2009

Table Of Contents
The backwards and forwards motion that previously occurred is corrected.
The aircraft travels slowly towards the first bend in the path curve, then
accelerates and travels at a constant speed around the curve until it nears
the end of the path where it decelerates and then slowly moves towards
the end of the curve.
Rotating an object along a motion path
As the aircraft travels along the motion path, its orientation remains the same
throughout the animation. A real aircraft rolls to one side (banks) as it flies
in an arc. To make the aircraft roll to one side as it travels along the path you
set keyframes for the Twist attributes in the Channel Box.
To animate the roll of the aircraft along the path
1 Ensure the aircraft is selected.
2 Set the Time Slider to frame 120.
The aircraft is repositioned along the curve near the first bend.
3 In the Inputs section of the Channel Box, click on motionPath1 to view
its attributes.
4 Ensure the Front Twist value for motionPath1 is set to 0.
5 In the Channel Box, select the FrontTwist channel by clicking on its
name.
6 Right-click on the selected name.
A drop-down list appears.
7 From the drop-down list, choose Key Selected.
8 To set the remaining keyframes for the rotation of the aircraft, use the
table below as a guide, keeping in mind that you set the keyframes in the
following order:
Set the frame in the Timeslider
216 | Chapter 6 Animation