How can I keep a maximum distance between two normalised values?

Question

this is probably very simple...

I want to have a value that always keeps a fixed seperation between itself and another value on a normalised 0,1 scale

Starting with:

!min + !max

as !min goes up and the sum clips at 1, then how can I arithmetically make the !max wrap around to below the !min thereby always keeping its distance?

Comments

not quite the answer, but this SmallTalk function will normalise to 0,1 from arbitrary min and max

"normalise an input to 0,1 clipping to a min and max"

| norm |


norm := [:value :min :max |
    | clippedToMinMax |
    clippedToMinMax := (value vmin: max) vmax: min.
    (clippedToMinMax - min) / (max - min)
    ].

norm value: !In value: !Min value: !Max

---

Not sure exactly how you want it to behave. Could you give a couple of numeric examples?  Thanks!

Answer 1

How about: | min max | min := !Min clipTo01. max := min + !Distance - ((min + !Distance) gt: 1).