Additional particle generator controls can be found in the Param2 tab.

Rotation fieldsDisplays the orientation for particles that have just been born (spawned).

Rotation Variance fieldsDisplays the variation of the rotation of a particle once spawned from the particle generator.

Spin fieldsDisplays the value to act as a speed setting to a rotation animated over time. For example, a value of 30 causes a particle to spin 30 degrees per frame around its axis.

Spin Variance fieldsDisplays the variation to the Spin channel once particles are spawned from the particle generator.

Colour V fieldDisplays the variation of the colour of each particle based on the colour set in the Diffuse colour bar (Particle Geometry menu). The variance is expressed as a percentage. Colour Variance works with surfaces or geometries.

Use Seed buttonEnable to override the particle’s seed (useful if you want to change the position of each particle in the particle stream).

Seed fieldDisplays the random seed value for the particle stream properties.

TailSize fieldDisplays the width of a particle's tail. TailSize is expressed as a percentage:

• At 100%, the tail is the same width as the head.
• At 200%, the tail is twice as wide as the head.

TailSize only works with quad and cone particle types.

TailSize Variance fieldDisplays the variation of the TailSize value (as a percentage).

Mass fieldDisplays the mass of each particle. Mass is used with damping when manipulating particles. See Setting Manipulator Properties.

Mass Variance fieldDisplays the variation of the mass (as a percentage).