user: Describe GeometryNodeCaptureAttribute(GeometryNode) from the Blender manual or Python API, including usage steps and snippets.

assistant: # GeometryNodeCaptureAttribute(GeometryNode)

base classes — [`bpy_struct`](bpy.types.bpy_struct.html#bpy.types.bpy_struct "bpy.types.bpy_struct"), [`Node`](bpy.types.Node.html#bpy.types.Node "bpy.types.Node"), [`NodeInternal`](bpy.types.NodeInternal.html#bpy.types.NodeInternal "bpy.types.NodeInternal"), [`GeometryNode`](bpy.types.GeometryNode.html#bpy.types.GeometryNode "bpy.types.GeometryNode")

*class* bpy.types.GeometryNodeCaptureAttribute(*GeometryNode*)
:   Store the result of a field on a geometry and output the data as a node socket. Allows remembering or interpolating data as the geometry changes, such as positions before deformation

    active_index
    :   Index of the active item

        Type:
        :   int in [0, inf], default 0

    active_item
    :   Index of the active item

        Type:
        :   [`RepeatItem`](bpy.types.RepeatItem.html#bpy.types.RepeatItem "bpy.types.RepeatItem")

    capture_items
    :   Type:
        :   [`NodeGeometryCaptureAttributeItems`](bpy.types.NodeGeometryCaptureAttributeItems.html#bpy.types.NodeGeometryCaptureAttributeItems "bpy.types.NodeGeometryCaptureAttributeItems") [`bpy_prop_collection`](bpy.types.bpy_prop_collection.html#bpy.types.bpy_prop_collection "bpy.types.bpy_prop_collection") of [`NodeGeometryCaptureAttributeItem`](bpy.types.NodeGeometryCaptureAttributeItem.html#bpy.types.NodeGeometryCaptureAttributeItem "bpy.types.NodeGeometryCaptureAttributeItem"), (readonly)

    domain
    :   Which domain to store the data in

        Type:
        :   enum in [Attribute Domain Items](bpy_types_enum_items/attribute_domain_items.html#rna-enum-attribute-domain-items), default `'POINT'`

    *classmethod* is_registered_node_type()
    :   True if a registered node type

        Returns:
        :   Result

        Return type:
        :   boolean

    *classmethod* input_template(*index*)
    :   Input socket template

        Parameters:
        :   **index** (*int in* *[**0**,* *inf**]*) – Index

        Returns:
        :   result

        Return type:
        :   [`NodeInternalSocketTemplate`](bpy.types.NodeInternalSocketTemplate.html#bpy.types.NodeInternalSocketTemplate "bpy.types.NodeInternalSocketTemplate")

    *classmethod* output_template(*index*)
    :   Output socket template

        Parameters:
        :   **index** (*int in* *[**0**,* *inf**]*) – Index

        Returns:
        :   result

        Return type:
        :   [`NodeInternalSocketTemplate`](bpy.types.NodeInternalSocketTemplate.html#bpy.types.NodeInternalSocketTemplate "bpy.types.NodeInternalSocketTemplate")

    *classmethod* bl_rna_get_subclass(*id*, *default=None*, */*)
    :   Parameters:
        :   **id** (*str*) – The RNA type identifier.

        Returns:
        :   The RNA type or default when not found.

        Return type:
        :   [`bpy.types.Struct`](bpy.types.Struct.html#bpy.types.Struct "bpy.types.Struct") subclass

    *classmethod* bl_rna_get_subclass_py(*id*, *default=None*, */*)
    :   Parameters:
        :   **id** (*str*) – The RNA type identifier.

        Returns:
        :   The class or default when not found.

        Return type:
        :   type