public override void InitParticle( ref Particle particle )
{
particle.Rotation = rotationRangeStart + ( Utility.UnitRandom() * ( rotationRangeEnd - rotationRangeStart ) );
particle.RotationSpeed = rotationSpeedRangeStart + ( Utility.UnitRandom() * ( rotationSpeedRangeEnd - rotationSpeedRangeStart ) );
}