2009

1. Parent Body
2. Child Body
The illustration shows three axes of importance: the Twist Axis, the Plane Axis
and the Twist X Plane Axis. The twist axis is probably the easiest to visualize
and you can do so by simply stretching out your arm and rotating it so that
your thumb changes from pointing upwards to downwards. Your movement
is just a series of rotations along the twist axis of the shoulder and elbow. In
general, the twist axis should follow the length of the child body in a joint.
In reactor you can specify the extent to either side of the neutral position the
constraint can twist; this need not be symmetrical.
A. Twist Axis (outward)
B. Plane Axis
C. Twist X Plane Axis
1. Twist Min.
2. Twist Max.
3. Twist Range
3960 | Chapter 16 reactor