Instance Property

particleSpeedRange

The range of allowed random values for a particle’s initial speed.

Declaration

@property(nonatomic) CGFloat particleSpeedRange;

Discussion

The default value is 0.0. If non-zero, the speed of each particle is randomly determined and may vary by plus or minus half of the range value.

See Also

Controlling Particle Velocity and Acceleration

particleSpeed

The average initial speed of a new particle, in points per second.

emissionAngle

The average initial direction of a particle, expressed as an angle in radians.

emissionAngleRange

The range of allowed random values for a particle’s initial direction, expressed as an angle in radians.

xAcceleration

The acceleration to apply to a particle’s horizontal velocity.

yAcceleration

The acceleration to apply to a particle’s vertical velocity.

particleZPositionSpeed

The speed at which the particle’s depth changes.

Deprecated