Displaying the relative depth of 2D image objects while preserving the
visual attributes of the objects is disclosed. After an object group is
determined, the members of the object group are temporarily moved away
from a center location while preserving the object group members'
positions relative to each other in the X-Y plane. A depth well is
displayed at the center location and each object group member is
connected to a ring-beam in the depth well. In response to a control
action indicating a relative depth adjustment of an object group member
relative to the remaining object group members, the depth of the object
relative to the remaining object group members is changed. In response to
a control action indicating the depth adjustment is complete, object
group members are returned to their original positions in the X-Y plane
with the adjusted object displayed at the object's new relative depth.
Dragging object group member into the upper or lower part of another
group member are control actions indicating a relative depth adjustment
of an object group member.