def process(self):
-        file = self.inputs["file"].sv_get()[0][0]
-        if file:
+        self.file = SvIfcStore.get_file()
+        if self.file:
             self.ifc_products = get_ifc_products(self, bpy.context)
             self.ifc_classes = get_ifc_classes(self, bpy.context)
-        self.sv_input_names = ["file", "ifc_product", "ifc_class", "custom_ifc_class"]
+        self.sv_input_names = ["ifc_product", "ifc_class", "custom_ifc_class"]
         super().process()
 
-    def process_ifc(self, file, ifc_product, ifc_class, custom_ifc_class):
+    def process_ifc(self, ifc_product, ifc_class, custom_ifc_class):
         if custom_ifc_class:
-            self.outputs["entity"].sv_set([file.by_type(custom_ifc_class)])
+            self.outputs["Entity"].sv_set([self.file.by_type(custom_ifc_class)])
+        elif ifc_class:
+            self.outputs["Entity"].sv_set([self.file.by_type(ifc_class)])
         else:
-            self.outputs["entity"].sv_set([file.by_type(ifc_class)])
+            self.outputs["Entity"].sv_set([])
 
 
 def register():
@@ -115,4 +119,4 @@ def register():
 
 
 def unregister():
-    bpy.utils.unregister_class(SvIfcByType)
+    bpy.utils.unregister_class(SvIfcByType)

src/ifcsverchok/nodes/ifc/create_entity.py

@@ -1,111 +1,185 @@
+import bpy
+from mathutils import Matrix, Vector
+import ifcopenshell
+import ifcsverchok.helper
+from ifcsverchok.ifcstore import SvIfcStore
 
-# IfcSverchok - IFC Sverchok extension
-# Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
-#
-# This file is part of IfcSverchok.
-#
-# IfcSverchok is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# IfcSverchok is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with IfcSverchok.  If not, see <http://www.gnu.org/licenses/>.
+# import ifcsverchok.ifc_store
+# from bpy.props import StringProperty
+# from sverchok.node_tree import SverchCustomTreeNode
+# from sverchok.data_structure import updateNode
 
 import bpy
 import ifcopenshell
-import ifcsverchok.helper
-from bpy.props import StringProperty
+
+from bpy.props import StringProperty, EnumProperty, IntProperty, BoolProperty
 from sverchok.node_tree import SverchCustomTreeNode
-from sverchok.data_structure import updateNode
+from sverchok.data_structure import updateNode, flatten_data, repeat_last_for_length
 
 
 class SvIfcCreateEntity(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
     bl_idname = "SvIfcCreateEntity"
     bl_label = "IFC Create Entity"
-    file: StringProperty(name="file", update=updateNode)
-    ifc_class: StringProperty(name="ifc_class", update=updateNode)
-    current_ifc_class: StringProperty(name="current_ifc_class")
+    node_dict = {}
+
+    is_scene_dependent = True  # if True and is_interactive then the node will be updated upon scene changes
+
+    def refresh_node(self, context):
+        if self.refresh_local:
+            self.process()
+            self.refresh_local = False
+
+    refresh_local: BoolProperty(name="Update Node", description="Update Node", update=refresh_node)
+
+    Names: StringProperty(name="Names", default="", update=updateNode)
+    Descriptions: StringProperty(name="Descriptions", default="", update=updateNode)
+    IfcClass: StringProperty(name="IfcClass", update=updateNode)
+    Representations: StringProperty(name="Representations", default="", update=updateNode)
+    # Locations: FloatVectorProperty(name="Locations", default="", update=updateNode)
+    Properties: StringProperty(name="properties", update=updateNode)
 
     def sv_init(self, context):
-        self.inputs.new("SvStringsSocket", "file").prop_name = "file"
-        self.inputs.new("SvStringsSocket", "ifc_class").prop_name = "ifc_class"
-        self.outputs.new("SvStringsSocket", "file")
-        self.outputs.new("SvStringsSocket", "entity")
+        self.inputs.new("SvStringsSocket", "Names").prop_name = "Names"
+        self.inputs.new("SvStringsSocket", "Descriptions").prop_name = "Descriptions"
+        self.inputs.new("SvStringsSocket", "IfcClass").prop_name = "IfcClass"
+        self.inputs.new("SvStringsSocket", "Representations").prop_name = "Representations"
+        self.inputs.new("SvMatrixSocket", "Locations").is_mandatory=False
+        self.inputs.new("SvStringsSocket", "Properties").prop_name = "Properties"
+        self.outputs.new("SvStringsSocket", "Entities")
+        self.node_dict[hash(self)] = {}
+
+    def draw_buttons(self, context, layout):
+        layout.operator("node.sv_ifc_tooltip", text="", icon="QUESTION", emboss=False).tooltip = "Create IFC Entity. Takes one or multiple inputs. \nIf 'Representation(s)' is given, that determines number of output entities. Otherwise, 'Names' is used."
+        
+        row = layout.row(align=True)
+        row.prop(self, 'is_interactive', icon='SCENE_DATA', icon_only=True)
+        row.prop(self, 'refresh_local', icon='FILE_REFRESH')
 
