2009

The constraint is simulated when it has the correct number of rigid bodies
attached and is included in a valid
Constraint Solver on page 3945. When not
selected, an invalid Point-Point constraint is red in the viewport.
Procedures
To create a Point-Point constraint:
■ Choose one of the above options, and then click in any viewport to add
the Point-Point constraint.
NOTE The icon’s position has no effect on the constraint’s behavior.
To attach objects to the Point-Point constraint:
1 Create the constraint and the objects to connect with it.
2 On the constraint’s Properties rollout, click the Child pick button, and
then select the object to use as the child object in one of the viewports.
By default, this attaches the constraint to the body at the body’s pivot
point.
3 If you do not want to assign a second body to the constraint, turn off
the Parent check box if necessary.
4 If the constraint is to be two-bodied, make sure Parent is on and then
use the Parent pick button to set the parent for the constraint. By default,
the attachment point for the parent is also aligned with the child body's
pivot point, which means that the bodies will maintain their current
positions relative to each other in the simulation.
To create the constraint and attach objects in a single step:
■ See the
Scripts on page 4103 topic.
To change the attachment positions for the bodies:
1 With the constraint selected, open the Modify panel.
2 In the modifier stack open the constraint’s sub-object list.
3 Access the sub-object level corresponding to the object in whose space
you want to move the attachment point: Parent Space or Child Space. If
the constraint is single-bodied, Parent Space allows you to move the world
attachment position.
3976 | Chapter 16 reactor