I would very much like to understand how to set this up and have been trying to recreate the setup in my own scene, but now I have run into some problems:
the 'Hair_Emitter" has a point-cluster named “Hair” on which lay a couple of Weight Maps.
It is unclear to me what these different Weight Maps (named Clone_Map, Density_Map, Spread_Map, SpreadRoot_Map and SpreadTip_Map) do and how to properly generate them.
Creating all the maps and painting the Density_Map leaves me with the following result. It's plain to see the guides (red) are generated, but the hairs are not extruded to follow the guides...
Help would be very welcome at this point...
Here is the scene I have created: NB "ramp" means "disaster" in Dutch... ;)