     def process(self):
-        self.sv_input_names = ["file", "ifc_class"]
-        ifc_class = self.inputs["ifc_class"].sv_get()[0][0]
-        if ifc_class:
-            file = self.inputs["file"].sv_get()[0][0]
-            if file:
-                schema_name = file.wrapped_data.schema
+        
+        self.names = flatten_data(self.inputs["Names"].sv_get(), target_level=1)
+        self.descriptions = flatten_data(self.inputs["Descriptions"].sv_get(), target_level=1)
+        self.ifc_class = flatten_data(self.inputs["IfcClass"].sv_get(), target_level=1)[0]
+        self.representations = flatten_data(self.inputs["Representations"].sv_get(), target_level=1)
+        self.locations = flatten_data(self.inputs["Locations"].sv_get(default=[]), target_level=1)
+        self.properties = self.inputs["Properties"].sv_get()
+    
+
+        self.sv_input_names = [i.name for i in self.inputs]
+
+        if hash(self) not in self.node_dict:
+            self.node_dict[hash(self)] = {} #happens if node is already on canvas when blender loads
+        if not self.node_dict[hash(self)]:
+            self.node_dict[hash(self)].update(dict.fromkeys(self.sv_input_names, 0))
+        if not self.inputs["IfcClass"].sv_get()[0][0]:
+            raise Exception('Mandatory input "IfcClass" is missing.')
+
+        edit = False
+        for i in range(len(self.inputs)):
+            input = self.inputs[self.sv_input_names[i]].sv_get(deepcopy=True, default =[])
+            if isinstance(self.node_dict[hash(self)][self.inputs[i].name], list) and input != self.node_dict[hash(self)][self.inputs[i].name]:
+                edit = True
+            self.node_dict[hash(self)][self.inputs[i].name] = input.copy()
+
+        if self.refresh_local:
+            edit = True
+        
+        self.file = SvIfcStore.get_file()
+        if self.representations[0]:
+            try:
+                self.representations = [self.file.by_id(step_id) for step_id in self.representations]
+            except Exception as e:
+                raise
+            self.names = self.repeat_input_unique(self.names, len(self.representations))
+            self.descriptions = self.repeat_input_unique(self.descriptions, len(self.representations))
+        elif not self.representations[0]:
+            self.descriptions = self.repeat_input_unique(self.descriptions, len(self.names))
+
+        if self.node_id not in SvIfcStore.id_map:
+            entities = self.create()
+        else:
+            if edit is True:
+                entities = self.edit()
             else:
-                schema_name = "IFC4"
-            self.schema = ifcopenshell.ifcopenshell_wrapper.schema_by_name(schema_name)
-            self.entity_schema = self.schema.declaration_by_name(ifc_class)
+                entities = SvIfcStore.id_map[self.node_id]
+        
+        print("Entities: ", entities)
 
-            if ifc_class != self.current_ifc_class:
-                self.generate_inputs(ifc_class)
+        self.outputs["Entities"].sv_set(entities)
+
+    def create(self, index=None):
+        entities_ids = []
+        iterator = range(len(self.names))
+        if index is not None:
+            iterator = [index]
+        for i in iterator:
             try:
-                for i in range(0, len(self.inputs)):
-                    self.inputs[i].sv_get()
-            except:
-                # This occurs when a blender save file is reloaded
-                self.generate_inputs(ifc_class)
+                entity = ifcopenshell.api.run("root.create_entity", self.file, ifc_class=self.ifc_class, name=self.names[i], description=self.descriptions[i])
+                try:
+                    if self.representations[i]:
+                        ifcopenshell.api.run("geometry.assign_representation", self.file, product=entity, representation=self.representations[i])
+                except IndexError:
+                    pass
+                try:
+                    if isinstance(self.locations[i], Matrix):
+                        ifcopenshell.api.run("geometry.edit_object_placement", self.file, product=entity, matrix=self.locations[i])
+                except IndexError:
+                    pass
+                entities_ids.append(entity.id())
+                SvIfcStore.id_map.setdefault(self.node_id, []).append(entity.id())
+            except Exception as e: 
+                raise Exception("Something went wrong. Cannot create entity.", e)
+        return entities_ids
 
-            for i in range(0, self.entity_schema.attribute_count()):
-                self.sv_input_names.append(self.entity_schema.attribute_by_index(i).name())
-        super().process()
-
-    def generate_inputs(self, ifc_class):
-        while len(self.inputs) > 2:
-            self.inputs.remove(self.inputs[-1])
-        for i in range(0, self.entity_schema.attribute_count()):
-            name = self.entity_schema.attribute_by_index(i).name()
-            setattr(SvIfcCreateEntity, name, StringProperty(name=name))
-            self.inputs.new("SvStringsSocket", name).prop_name = name
-        self.current_ifc_class = ifc_class
-
-    def process_ifc(self, file, ifc_class, *attributes):
-        entity = file.create_entity(ifc_class)
-        for i in range(0, len(entity)):
+    def edit(self):
+        entities_ids = []
+        id_map_copy = SvIfcStore.id_map[self.node_id].copy()
+        for i, _ in enumerate(self.names):
             try:
-                value = attributes[i]
-                if isinstance(value, str) and value == "":
-                    value = None
-            except:
-                value = None
-            if value is None and entity.is_a("IfcRoot") and i == 0:
-                value = ifcopenshell.guid.new()
-            if value is not None:
-                value = self.cast_value(self.entity_schema.attribute_by_index(i), value)
+                step_id = id_map_copy[i]
+            except IndexError:
+                id = self.create(index=i)
+                entities_ids.append(id[0])
+                continue
+            entity = self.file.by_id(step_id)
+            entity.Name = self.names[i]
+            entity.Description = self.descriptions[i]
+
             try:
-                entity[i] = value
-            except:
-                raise Exception(
-                    "The IFC class {} requires a valid value for {} - you provided {}".format(
-                        ifc_class, entity.attribute_name(i), value
-                    )
-                )
-        self.outputs["file"].sv_set([[file]])
-        self.outputs["entity"].sv_set([[entity]])
+                if self.representations[i] and self.representations[i].is_a('IfcProductDefinitionShape'):
+                    entity.Representation = self.representations[i]
+                elif self.representations[i]:
+                    ifcopenshell.api.run("geometry.assign_representation", self.file, product=entity, representation=self.representations[i])
+            except IndexError:
+                pass
+            try:
+                if isinstance(self.locations[i], Matrix):
+                    ifcopenshell.api.run("geometry.edit_object_placement", self.file, product=entity, matrix=self.locations[i])
+            except IndexError:
+                pass
+            if entity.is_a() != self.ifc_class:
+                SvIfcStore.id_map[self.node_id].remove(step_id)
+                entity = ifcopenshell.util.schema.reassign_class(self.file, entity, self.ifc_class)
+                SvIfcStore.id_map.setdefault(self.node_id, []).append(entity.id())
+            entities_ids.append(entity.id())
 
