New IFC get property node

src/ifcsverchok/__init__.py

@@ -35,6 +35,7 @@ def nodes_index():
         ("ifc.add", "SvIfcAdd"),
         ("ifc.remove", "SvIfcRemove"),
         ("ifc.generate_guid", "SvIfcGenerateGuid"),
+        ("ifc.get_property", "SvIfcGetProperty"),
         ("ifc.select_blender_objects", "SvIfcSelectBlenderObjects"),
     ])]
 

src/ifcsverchok/nodes/ifc/get_property.py

@@ -0,0 +1,40 @@
+import bpy
+import ifcopenshell
+import ifcopenshell.util.element
+import ifcsverchok.helper
+from bpy.props import StringProperty
+from sverchok.node_tree import SverchCustomTreeNode
+from sverchok.data_structure import updateNode
+
+
+class SvIfcGetProperty(bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore):
+    bl_idname = 'SvIfcGetProperty'
+    bl_label = 'IFC Get Property'
+    entity: StringProperty(name='entity', update=updateNode)
+    pset_name: StringProperty(name='pset_name', update=updateNode)
+    prop_name: StringProperty(name='prop_name', update=updateNode)
+
+    def sv_init(self, context):
+        self.inputs.new('SvStringsSocket', 'entity').prop_name = 'entity'
+        self.inputs.new('SvStringsSocket', 'pset_name').prop_name = 'pset_name'
+        self.inputs.new('SvStringsSocket', 'prop_name').prop_name = 'prop_name'
+        self.outputs.new('SvStringsSocket', 'value')
+
+    def process(self):
+        self.sv_input_names = ['entity', 'pset_name', 'prop_name']
+        self.value_out = []
+        super().process()
+        self.outputs['value'].sv_set(self.value_out)
+
+    def process_ifc(self, entity, pset_name, prop_name):
+        try:
+            self.value_out.append(ifcopenshell.util.element.get_psets(entity)[pset_name][prop_name])
+        except:
+            pass
+
+
+def register():
+    bpy.utils.register_class(SvIfcGetProperty)
+
+def unregister():
+    bpy.utils.unregister_class(SvIfcGetProperty)