2009

Table Of Contents
By default, the parameterization of a path curve is set between zero and one.
At frame 60, the aircraft is at the beginning of the curve where the
parameterization value is zero. When the aircraft is at the end of the curve
(frame 240) the parameterization value for the curve is one. When the aircraft
is halfway through the path animation (frame 150), it is located along the
curve at a UValue of 0.5.
By setting the frame number and UValue and then setting a key, you change
the timing for the aircrafts motion along the path.
To change the timing for the aircraft along the path
1 Ensure the aircraft is selected so its attributes display in the Channel Box.
2 In the Time Slider, drag the current time indicator to frame 120 using
the middle mouse button.
Middle-dragging the current time indicator, instead of using the left
mouse button, changes the current time without repositioning the aircraft
along the path.
3 In the Channel Box, set the UValue for MotionPath1 to 0.1.
The aircraft is repositioned along the curve near the first bend. When
you set the UValue to 0.1, the aircraft is positioned at a point that is a
distance of 10 percent from the beginning of the curve (that is, the aircraft
has completed 10 percent of the distance along the path).
4 In the Channel Box, select the UValue channel by clicking on its name
so it becomes highlighted.
Changing the timing of an object along a motion path | 211