-    def cast_value(self, attribute, value):
-        data_type = self.get_attribute_data_type(attribute.type_of_attribute())
-        if data_type == "integer":
-            value = int(value)
-        return value
+        if id_map_copy>entities_ids:
+            SvIfcStore.id_map[self.node_id] = entities_ids
+        return entities_ids
 
-    def get_attribute_data_type(self, data_type):
-        if hasattr(data_type, "declared_type"):
-            return self.get_attribute_data_type(data_type.declared_type())
-        return data_type
+    def repeat_input_unique(self, input, count):
+        input = repeat_last_for_length(input, count, deepcopy=False)
+        if input[0]:
+            input = [a if not (s:=sum(j == a for j in input[:i])) else f'{a}-{s+1}' for i, a in enumerate(input)]  # add number to duplicates
+        return input
+    
+    def sv_free(self):
+        try:
+            del SvIfcStore.id_map[self.node_id]
+            del self.node_dict[hash(self)]
+            print('Node was deleted')
+        except KeyError or AttributeError:
+            pass
 
 
 def register():

src/ifcsverchok/nodes/ifc/create_file.py

@@ -1,4 +1,3 @@
-
 # IfcSverchok - IFC Sverchok extension
 # Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
 #

src/ifcsverchok/nodes/ifc/create_project.py

@@ -0,0 +1,79 @@
+# IfcSverchok - IFC Sverchok extension
+# Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of IfcSverchok.
+#
+# IfcSverchok is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcSverchok is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with IfcSverchok.  If not, see <http://www.gnu.org/licenses/>.
+
+import bpy
+import ifcopenshell
+import ifcsverchok.helper
+from bpy.props import StringProperty
+from sverchok.node_tree import SverchCustomTreeNode
+from sverchok.data_structure import updateNode
+# from ifcopenshell import template
+
+class SvIfcCreateProject(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
+    bl_idname = "SvIfcCreateProject"
+    bl_label = "IFC Create Project"
+
+    def sv_init(self, context):
+        input_socket = self.inputs.new("SvStringsSocket", "file")
+        input_socket.tooltip = "ifc file to add the project to"
+        input_socket = self.inputs.new("SvStringsSocket", "project_name")
+        input_socket.tooltip = "Project name"
+        self.outputs.new("SvVerticesSocket", "file")
+
+    def draw_buttons(self, context, layout):
+        op = layout.operator("node.sv_ifc_tooltip", text="", icon="QUESTION", emboss=False).tooltip = "Adds project, unit and context to IFC file"
+        #op.tooltip = self.tooltip
+
+    def process(self):
+        #file
+        file = self.inputs["file"].sv_get()[0][0]
+        if file:
+            schema_name = file.wrapped_data.schema
+        else:
+            schema_name = "IFC4"
+        
+        #project name
+        project_name = self.inputs["project_name"].sv_get()[0][0]
+        self.process_ifc(file, project_name)
+        
+
+    def process_ifc(self, file, project_name):
+        
+        # create project 
+        project = ifcopenshell.api.run("root.create_entity", file, ifc_class="IfcProject", name=str(project_name))
+        lengthunit = ifcopenshell.api.run("unit.add_si_unit", file, unit_type="LENGTHUNIT", name="METRE")
+        ifcopenshell.api.run("unit.assign_unit", file, units=[lengthunit])
+        model = ifcopenshell.api.run("context.add_context", file, context_type="Model")
+        context = ifcopenshell.api.run(
+            "context.add_context",
+            file,
+            context_type="Model",
+            context_identifier="Body",
+            target_view="MODEL_VIEW",
+            parent=model,
+        )
+
+        self.outputs["file"].sv_set([[file]])
+
+
+def register():
+    bpy.utils.register_class(SvIfcCreateProject)
+
+
+def unregister():
+    bpy.utils.unregister_class(SvIfcCreateProject)

src/ifcsverchok/nodes/ifc/create_shape.py

@@ -21,65 +21,100 @@ import bpy
 import logging
 import ifcopenshell
 import ifcsverchok.helper
+from ifcsverchok.ifcstore import SvIfcStore
 import blenderbim.bim.import_ifc
-from bpy.props import StringProperty
+from bpy.props import StringProperty, PointerProperty, BoolProperty
 from sverchok.node_tree import SverchCustomTreeNode
-from sverchok.data_structure import updateNode
+from sverchok.data_structure import updateNode, flatten_data
 
