Indicator Trying to find a indicator

[bradiae]

i am trying to find a indicator which is similar to a bollinger band accept the lines hugging the price are flat. so the same as BB a middle line, upper and lower all to be the same as how a bollinger would look but instead of the lines curving the lines stay straight so they can go horizontal, vertical and diagonally

i know there is donchian but that does not hug the price like BB i.e during trends either bottom or top line gets further away from price