FEAT: Rescale property in model units (#5542)

src/ansys/aedt/core/modeler/cad/primitives.py

@@ -261,6 +261,7 @@ def __init__(self, app, is3d=True):
         self._unclassified = []
         self._all_object_names = []
         self._model_units = None
+        self.rescale_model = False
         self._object_names_to_ids = {}
         self.objects = Objects(self, "o")
         self.user_defined_components = Objects(self, "u")
@@ -423,11 +424,23 @@ def materials(self):
     def model_units(self):
         """Model units as a string. For example, ``"mm"``.
 
+        This property allows you to get or set the model units. When setting the model units,
+        you can specify whether to rescale the model by adjusting the ``rescale_model`` attribute.
+
         References
         ----------
 
         >>> oEditor.GetModelUnits
         >>> oEditor.SetModelUnits
+
+        Examples
+        --------
+
+        >>> from ansys.aedt.core import hfss
+        >>> hfss = Hfss()
+        >>> hfss.modeler.model_units = "cm"
+        >>> hfss.modeler.rescale_model = True
+        >>> hfss.modeler.model_units = "mm"
         """
         if not self._model_units:
             self._model_units = self.oeditor.GetModelUnits()
@@ -436,7 +449,7 @@ def model_units(self):
     @model_units.setter
     def model_units(self, units):
         assert units in AEDT_UNITS["Length"], f"Invalid units string {units}."
-        self.oeditor.SetModelUnits(["NAME:Units Parameter", "Units:=", units, "Rescale:=", False])
+        self.oeditor.SetModelUnits(["NAME:Units Parameter", "Units:=", units, "Rescale:=", self.rescale_model])
         self._model_units = units
 
     @property

tests/system/general/test_07_Object3D.py

@@ -768,3 +768,11 @@ def test_20_simplify_objects(self):
         )
         assert not self.aedtapp.modeler.simplify_objects(assignment=None)
         assert not self.aedtapp.modeler.simplify_objects(assignment=1)
+
+    def test_30_rescale(self):
+        self.aedtapp.modeler.model_units = "meter"
+        box1 = self.aedtapp.modeler.create_box([0, 0, 0], [5, 10, 2], material="Copper")
+        assert box1.mass == 893300.0
+        self.aedtapp.modeler.rescale_model = True
+        self.aedtapp.modeler.model_units = "mm"
+        assert round(box1.mass, 5) == 0.00089