9

Link Constraint 403
5.
To edit the weight values, select the box.
6. Open the Motion panel and view the Position
Constraint rollout.
7. Click the Cylinder’s name in list of targets.
8. Using the Weight spinner, change the value
from 50 to 20.
As the va lue decreases, the box moves closer
to the sphere.
9. In the Top viewport. select the cylinder and
move it around.
10. In the Top viewport, select the sphere and m ove
it around.
Thespherehasmoreinfluenceoverthebox’s
movement than the c ylinder.
Inter face
OnceyouassignaPositionconstraint,youcan
accessitspropertiesonthePositionConstraint
rollout in the Motion panel. In this rollout you
can add or delete targets, assign weig hting, and
animate each t arget’s weight value.
Note: When you a ssign a Position constraint via the
Animationmenu,thesoftwareassignsaPosition
List controller to your object. In the Position List
rollout list you will find Position Constraint. This
is the actual Position Constraint controller. To
view the Position Constraint rollout, double-click
Position Constraint in the list.
Add position target—Adds new target objects that
influence the position constrained object.
Delete posit ion target—Removes targets. Once a
target is removed, it will no longer influence the
constrained object.
Weigh t—Assigns and animates weight values for
each target.
K eep Initial O ffset—Use Keep Initial Offset
to preserve the original distance between the
constrained object and the target object. This
prevents the constrained object from snapping to
thetargetobject’spivot.ThedefaultisOff.
Link Constra int
Animation menu > Constraints > Link Constraint
A link constraint enables th e rob ot arm s to pass a ball.
A Lin k constraint is used to animate an object
linking from one target object to another.
The Link constraint causes an object to in herit the
position, rota tion, and scale of its target object.