Origin

Specifies whether the blend shape is relative to the base object shape’s position, rotation, and scale, or is directly specified by you.

World

Blends the base object shape to the target object shape(s), taking into account any differences in position, rotation, and scale between the target object shape(s).

NoteThe local and world selections are identical to the Origin creation option’s selections. For more information, see Create Deformers > Blend Shape. However, the User attribute is not one of the Origin creation option’s selections.

Local

Blends the base object shape to the target object shape(s) while ignoring differences in position, rotation, and scale between the target shape(s).

User

Specifies that two special attributes, baseOrigin and targetOrigin, provide origin information. For more information on these attributes, see the online Node and Attribute Reference and the MEL Command reference. You can use the setAttr MEL command to set the values of the baseOrigin and targetOrigin attributes.