 
-class SvIfcCreateShapeRefresh(bpy.types.Operator):
-    bl_idname = "node.sv_ifc_create_shape_refresh"
-    bl_label = "IFC Create Shape Refresh"
-    bl_options = {"UNDO"}
+# class SvIfcCreateShapeRefresh(bpy.types.Operator):
+#     bl_idname = "node.sv_ifc_create_shape_refresh"
+#     bl_label = "IFC Create Shape Refresh"
+#     bl_options = {"UNDO"}
 
-    tree_name: StringProperty(default="")
-    node_name: StringProperty(default="")
 
-    def execute(self, context):
-        node = bpy.data.node_groups[self.tree_name].nodes[self.node_name]
-        node.process()
-        return {"FINISHED"}
+#     tree_name: StringProperty(default="")
+#     node_name: StringProperty(default="")
+
+#     def execute(self, context):
+#         node = bpy.data.node_groups[self.tree_name].nodes[self.node_name]
+#         node.process()
+#         return {"FINISHED"}
 
 
 class SvIfcCreateShape(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
+    """
+    Triggers: Ifc create shape by entity
+    Tooltip: Create Blender shape by Ifc Entity
+    """
+    is_scene_dependent = True
+    is_interactive = False
+    node_dict = {}
+    def refresh_node(self, context):
+        if self.refresh_local:
+            self.process()
+            self.refresh_local = False
+
+    refresh_local: BoolProperty(name="Create shape(s)", description="Update Node", update=refresh_node)
+
     bl_idname = "SvIfcCreateShape"
-    bl_label = "IFC Create Shape"
-    file: StringProperty(name="file", update=updateNode)
-    entity: StringProperty(name="entity", update=updateNode)
+    bl_label = "IFC Create Blender Shape"
+    entity: StringProperty(name="Entities", update=updateNode)
+    
 
     def sv_init(self, context):
-        self.inputs.new("SvStringsSocket", "file").prop_name = "file"
-        self.inputs.new("SvStringsSocket", "entity").prop_name = "entity"
+        self.inputs.new("SvStringsSocket", "Entities").prop_name = "entity"
+        self.outputs.new('SvStringsSocket', "Object(s)")
 
     def draw_buttons(self, context, layout):
-        self.wrapper_tracked_ui_draw_op(layout, "node.sv_ifc_create_shape_refresh", icon="FILE_REFRESH", text="Refresh")
+        row = layout.row(align=True)
+        row.operator("node.sv_ifc_tooltip", text="", icon="QUESTION", emboss=False).tooltip = "Create Blender shape from IfcEntity ID. Takes one or multiple IfcEntity IDs."
+        row.prop(self, 'refresh_local', icon='FILE_REFRESH')
 
     def process(self):
-        self.sv_input_names = ["file", "entity"]
-        super().process()
-
-    def process_ifc(self, file, entity):
-        try:
-            if not entity.is_a("IfcProduct"):
-                return
-            logger = logging.getLogger("ImportIFC")
-            self.ifc_import_settings = blenderbim.bim.import_ifc.IfcImportSettings.factory(bpy.context, "", logger)
-            settings = ifcopenshell.geom.settings()
-            shape = ifcopenshell.geom.create_shape(settings, entity)
-            ifc_importer = blenderbim.bim.import_ifc.IfcImporter(self.ifc_import_settings)
-            ifc_importer.file = file
-            mesh = ifc_importer.create_mesh(entity, shape)
-            obj = bpy.data.objects.new("IFC Element", mesh)
-            bpy.context.scene.collection.objects.link(obj)
-        except:
-            print("Entity could not be converted into a shape", entity)
+        self.entities = flatten_data(self.inputs["Entities"].sv_get(), target_level = 1)
+        if not self.entities[0]:
+            return
+        
+        if self.refresh_local or hash(self) not in self.node_dict:
+            self.file = SvIfcStore.get_file()
+            try:
+                self.entities = [self.file.by_id(step_id) for step_id in self.entities]
+            except Exception as e:
+                raise
+            blender_objects = self.create()
+            self.node_dict[hash(self)] = blender_objects
+        else:
+            blender_objects = self.node_dict[hash(self)]
+        
+        self.outputs["Object(s)"].sv_set(blender_objects)
 
+    def create(self):
+        blender_objects = []
+        for entity in self.entities:
+            try:
+                if not entity.is_a("IfcProduct"):
+                    return
+                logger = logging.getLogger("ImportIFC")
+                self.ifc_import_settings = blenderbim.bim.import_ifc.IfcImportSettings.factory(bpy.context, "", logger)
+                settings = ifcopenshell.geom.settings()
+                shape = ifcopenshell.geom.create_shape(settings, entity)
+                ifc_importer = blenderbim.bim.import_ifc.IfcImporter(self.ifc_import_settings)
+                ifc_importer.file = self.file
+                mesh = ifc_importer.create_mesh(entity, shape)
+                obj = bpy.data.objects.new("IFC Element", mesh)
+                blender_objects.append(obj)
+                bpy.context.scene.collection.objects.link(obj)
+            except:
+                raise Exception("Entity could not be converted into a shape. Entity: {}".format(entity))
+        return blender_objects
 
