if  math.abs(grooveCenter.y) < distance then
			distance = math.abs(grooveCenter.y)
			pickedEdge = "north"
		end
		if  math.abs(h - grooveCenter.y) < distance then
			distance = math.abs(h - grooveCenter.y)
			pickedEdge = "south"
		end 	
		if  math.abs(grooveCenter.x) < distance then
			distance = math.abs(grooveCenter.x)
			pickedEdge = "east"
		end 
		if  math.abs(grooveCenter.x - w) < distance then
			distance = math.abs(grooveCenter.x - w)
			pickedEdge = "west"
		end