particleMass
The mass, in kilograms, of each particle in the system. Animatable.
Declaration
var particleMass: CGFloat { get set }Discussion
A particle’s mass determines its resistance to forces. The effects of the dampingFactor property and any SCNPhysicsField objects affecting each particle are proportional to its mass. You can randomize the masses of particles in the system with the particleMassVariation property.
The default value is 1.0 kilograms.
You can animate changes to this property’s value. See Animating SceneKit Content.