 def register():
-    bpy.utils.register_class(SvIfcCreateShapeRefresh)
+    # bpy.utils.register_class(SvIfcCreateShapeRefresh)
     bpy.utils.register_class(SvIfcCreateShape)
 
 
 def unregister():
     bpy.utils.unregister_class(SvIfcCreateShape)
-    bpy.utils.unregister_class(SvIfcCreateShapeRefresh)
+    # bpy.utils.unregister_class(SvIfcCreateShapeRefresh)

src/ifcsverchok/nodes/ifc/pick_ifc_class.py

@@ -0,0 +1,108 @@
+
+# IfcSverchok - IFC Sverchok extension
+# Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of IfcSverchok.
+#
+# IfcSverchok is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcSverchok is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with IfcSverchok.  If not, see <http://www.gnu.org/licenses/>.
+
+import bpy
+import ifcopenshell
+import ifcsverchok.helper
+from bpy.props import StringProperty, EnumProperty
+from ifcsverchok.ifcstore import SvIfcStore
+from sverchok.node_tree import SverchCustomTreeNode
+from sverchok.data_structure import updateNode
+
+def get_ifc_products(self, context):
+    ifc_products = getattr(self, "ifc_products", [])
+    file = SvIfcStore.get_file()
+    if not file:
+        return []
+    if ifc_products and file:
+        return ifc_products
+    ifc_products = []
+    ifc_products.extend(
+        [
+            (e, e, "")
+            for e in [
+                "IfcElement",
+                "IfcElementType",
+                "IfcSpatialElement",
+                "IfcGroup",
+                "IfcStructuralItem",
+                "IfcContext",
+                "IfcAnnotation",
+            ]
+        ]
+    )
+    if file.schema == "IFC2X3":
+        ifc_products[2] = ("IfcSpatialStructureElement", "IfcSpatialStructureElement", "")
+    return ifc_products
+
+
+def update_ifc_products(self, context):
+    if hasattr(self, "ifc_classes"):
+        self.ifc_classes.clear()
+
+
+def get_ifc_classes(self, context):
+    ifc_classes = getattr(self, "ifc_classes", [])
+    if ifc_classes:
+        return self.ifc_classes
+    file = SvIfcStore.get_file()
+    if not file:
+        return []
+    schema = ifcopenshell.ifcopenshell_wrapper.schema_by_name(file.schema)
+    declaration = schema.declaration_by_name(self.ifc_product)
+
+    def get_classes(declaration):
+        results = []
+        if not declaration.is_abstract():
+            results.append(declaration.name())
+        for subtype in declaration.subtypes():
+            results.extend(get_classes(subtype))
+        return results
+
+    classes = get_classes(declaration)
+    ifc_classes.extend([(c, c, "") for c in sorted(classes)])
+    return ifc_classes
+
+
+class SvIfcPickIfcClass(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
+    bl_idname = "SvIfcPickIfcClass"
+    bl_label = "IFC Class Picker"
+    ifc_product: EnumProperty(items=get_ifc_products, name="IfcProduct", description="Pick an IfcProduct from drop-down.", update=update_ifc_products)
+    ifc_class: EnumProperty(items=get_ifc_classes, name="IfcClass", description="Pick an IfcClass from drop-down.", update=updateNode)
+
+    def sv_init(self, context):
+        self.inputs.new("SvStringsSocket", "ifc_product").prop_name = "ifc_product"
+        self.inputs.new("SvStringsSocket", "ifc_class").prop_name = "ifc_class"
+        self.outputs.new("SvStringsSocket", "IfcClass")
+        self.width = 200
+    
+    def draw_buttons(self, context, layout):
+        layout.operator("node.sv_ifc_tooltip", text="", icon="QUESTION", emboss=False).tooltip = "Ifc Class Picker"
+
+    def process(self):
+        ifc_class = self.inputs["ifc_class"].sv_get()[0][0]
+        self.outputs["IfcClass"].sv_set([ifc_class])
+
+
+def register():
+    bpy.utils.register_class(SvIfcPickIfcClass)
+
+
+def unregister():
+    bpy.utils.unregister_class(SvIfcPickIfcClass)

