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a world rotation. In a simulation, the dashpot tries to maintain a common
rotation for these axes.
You do not need to add angular dashpots explicitly to a simulation, as all valid
dashpots in a scene are added to the simulation by default. A dashpot is valid
if it has the correct number of rigid bodies attached and is enabled. When not
selected, invalid dashpots are colored red in the viewport.
Procedures
To create an Angular Dashpot:
■ Choose one of the above options, and then click in any viewport to add
the dashpot.
NOTE The icon’s position has no effect on the constraint’s behavior.
To attach objects to the Angular Dashpot:
1 Create the dashpot and the objects to connect using it.
2 In the dashpot’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 aligns the Angular Dashpot's target orientation with the child
body's local space.
3 If you do not want to assign a second body to the dashpot, turn off the
Parent check box if necessary.
4 If the dashpot is two-bodied, repeat Step 2, using the Parent pick button
to set Parent for the angular dashpot.
To create the constraint and attach objects in a single step:
■ See the
Scripts on page 4103 topic.
To change the offset rotations for the bodies:
1 With the Angular Dashpot selected, open the Modify panel.
2 In the modifier stack, open the dashpot’s sub-object list.
3 Highlight the sub-object that corresponds to the offset rotation you want
to change: Child Space or Parent Space. If the dashpot is single-bodied,
Parent Space represents the world rotation that the dashpot works to
align the Child Space with.
3940 | Chapter 16 reactor