Add IFC remove node

src/ifcsverchok/__init__.py

@@ -32,6 +32,7 @@ def nodes_index():
         ("ifc.by_type", "SvIfcByType"),
         ("ifc.by_query", "SvIfcByQuery"),
         ("ifc.add", "SvIfcAdd"),
+        ("ifc.remove", "SvIfcRemove"),
         ("ifc.select_blender_objects", "SvIfcSelectBlenderObjects"),
     ])]
 

src/ifcsverchok/nodes/ifc/remove.py

@@ -0,0 +1,37 @@
+import bpy
+import ifcopenshell
+import ifcsverchok.helper
+from bpy.props import StringProperty
+from sverchok.node_tree import SverchCustomTreeNode
+from sverchok.data_structure import updateNode
+
+
+class SvIfcRemove(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
+    bl_idname = 'SvIfcRemove'
+    bl_label = 'IFC Remove'
+    file: StringProperty(name='file', update=updateNode)
+    entity: StringProperty(name='entity', update=updateNode)
+
+    def sv_init(self, context):
+        self.inputs.new('SvStringsSocket', 'file').prop_name = 'file'
+        self.inputs.new('SvStringsSocket', 'entity').prop_name = 'entity'
+        self.outputs.new('SvStringsSocket', 'file')
+
+    def process(self):
+        file = self.inputs['file'].sv_get()[0][0]
+        self.new_file = ifcopenshell.file.from_string(file.wrapped_data.to_string())
+        self.remove_entity(self.inputs['entity'].sv_get())
+        self.outputs['file'].sv_set([[self.new_file]])
+
+    def remove_entity(self, entity):
+        if isinstance(entity, (tuple, list)):
+            for e in entity:
+                self.remove_entity(e)
+        else:
+            self.new_file.remove(self.new_file.by_id(entity.id()))
+
+def register():
+    bpy.utils.register_class(SvIfcRemove)
+
+def unregister():
+    bpy.utils.unregister_class(SvIfcRemove)