Py io_utils: deprecate orientation_helper_factory and add new orientation_helper decorator.

This fixes warning about not using annotations, and a decorator here is
a much cleaner solution anyway.

release/scripts/modules/bpy_extras/io_utils.py

@@ -21,6 +21,7 @@
 __all__ = (
     "ExportHelper",
     "ImportHelper",
+    "orientation_helper",
     "orientation_helper_factory",
     "axis_conversion",
     "axis_conversion_ensure",
@@ -121,7 +122,53 @@ class ImportHelper:
         return _check_axis_conversion(self)
 
 
+def orientation_helper(axis_forward='Y', axis_up='Z'):
+    def wrapper(cls):
+        def _update_axis_forward(self, context):
+            if self.axis_forward[-1] == self.axis_up[-1]:
+                self.axis_up = (self.axis_up[0:-1] +
+                                'XYZ'[('XYZ'.index(self.axis_up[-1]) + 1) % 3])
+
+        cls.__annotations__['axis_forward'] = EnumProperty(
+            name="Forward",
+            items=(
+                ('X', "X Forward", ""),
+                ('Y', "Y Forward", ""),
+                ('Z', "Z Forward", ""),
+                ('-X', "-X Forward", ""),
+                ('-Y', "-Y Forward", ""),
+                ('-Z', "-Z Forward", ""),
+            ),
+            default=axis_forward,
+            update=_update_axis_forward,
+        )
+
+        def _update_axis_up(self, context):
+            if self.axis_up[-1] == self.axis_forward[-1]:
+                self.axis_forward = (self.axis_forward[0:-1] +
+                                     'XYZ'[('XYZ'.index(self.axis_forward[-1]) + 1) % 3])
+
+        cls.__annotations__['axis_up'] = EnumProperty(
+            name="Up",
+            items=(
+                ('X', "X Up", ""),
+                ('Y', "Y Up", ""),
+                ('Z', "Z Up", ""),
+                ('-X', "-X Up", ""),
+                ('-Y', "-Y Up", ""),
+                ('-Z', "-Z Up", ""),
+            ),
+            default=axis_up,
+            update=_update_axis_up,
+        )
+
+        return cls
+
+    return wrapper
+
+
 def orientation_helper_factory(name, axis_forward='Y', axis_up='Z'):
+    print("WARNING! Using this helper function is deprecated, please switch to orientation_helper decorator instead.")
     members = {}
 
     def _update_axis_forward(self, context):