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"""
Dependency graph: Original object example
+++++++++++++++++++++++++++++++++++++++++
This example demonstrates access to the original ID.
Such access is needed to check whether object is selected, or to compare pointers.
"""
import bpy
class OBJECT_OT_original_example(bpy.types.Operator):
"""Access original object and do something with it"""
bl_label = "DEG Access Original Object"
bl_idname = "object.original_example"
def check_object_selected(self, object_eval):
# Selection depends on a context and is only valid for original objects. This means we need
# to request the original object from the known evaluated one.
#
# NOTE: All ID types have an `original` field.
object = object_eval.original
return object.select_get()
def execute(self, context):
# NOTE: It seems redundant to iterate over original objects to request evaluated ones
# just to get original back. But we want to keep example as short as possible, but in real
# world there are cases when evaluated object is coming from a more meaningful source.
depsgraph = context.evaluated_depsgraph_get()
for object in context.editable_objects:
object_eval = object.evaluated_get(depsgraph)
if self.check_object_selected(object_eval):
self.report({'INFO'}, f"Object is selected: {object_eval.name}")
return {'FINISHED'}
def register():
bpy.utils.register_class(OBJECT_OT_original_example)
def unregister():
bpy.utils.unregister_class(OBJECT_OT_original_example)
if __name__ == "__main__":
register()
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