Additional particle generator controls can be found in the Param2 tab.
Rotation fieldsSets the orientation for particles that have just been born (spawned).
Rotation Variance fieldsVaries the rotation of a particle once spawned from the particle generator.
Spin fieldsActs 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 fieldsAdds a variation to the Spin channel once particles are spawned from the particle generator.
Colour V fieldVaries 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.
TailSize fieldSets the width of a particle's tail. TailSize is expressed as a percentage:
TailSize only works with quad and cone particle types.
TailSize Variance fieldVaries the TailSize value as a percentage.
Mass fieldSets and animates the mass of each particle. Mass is used with damping when manipulating particles. See Setting Manipulator Properties.
Mass Variance fieldVaries the mass as a percentage.