GUI Compass / Landmarks?

I’m looking to create a Compass Gui similar to that of Skyrim in which Landmarks are visible.
Currently I have a working GUI that simply indicates N, E, S, W etc. However I’m struggling to get it to figure how to get it working with Landmarks / Locations?
I’ve read other forum posts about this however I cannot figure how to implement it.

This is an example of what I’m looking to achieve.

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local smoothness = 50/3

local player = game.Players.LocalPlayer
local camera = workspace.CurrentCamera

local dev = script.Parent

local lastY = 0
local units = {
	[dev.N ] = -math.pi * 4/4;
	[dev.NE] = -math.pi * 3/4;
	[dev.E ] = -math.pi * 2/4;
	[dev.SE] = -math.pi * 1/4;
	[dev.S ] =  math.pi * 0/4;
	[dev.SW] =  math.pi * 1/4;
	[dev.W ] =  math.pi * 2/4;
	[dev.NW] =  math.pi * 3/4;
}

function restrictAngle(angle)
	if angle < -math.pi then
		return angle + math.pi*2
	elseif angle > math.pi then
		return angle - math.pi*2
	else
		return angle
	end
end

game:GetService('RunService').PreRender:Connect(function(dt, ...)
	local look = camera.CoordinateFrame.lookVector
	local look = Vector3.new(look.x, 0, look.z).Unit
	local lookY = math.atan2(look.z, look.x)
	
	local difY = restrictAngle(lookY - lastY)
	lookY = restrictAngle(lastY + difY* 1 / 30 *smoothness)
	lastY = lookY
	
	for unit, rot in pairs(units) do
		rot = restrictAngle(lookY - rot)
		if math.sin(rot) > 0 then
			local cosRot = math.cos(rot)
			local cosRot2 = cosRot*cosRot
			
			unit.Visible = true
			unit.Position = UDim2.new(0.5 + cosRot*0.6, unit.Position.X.Offset, 0.5, 0)
		else
			unit.Visible = false
		end
	end
end)