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MEL Scripting for Maya Animators, 2nd Edition by Mark R. Wilkins, Chris Kazmier

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Chapter 4. Controlling Particles with Expressions

In this chapter you will learn

  • The difference between per-object and per-particle attributes.

  • What a vector is.

  • How to create and manipulate vector variables.

  • The difference between ordinary and particle expressions.

  • Why to use ordinary expressions rather than particle expressions when you can.

  • How ordinary expressions can be used to control particles.

  • How to control particles with a particle expression.

  • Useful hints for efficiently using particle expressions.

  • How to think through a more complex particle expression application.

Two Kinds of Particle Object Attributes: Per Object and Per Particle

Certain particle object attributes are shared by all of the particles in the object. For example, if you create ...

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