particleMassVariation
The range, in kilograms, of randomized particle masses. Animatable.
Declaration
var particleMassVariation: CGFloat { get set }Discussion
Setting a nonzero value for this property randomizes the effect of the particleMass property. SceneKit randomly adjusts the mass of each particle by up to half the particleMassVariation value. For example, if the particleMass value is 1.0 kilograms and the particleMassVariation value is 0.5 kilograms, each particle uses a random mass value between 0.75 and 1.25 kilograms for physics simulation.
The default value is 0.0 kilograms, specifying no randomization.
You can animate changes to this property’s value. See Animating SceneKit Content.