src/ifcsverchok/nodes/ifc/quick_project_setup.py

@@ -0,0 +1,93 @@
+# IfcSverchok - IFC Sverchok extension
+# Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of IfcSverchok.
+#
+# IfcSverchok is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcSverchok is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with IfcSverchok.  If not, see <http://www.gnu.org/licenses/>.
+
+from email.mime import application
+import bpy
+import ifcopenshell
+import ifcsverchok.helper
+from bpy.props import StringProperty
+from sverchok.node_tree import SverchCustomTreeNode
+from sverchok.data_structure import updateNode
+from ifcopenshell import template
+
+class SvIfcQuickProjectSetup(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
+    bl_idname = "SvIfcQuickProjectSetup"
+    bl_label = "IFC Quick Project Setup"
+    schema_identifier: StringProperty(name="schema_identifier", update=updateNode, default="IFC4")
+    timestring: StringProperty(name="timestring", update=updateNode)
+    application: StringProperty(name="application", update=updateNode)
+    application_version: StringProperty(name="application_version", update=updateNode)
+    timestamp: StringProperty(name="timestamp", update=updateNode)
+    
+
+    def sv_init(self, context):
+        input_socket = self.inputs.new("SvStringsSocket", "filename")
+        input_socket.tooltip = "Ifc file name"
+        input_socket = self.inputs.new("SvStringsSocket", "timestring")
+        input_socket.tooltip = "Timestring, default = current time"
+        input_socket = self.inputs.new("SvStringsSocket", "organization")
+        input_socket.tooltip = "Organization"
+        input_socket = self.inputs.new("SvStringsSocket", "creator")
+        input_socket.tooltip = "creator"
+        input_socket = self.inputs.new("SvStringsSocket", "schema_identifier")
+        input_socket.tooltip = "Schema, default = 'IFC4'"
+        input_socket = self.inputs.new("SvStringsSocket", "application_version")
+        input_socket.tooltip = "Application version"
+        input_socket = self.inputs.new("SvStringsSocket", "timestamp")
+        input_socket.tooltip = "Timestamp, default = current time"
+        input_socket = self.inputs.new("SvStringsSocket", "application")
+        input_socket.tooltip = "Application, default = 'IfcOpenShell'"
+        input_socket = self.inputs.new("SvStringsSocket", "project_globalid")
+        input_socket.tooltip = "Project GlobalId"
+        input_socket = self.inputs.new("SvStringsSocket", "project_name")
+        input_socket.tooltip = "Project name"
+        self.outputs.new("SvVerticesSocket", "file")
+
+    def draw_buttons(self, context, layout):
+        op = layout.operator("node.sv_ifc_tooltip", text="", icon="QUESTION", emboss=False).tooltip = "Quick Project Setup: creates Ifc file and sets up a basic project"
+        #op.tooltip = self.tooltip
+
+    def process(self):
+        self.sv_input_names = [i.name for i in self.inputs]
+        super().process()
+
+    def process_ifc(self, *setting_values):
+        settings = dict(zip(self.sv_input_names, setting_values))
+        settings = {k: v for k, v in settings.items() if v != ""}
+        file = template.create(
+                filename=settings['filename'],
+                timestring=settings['timestring'],
+                organization=settings['organization'],
+                creator=settings['creator'],
+                schema_identifier=settings['schema_identifier'],
+                application_version=settings['application_version'],
+                timestamp=settings['timestamp'],
+                application=settings['application'],
+                project_globalid=settings['project_globalid'],
+                project_name=settings['project_name'],
+            )
+
+        self.outputs["file"].sv_set([[file]])
+
+
+def register():
+    bpy.utils.register_class(SvIfcQuickProjectSetup)
+
+
+def unregister():
+    bpy.utils.unregister_class(SvIfcQuickProjectSetup)

