Aligning Objects to the Path
Normally, the orientation of an object remains fixed relative to world space as it moves from point to point. Using the Aligning option, you can have the object's orientation remain parallel to the path so that it reorients itself as it moves from point to point.
You can use this option to create more realistic motion for objects that have a distinct front and back.
The motion of this rocket on the looks rather unrealistic since it's rising and falling without pitching.

If you align the rocket to its path, the rocket's nose tilts down as it moves down and up as it moves up.

There are two align options available:
To align an object to a motion path:
button that appears next to its bounding box. The Object Attributes dialog appears.
Please note that if the motion path has tight curves, using the Align option may cause the object to flip as it goes around the curve. To avoid this, widen the curves on the path by moving points and/or adjusting the tangents.
Copyright © 2005-2007, DAZ Productions