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Table Of Contents
1094 • CHAPTER 22
XPRESSO EDITOR • 1095
Use Start Position
To reference an element relative to the object that owns the XPresso tag, use either this mode or the
more advanced Relative Reference mode. For example, to reference the element that is three positions
before the object that owns the tag, set Reference Mode to Use Start Position, set Start Position to
Predecessor On This Level and set Start Distance to 3. The Use Start Position mode also enables you
to reference the rst or last object in the scene.
Absolute Reference
This is the default mode. The node references the object that is shown in the Reference box. If you
want to use the expression in several places in your scene, avoid using the Absolute Reference mode,
otherwise you’ll need to change the referencing of the objects each time.
Relative Reference
This mode is similar to Use Start Position. It enables you to reference an element relative to the object
that owns the XPresso tag. Unlike the Use Start Position mode, you enter a path that gives the node
instructions on how to reach the element. The starting position is the object that owns the tag. For
example, the path ‘UPPDN’ stands for ‘Up, Previous, Previous, Down, Next’, where Previous and
Next represent a jump to the previous or next element on the same hierarchical level. Up and Down
represent jumps one level up or one level down the hierarchy. The advantage of a relative reference
is that it enables you to transfer the Object node from one hierarchy to another without problems.
Edit the path using the Path box.
Start Position
This denes the Start Position when Reference Mode is set to Use Start Position. The setting is relative
to the object that owns the XPresso tag. For example, if you set Start Position to First In This Level, the
node references the rst element on the same hierarchical level as the object that owns the tag.
This Object: The object to which the XPresso tag is assigned.
Up In Hierarchy: Chooses the rst object one level up the hierarchy.
Down In Hierarchy: Jumps to the rst object one level down the hierarchy.
Successor On This Level: Chooses the next object on the same hierarchical
level.
Predecessor On This Level: Jumps to the previous object on the same
hierarchical level.
First On This Level: Chooses the rst element on the same hierarchical
level.