9

Hinge Constraint 749
the parent b ody. The Hinge axes are defined in the
parent body’s space, which means that if you alter
the position or rotation of the parent, the space
movesaswellandmaintainsitsoffsetrotationand
translation with respect to the parent. When you
assign a parent body to the Hinge, Parent Space
is also aligned w ith the child body’s local space,
with the Hinge axis going through the child body’s
pivot point. If the Hinge is single-bodied, then
Parent Space represents the world orientation and
position of the Hinge.
Child Space—At this sub-object level, you can
move and rotate the representation of the Hinge
for the child b ody. The Hinge axes are defined
in the child body’s space, which means that if
you alter the position or rotation of the child,
thespacemovesaswellandmaintainsitsoffset
rotation and translation with respect to the child.
When you assign a child body to the Hinge, the
ChildSpacehingeaxisispositionedsothatitgoes
through the child body pivot point, and t he axes
arealignedwiththechildbody’slocalspace:The
Hingeaxisisalignedwiththechild’sZaxis,and
the perpendicular axis used for rotation limits is
aligned to the child’s X axis.
Propertie s rollout
Paren t—When on, the Hinge has two bodies and
you can designate an object to be the parent body.
When off, the Hinge is single-bodied and the point
occupied by the Parent Space sub-object is the
parent.
Youassigntheparentobjectbyclickingthisbutton
andthenselectingarigidbodyfromanyviewport.