User Manual

Types of Control Points
The control points along an XY path in the viewer are locked to the control points on the X and
Y curve in the Spline Editor. The number of points are identical, and adding a control point in
one place adds it to the other. That is not the case with a Polyline path. Polyline paths are
composed of locked and unlocked points. Whether a point is locked is determined by how it
was added to the Polyline. Locked points on the motion path in the viewer will have an
associated point on the Displacement spline in the Spline Editor; unlocked points will not have
corresponding points. Each has a distinct behavior, as described below.
Locked Points
Locked points are the motion path equivalents of keyframes. They are created by changing the
playhead position and moving the animated control. These points indicate that the animated
control must be in the specified position at the specified frame.
The locked points are displayed as larger-sized hollow squares in the viewer. Each locked key
has an associated point on the path’s Displacement curve in the Spline Editor.
Locked points on a path in the viewer.
Deleting a locked point from the motion path will change the overall timing of the motion.
To change the duration of a path using locked points:
1 Connect an object to a Transform node.
2 Position the where you want to start the motion path.
A graphic placed on the ride side of the frame.
3 Set the playhead at frame 0.
Chapter – 62 Animating with Motion Paths 1255