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