The Spin operator allows you to add spin motion to particles.
By Value: the magnitude will be set to an absolute value.
Inherit Previous: the magnitude will be set to the particle’s current spin magnitude.
Relative to radius: the spin magnitude will be relative to a particle’s radius.
Radius: the threshold radius value.
Relative to velocity: the spin magnitude will be relative to a particle’s velocity.
Velocity: the threshold velocity value.
Relative to mass: the spin magnitude will be relative to a particle’s mass.
Random 3D: the spin axis will be a random 3D vector.
World Space: the spin axis will be a user-defined vector in world-space coordinate.
Inherit Previous: the spin axis will be set to the particle’s current spin axis.
Travel direction: the spin axis will be aligned to the particle’s travel direction.
Travel direction: the spin axis will be aligned towards/away the closest input object, depending on the sign of the magnitude.
X/Y/Z: the values of the user-defined spin axis vector.
Allow mirror: controls whether some particles will spin in the opposite direction.
Divergence: the degrees of random divergence to apply to the resulting axis vector.
Input object list: the list of scene objects to use for towards/away spinning.
Distance: particles within this distance will be fully affected.
Falloff: the effect on particles beyond the base distance, but within this falloff distance, will diminish according to the inverse-square law.
Value: the amount to interpolate particle spin values from their previous value to the new value.