Create a fan curve?

Is there a way to set a fan curve? If you don't know what I mean, just imagine a table where "If the ambient is temperature X, then set fan to speed Y". So I could say "At 60° set the fan to 0%. At 80° set the fan to 100%" and then at 70° it would set the fan to 50%

If not, this should be a thing. I want the fan to go faster the warmer it is in the bedroom.