src/ifcsverchok/nodes/ifc/sverchok_to_ifc.py

@@ -0,0 +1,197 @@
+# IfcSverchok - IFC Sverchok extension
+# Copyright (C) 2022 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of IfcSverchok.
+#
+# IfcSverchok is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcSverchok is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with IfcSverchok.  If not, see <http://www.gnu.org/licenses/>.
+ 
+from copy import deepcopy
+import bpy
+import ifcopenshell
+import ifcsverchok.helper
+import ifcopenshell.api
+from ifcsverchok.ifcstore import SvIfcStore
+import blenderbim.tool as tool
+import blenderbim.core.geometry as core
+from bpy.props import StringProperty, EnumProperty, IntProperty, FloatVectorProperty
+from sverchok.node_tree import SverchCustomTreeNode
+from sverchok.data_structure import updateNode
+ 
+ 
+class SvIfcSverchokToIfcRepr(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
+    """
+    Triggers: Sv to Ifc Repr
+    Tooltip: Sverchok geometry to Ifc Shape Representation
+    """
+    bl_idname = "SvIfcSverchokToIfcRepr"
+    bl_label = "IFC Sverchok to IFC Repr"
+    node_dict = {}
+ 
+    n_id: StringProperty()
+    context_types = [
+        ('Model', 'Model', 'Context type: Model', 0),
+        ('Plan', 'Plan', 'Context type: Plan', 1),
+    ]
+ 
+    context_identifiers = [
+        ('Body', 'Body', 'Context identifier: Body', 0),
+        ('Annotation', 'Annotation', 'Context identifier: Annotation', 1),
+        ('Box', 'Box', 'Context identifier: Box', 2),
+        ('Axis', 'Axis', 'Context identifier: Axis', 3),
+    ]
+    target_views = [
+        ('MODEL_VIEW', 'MODEL_VIEW', 'Target View: MODEL_VIEW', 0),
+        ('PLAN_VIEW', 'PLAN_VIEW', 'Target View: PLAN_VIEW', 1),
+        ('GRAPH_VIEW', 'GRAPH_VIEW', 'Target View: GRAPH_VIEW', 2),
+        ('SKETCH_VIEW', 'SKETCH_VIEW', 'Target View: SKETCH_VIEW', 3),
+    ]
+ 
+    context_type: EnumProperty(name="Context Type", description="Default: Model", default="Model",items=context_types,update=updateNode)
+    context_identifier: EnumProperty(name="Context Identifier", description="Default: Body", default="Body", items=context_identifiers, update=updateNode)
+    target_view: EnumProperty(name="Target View", description="Default: MODEL VIEW", default="MODEL_VIEW",items=target_views, update=updateNode)
+    
+    def sv_init(self, context):
+        self.inputs.new("SvStringsSocket", "context_type").prop_name = "context_type"
+        self.inputs.new("SvStringsSocket", "context_identifier").prop_name = "context_identifier"
+        self.inputs.new("SvStringsSocket", "target_view").prop_name = "target_view"
+        self.inputs.new("SvVerticesSocket", "Vertices")
+        self.inputs.new("SvStringsSocket", "Edges")
+        self.inputs.new("SvStringsSocket", "Faces")        
+        self.outputs.new("SvVerticesSocket", "Representation(s)")
+        self.width = 210
+        self.node_dict[hash(self)] = {}
+ 
+    def draw_buttons(self, context, layout):
+        op = layout.operator(
+            "node.sv_ifc_tooltip", text="", icon="QUESTION", emboss=False
+        ).tooltip = "Sverchok geometry to Ifc Shape Representation. \nTakes one or multiple geometries."
+ 
+    def process(self):
+        if not any(socket.is_linked for socket in self.inputs):
+            return
+
+        self.file = SvIfcStore.get_file()
+        self.sv_input_names = [i.name for i in self.inputs]
+ 
+        if hash(self) not in self.node_dict:
+            self.node_dict[hash(self)] = {} #happens if node is already on canvas when blender loads
+        if not self.node_dict[hash(self)]:
+            self.node_dict[hash(self)].update(dict.fromkeys(self.sv_input_names, 0))
+
+        edit = False
+        for i in range(len(self.inputs)):
+            input = self.inputs[i].sv_get(deepcopy=False)
+            if isinstance(self.node_dict[hash(self)][self.inputs[i].name], list) and input != self.node_dict[hash(self)][self.inputs[i].name]:
+                edit = True
+            self.node_dict[hash(self)][self.inputs[i].name] = input
+
+        self.vertices = self.inputs["Vertices"].sv_get(deepcopy=False)
+        self.edges = self.inputs["Edges"].sv_get(deepcopy=False)
+        self.faces = self.inputs["Faces"].sv_get(deepcopy=False)
+        geo_data = list(zip(self.vertices, self.edges, self.faces))
+
+        if self.node_id not in SvIfcStore.id_map:
+
+            representations = self.create(geo_data)
+        else:
+            if edit is True:
+                self.edit()
+                representations = self.create(geo_data)
+            else:
+                # representations = self.get_existing_element()
+                representations = SvIfcStore.id_map[self.node_id]["Representations"]
+
+        self.outputs["Representation(s)"].sv_set(representations)
+    
+    def create(self, geo_data):
+        representations_ids = []
+        self.context = self.get_context()
+        for item in geo_data:
+            representation = ifcopenshell.api.run(
+            "geometry.add_sverchok_representation",
+            self.file,
+            should_run_listeners=False,
+            context=self.context,
+            vertices=[item[0]],
+            edges=[item[1]],
+            faces=[item[2]],
+            )
+            if not representation:
+                raise Exception("Couldn't create representation. Possibly wrong context.")
+            representations_ids.append(representation.id())
+            SvIfcStore.id_map.setdefault(self.node_id, {}).setdefault("Representations", []).append(representation.id())
+        return representations_ids
+    
+    def edit(self):
+            # results = self.get_existing_element()
+        if "Representations" not in SvIfcStore.id_map[self.node_id]:
+            return
+        for step_id in SvIfcStore.id_map[self.node_id]["Representations"]:
+            ifcopenshell.api.run(
+                    "geometry.remove_representation", self.file, representation=self.file.by_id(step_id)
+                )
+        del SvIfcStore.id_map[self.node_id]["Representations"]
+        return
+ 
+    def get_context(self):
+        context = ifcopenshell.util.representation.get_context(
+            self.file, self.context_type, self.context_identifier, self.target_view
+        )
+        if not context:
+            parent = ifcopenshell.util.representation.get_context(self.file, self.context_type)
+            if not parent:
+                parent = ifcopenshell.api.run("context.add_context", self.file, context_type=self.context_type)
+            context = ifcopenshell.api.run(
+                "context.add_context",
+                self.file,
+                context_type=self.context_type,
+                context_identifier=self.context_identifier,
+                target_view=self.target_view,
+                parent=parent,
+            )
+            SvIfcStore.id_map.setdefault(self.node_id, {}).setdefault("Contexts", []).append(context.id())
+        return context
+ 
+    def sv_free(self):
+        try:
+            self.file = SvIfcStore.get_file()
+            if "Representations" in SvIfcStore.id_map[self.node_id]:
+                for step_id in SvIfcStore.id_map[self.node_id]["Representations"]:
+                    ifcopenshell.api.run("geometry.remove_representation", self.file, representation=self.file.by_id(step_id))
+
+            if "Contexts" in SvIfcStore.id_map[self.node_id]:
+                for context_id in SvIfcStore.id_map[self.node_id]["Contexts"]:
+                    context = self.file.by_id(context_id)
+                    if not self.file.get_inverse(context):
+                        if self.file.by_id(context_id).ParentContext:
+                            parent = self.file.by_id(context_id).ParentContext
+                        ifcopenshell.api.run("context.remove_context", self.file, context=context)
+                        if parent:
+                            if not self.file.get_inverse(parent):
+                                ifcopenshell.api.run("context.remove_context", self.file, context=parent)
+                        print("Removed context with step ID: ", context_id)
+                        SvIfcStore.id_map[self.node_id]["Contexts"].remove(context_id)
+            del SvIfcStore.id_map[self.node_id]
+            del self.node_dict[hash(self)]
+            print('Node was deleted')
+        except KeyError or AttributeError:
+            pass
+ 
+ 
+def register():
+    bpy.utils.register_class(SvIfcSverchokToIfcRepr)
+ 
+ 
+def unregister():
+    bpy.utils.unregister_class(SvIfcSverchokToIfcRepr)

src/ifcsverchok/nodes/ifc/write_file.py

@@ -17,30 +17,97 @@
 # You should have received a copy of the GNU General Public License
 # along with IfcSverchok.  If not, see <http://www.gnu.org/licenses/>.
 
