feat: add units classes (#69)

Co-authored-by: rrdls <renato.lima@ctec.ufal.br>

Author: rrdls

packages/fragments/src/Importers/IfcImporter/index.ts

@@ -52,6 +52,7 @@ export class IfcImporter {
   classes = {
     elements: new DataSet<number>([...ifcClasses.elements]),
     abstract: new DataSet<number>([
+      ...ifcClasses.units,
       ...ifcClasses.base,
       ...ifcClasses.materials,
       ...ifcClasses.properties,

packages/fragments/src/Importers/IfcImporter/src/classes.ts

@@ -1,6 +1,13 @@
 import * as WEBIFC from "web-ifc";
 
 export const ifcClasses = {
+  units: new Set([
+    WEBIFC.IFCUNITASSIGNMENT,
+    WEBIFC.IFCSIUNIT,
+    WEBIFC.IFCNAMEDUNIT,
+    WEBIFC.IFCDERIVEDUNIT,
+    WEBIFC.IFCMONETARYUNIT,
+  ]),
   base: new Set([
     WEBIFC.IFCPROJECT,
     WEBIFC.IFCSITE,