The hierarchy
addition
to Swift
3D v3 proved
to be a
powerful
feature
that helped
users construct
3D animations
where parent-child
relationships
were pivotal.
Swift 3D v4 builds on this feature
by allowing
you to
introduce
cameras
and lights
to the
hierarchy scheme. The most
noteworthy
use of
this hierarchy
enhancement
is the
ability
to make
cameras trail animated objects effortlessly.
