Autodesk 62205-051408-9001 User Guide - Page 304

Creating Keyframes, Editing Keyframes and Animation Curves

Page 304 highlights

12 Creating Animations Creating Keyframes When the Animate button is enabled, Combustion automatically creates keyframes when you make changes to animation channels. An interpolation method is used to calculate the rotation of inbetween frames and create continuous motion. Keyframes can be independently created and edited for multiple channels. For example, you can have a layer travel along a complex motion path and spin all around the screen, incorporating numerous keyframes, while the opacity of the layer smoothly fades away to 0% using just two keyframes. You can disable automatic keyframing for selected channels, if necessary. If you want to start the animation at another frame than the first frame and if you do not want a keyframe to be added automatically at the first frame, check the Combustion Preferences by choosing File | Preferences (CTRL+;), click the Animation category under Host, and make sure Automatically Add First Key Frame is not selected. To create a keyframe: 1. Go to the frame where you want to create a keyframe. 2. Make sure the Animate button is enabled. 3. Select the layer for which you want to create a keyframe. 4. Set the keyframe value using one of the following methods: • Modify the layer in the active viewport. Keyframes are automatically created for all channels that change. • In the Composite Controls panel, click the Transform button then use the sliders to adjust the values for the channels you want to animate. Keyframes are added automatically for all channels that change. • In the Timeline list, double-click the channel you want to keyframe, and type a numeric value in the field that appears. You can also click and drag a value in the Timeline list to increase or decrease it. Note: Transforming a layer in a viewport sets keyframes for X, Y and Z channels, even if some of the values remain the same. Adjusting values in the Composite Control panel or the Timeline list only sets keyframes on the specific channel being modified. To add a keyframe without adjusting the channel value: In the Timeline list, select the channel that you want to keyframe, and click the Add Key button in the Timeline controls, or press SHIFT+A. Note: You can also click anywhere on a channel curve to add a keyframe at that point. A keyframe is created at the current time for the selected channel. This procedure is useful when you want to create a keyframe without editing a channel value. Editing Keyframes and Animation Curves Once you create keyframes, there are a number of ways to edit them: • Edit keyframes with the context menus. • Edit keyframes directly in the active viewport. • Drag the keyframe to change its value in Graph mode. • Double-click the keyframe you want to change, then enter a new value in the Numerical Input dialog that appears. • Move a keyframe in time in either Graph or Overview mode. 288

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Creating Animations
12
288
Creating Keyframes
When the Animate button is enabled,
Combustion
automatically creates keyframes when you make
changes to animation channels. An interpolation
method is used to calculate the rotation of in-
between frames and create continuous motion.
Keyframes can be independently created and edited
for multiple channels. For example, you can have a
layer travel along a complex motion path and spin all
around the screen, incorporating numerous
keyframes, while the opacity of the layer smoothly
fades away to 0% using just two keyframes.
You can disable automatic keyframing for selected
channels, if necessary.
If you want to start the animation at another frame
than the first frame and if you do not want a
keyframe to be added automatically at the first
frame, check the
Combustion
Preferences by
choosing File | Preferences (
C
TRL
+;
), click the
Animation category under Host, and make sure
Automatically Add First Key Frame is not selected.
To create a keyframe:
1.
Go to the frame where you want to create a
keyframe.
2.
Make sure the Animate button is enabled.
3.
Select the layer for which you want to create a
keyframe.
4.
Set the keyframe value using one of the following
methods:
Modify the layer in the active viewport.
Keyframes are automatically created for all
channels that change.
In the Composite Controls panel, click the
Transform button then use the sliders to adjust
the values for the channels you want to animate.
Keyframes are added automatically for all
channels that change.
In the Timeline list, double-click the channel you
want to keyframe, and type a numeric value in
the field that appears. You can also click and drag
a value in the Timeline list to increase or
decrease it.
Note:
Transforming a layer in a viewport sets
keyframes for X, Y and Z channels, even if some of
the values remain the same. Adjusting values in the
Composite Control panel or the Timeline list only
sets keyframes on the specific channel being
modified.
To add a keyframe without adjusting the channel
value:
In the Timeline list, select the channel that you want
to keyframe, and click the Add Key button in the
Timeline controls, or press
S
HIFT
+A
.
Note:
You can also click anywhere on a channel
curve to add a keyframe at that point.
A keyframe is created at the current time for the
selected channel. This procedure is useful when
you want to create a keyframe without editing a
channel value.
Editing Keyframes and Animation
Curves
Once you create keyframes, there are a number of
ways to edit them:
Edit keyframes with the context menus.
Edit keyframes directly in the active viewport.
Drag the keyframe to change its value in Graph
mode.
Double-click the keyframe you want to change,
then enter a new value in the Numerical Input
dialog that appears.
Move a keyframe in time in either Graph or
Overview mode.