+from os.path import abspath, splitext
 import bpy
 import ifcopenshell
 import ifcsverchok.helper
-from bpy.props import StringProperty
+from ifcsverchok.ifcstore import SvIfcStore
+from bpy.props import StringProperty, BoolProperty
 from sverchok.node_tree import SverchCustomTreeNode
-from sverchok.data_structure import updateNode
+from sverchok.data_structure import updateNode, flatten_data
 
 
 class SvIfcWriteFile(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
+    """
+    Triggers: Ifc write to file
+    Tooltip: Write active Sverchok Ifc file to path
+    """
+    def refresh_node_local(self, context):
+        if self.refresh_local:
+            self.process()
+            self.refresh_local = False
+
+    # out = ""
+    refresh_local: BoolProperty(name="Write", description="Write to file", update=refresh_node_local)
+
     bl_idname = "SvIfcWriteFile"
     bl_label = "IFC Write File"
-    file: StringProperty(name="file", update=updateNode)
-    path: StringProperty(name="path", update=updateNode)
+    path: StringProperty(name="path", description="File path to write to. Can be relative.",  update=updateNode)
 
     def sv_init(self, context):
-        self.inputs.new("SvStringsSocket", "file").prop_name = "file"
         self.inputs.new("SvStringsSocket", "path").prop_name = "path"
+        self.outputs.new("SvStringsSocket", "output")
+        
+    def draw_buttons(self, context, layout):
+        row = layout.row(align=True)
+        row.operator("node.sv_ifc_tooltip", text="", icon="QUESTION", emboss=False).tooltip = "Writes active Ifc file to path.\n It will overwrite an existing file.\n N.B.! It's recommended to create a fresh IFC File using the 're-run all nodes' button in IfcSverchok panel before saving."
+        row.prop(self, 'refresh_local', icon='FILE_REFRESH')
 
     def process(self):
-        self.sv_input_names = ["file", "path"]
-        super().process()
+        path = flatten_data(self.inputs["path"].sv_get(), target_level = 1)[0]
+        if not path:
+            return
+        path = abspath(path)
+        file = SvIfcStore.get_file()
+        _, ext = splitext(path)
+        if not ext:
+            raise Exception("Bad path. Provide a path to a file.")
+        if self.refresh_local and ext:
+            self.ensure_hirarchy(file)
+            file.write(path)
+        self.outputs["output"].sv_set(f"File written successfully to: {path}.")
+    
+    def ensure_hirarchy(self, file):
+        elements_in_buildings = []
+        if not 0 <= 0 < len(file.by_type("IfcBuilding")):
+            my_building = ifcopenshell.api.run("root.create_entity", file, ifc_class="IfcBuilding", name="My Building")
+            elements = ifcopenshell.util.element.get_decomposition(my_building)
+        else:
+            for building in file.by_type("IfcBuilding"):
+                elements = ifcopenshell.util.element.get_decomposition(building)
+                elements_in_buildings.extend(elements)
 
-    def process_ifc(self, file, path):
-        file.write(path)
+        for spatial in (file.by_type("IfcSpatialElement") or file.by_type("IfcSpatialStructureElement")):
+            if (not (spatial.is_a("IfcSite") or spatial.is_a("IfcBuilding")) and (spatial not in elements_in_buildings)):
+                elements = ifcopenshell.util.element.get_decomposition(spatial)
+                ifcopenshell.api.run("aggregate.assign_object", file, product=spatial, relating_object=file.by_type("IfcBuilding")[0])
+
+        elements_in_buildings_after = []
+        for building in file.by_type("IfcBuilding"):
+            elements = ifcopenshell.util.element.get_decomposition(building)
+            elements_in_buildings_after.extend(elements)
+
+        elements = file.by_type("IfcElement")
+        for element in elements:
+            if element not in elements_in_buildings:
+                ifcopenshell.api.run("spatial.assign_container", file, product=element, relating_structure=file.by_type("IfcBuilding")[0])
+
+
+        for building in file.by_type("IfcBuilding"):
+            elements = ifcopenshell.util.element.get_decomposition(building)
+            if not building.Decomposes:
+                if not 0 <= 0 < len(file.by_type("IfcSite")):
+                    ifcopenshell.api.run("root.create_entity", file, ifc_class="IfcSite", name="My Site")
+                ifcopenshell.api.run("aggregate.assign_object", file, product=building, relating_object=file.by_type("IfcSite")[0])
+                try:
+                    if file.by_type("IfcSite")[0].Decomposes[0].RelatingObject.is_a("IfcProject"):
+                        continue
+                except IndexError:
+                    pass
+                ifcopenshell.api.run("aggregate.assign_object", file, product=file.by_type("IfcSite")[0], relating_object=file.by_type("IfcProject")[0])
+        self.file = file
+        return
+        
 
 
 def register():