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1 Maya Tutorial Basics of Animation 2/3 on Fri Sep 24, 2010 1:50 am

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Keyframe Animation
Keyframe animation is the standard animation method. In this method, you set keys for an object's extreme positions and let the computer fill in the in-between motion. A key is an anchor point for a particular attribute at a designated time. When the animation reaches that specified time, the object's attribute will be at the value you set. As you set keys, you specify the time at which those changes in the attribute's value take place.
To set keys with the auto keyframe method, you click the Auto Keyframe button in the Range Slider (it turns red to indicate that it's enabled). With auto keyframing, you can animate quickly by simply dragging the Time Slider to a given frame and then changing an attribute.

Nonlinear Animation

Nonlinear animation is a more advanced method of animation. Unlike keyframing, nonlinear animation is completely independent of time. You blend and layer animation sequences—called clips—to set up the motion for objects. You can also use this method to explore variations in parts of the animation without losing your previous work or affecting other parts of the animation. For example-you can make the walking part of the animation a clip and then adjust the leg motion without affecting the way the rest of the character moves.


Graph Editor
The Graph Editor is a helpful tool for tweaking values for keys you have set. It gives you a visual representation—a curved line—of the attributes that are animated. The animation time goes from left to right, and any keyed variable appears as a line that ramps up or down to indicate its value over time. It can help you visualize how things are changing and how fast. You can pan and zoom this panel like any other.

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Fig7-5 Graph Editor


To use it as a free-floating window, simply open it from the Hotbox (Window >Animation Editors> Graph Editor).

Graph Editor's Components
Menu bar

The Graph Editor menu bar contains tools and operations for manipulating animation curves and keys with in the graph view of the Graph editor. The Edit menu is similar to the one in text editors or word processors, except that you're working with keys instead of text.

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Fig 7-6 Menu Bar

The Edit Menu


The menu items appear under Edit menu behave in a similar fashion to the main Edit menu in the modeling view.
The View Menu


This menu controls which components are visible, and therefore editable, in the graph view of the Graph Editor.
The Select Menu


These options control which component of an animation curve are available for selection and editing.
The Curves Menu


The Curves menu gives you control over how the curves are set up with the keys in your scene.
The Keys menu


This menu includes Tangents which causes the manipulation of an in or out tangent handle.
The Tangents Menu


This describes the entry and exit of curve segments from a key.
The List Menu


This menu Loads the objects.]

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