Set here the translation vector applied to each light or
list of lights linked to a layer. Directional lights have
no position, so
Shift does not affect them.
When linking a light to another layer, the translation
is always applied to the light itself. Directional lights
have no position, so
Shift does not affect them.
The final light position is given by this translation vector added
to the current light position, as defined by the
Reference option.
By default this is the light position and the translation vector is
0.0,
0.0,
0.0, so no translation is applied.
When a list of lights is linked,
Reference is set by default
to
Child, so lights preserve their positions and are not superposed.