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Introducing Maya® 2011 by Dariush Derakhshani

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Basic Relationships: Set-Driven Keys

A favorite feature for character riggers is the set-driven key (SDK). A set-driven key establishes a relationship for objects that lets you create controls that drive certain features of a character or an object in a scene.

Before you can use an SDK, you must create extra attributes and attach them to a character’s top node. These new attributes drive part of the character’s animation. The term character is used broadly here. For example, you can set up a vehicle so that an SDK turns its wheels.

Let’s start with a simple SDK relationship between two objects. You’ll create a relationship between a ball and a cone. As the ball moves up in the Y-axis, the cone spins in the X-axis. As the ball descends, the cone ...

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