Unfinished CameraControler library

CameraControler.lua

if ( CLIENT ) then

	if ( CameraControler ) then return end

	CameraControler = {}
	CameraControler.Cameras = {}
	CameraControler.Selected = 0

	function CameraControler.SelectCamera( cameraID )
		if ( CameraControler.CameraExists( cameraID ) ) then
			CameraControler.Selected = cameraID
			return CameraControler.GetSelectedCamera( )
		end
		return false
	end

	function CameraControler.GetSelectedCamera( )
		return CameraControler.GetCamera( CameraControler.Selected ) or false
	end

	function CameraControler.CameraExists( cameraID )
		return CameraControler.GetCamera( cameraID ) and true or false
	end

	function CameraControler.GetCamera( cameraID )
		return CameraControler.Cameras[ cameraID ] or false
	end

	function CameraControler.AddCamera( cameraID, cameraObject )
		CameraControler.Cameras[ cameraID ] = cameraObject
	end

	function CameraControler.DestroyCamera( cameraID )
		CameraControler.Cameras[ cameraID ] = nil
	end

	function CameraControler.CalcView( Pl, vPosition, aAngles, fFOV, nearZ, farZ )
		local Camera = CameraControler.GetSelectedCamera( )
		if ( Camera ) then
			local view = {}
			view.origin = Camera.GetPosition and Camera:GetPosition( Pl, vPosition, aAngles, fFOV ) or vPosition
			view.angles = Camera.GetAngles and Camera:GetAngles( Pl, vPosition, aAngles, fFOV ) or aAngles
			view.fov = Camera.GetFieldOfView and Camera:GetFieldOfView( Pl, vPosition, aAngles, fFOV ) oe fFOV
			view.DrawViewer = Camera.ShouldDrawPlayer and Camera:ShouldDrawPlayer( Pl, vPosition, aAngles, fFOV ) or false
			view.znear = Camera.GetZNear and Camera:GetZNear( Pl, vPosition, aAngles, fFOV ) or nearZ
			view.zfar = Camera.GetZFar and Camera:GetZFar( Pl, vPosition, aAngles, fFOV ) or farZ
			
			return view
		end
	end

	hook.Add( "CalcView", "CameraControler.CalcView", CameraControler.CalcView )
	
else

	--[[
	function CameraControler.SetupVisibility( )
		local Camera = CameraControler.GetSelectedCamera( )
		if ( Camera and Camera.SetupVisibility ) then
			local origin = Camera.SetupVisibility( )
			if ( origin ) then 
				AddOriginToPVS( origin )
			end
		end
	end
	]]


end