drone hsl et rgb>int

function HSL(h, s, l)
   if s == 0 then return l,l,l end
   h, s, l = h/256*6, s/255, l/255
   local c = (1-math.abs(2*l-1))*s
   local x = (1-math.abs(h%2-1))*c
   local m,r,g,b = (l-.5*c), 0,0,0
   if h < 1     then r,g,b = c,x,0
   elseif h < 2 then r,g,b = x,c,0
   elseif h < 3 then r,g,b = 0,c,x
   elseif h < 4 then r,g,b = 0,x,c
   elseif h < 5 then r,g,b = x,0,c
   else              r,g,b = c,0,x
   end
   return math.ceil((r+m)*256),math.ceil((g+m)*256),math.ceil((b+m)*256)
end

function rgbToInt(r, g, b)
	return 256*256*r+256*g+b
end