Points_ to append to.Origin_ is the bottom-most point of the cylinder.Axis_ is the orientation of the cylinder.Radius_ is the radius of the cylinder.Height_ is the height of the cylinder.NumPoints_ is the number of points to generate.IncludeEndCaps_ determines whether or not points are generated on the end caps of the cylinder.SpiralSeed_ is the starting index for golden spiral generation. When using this method to continue a spiral started elsewhere, `SpiralSeed_ should equal the number of particles already created.