utility nailsurface "Automatic Hammer"
(
	pickbutton picksurf "Pick Surface"
	pickbutton picknail "Pick Nail"
	label l1 ""
	button nailit "Nail it!"
	progressbar pb
	
	on picksurf picked ps do
	(
	  picksurf.text = ps.name	)

	on picknail picked ps do
	(
	  picknail.text = ps.name
	)
	
	on nailit pressed do
	(
		callbacks.removescripts id:#nailcb
		if (picksurf == undefined) then (messagebox "Pick a surface!")
		else if (picknail == undefined) then (messagebox "pick a nail!")
		else (
			maxvert = picksurf.object.numverts
			u = picksurf.object
			settmp = #()
			for j = 1 to maxvert do
			(
				t = copy picknail.object
				append settmp t
				
-- 				t.position.controller = position_script()
-- 				t.position.controller.script = (
-- 				"(in coordsys world (getvert $" + u.name + " " + (j as string) + "))\n")
				
				t.pos = (getvert u j)
				t.dir = (getNormal u  j ) ---this is the line that sets the direction of the nail to the normal of the vertex
				t.parent = u
				
				pb.value = ((100*((j as float)/(maxvert as float))) as integer)
				
				
				hide t
			)
			selectionsets["nailset"] = settmp
			settmp = undefined
			callbacks.addscript #prerender ("unhide selectionsets[#nailset]") id:#nailcb persistent:TRUE
			callbacks.addscript #postrender ("hide selectionsets[#nailset]") id:#nailcb persistent:TRUE
			messagebox "Script Finished."
		)
	)
)