On Mon, Jul 25, 2022 at 01:17:38PM +0200, Thomas Schmitt wrote:
> #!/bin/bash
> rhex="$(printf '%2.2x' "$r")"
As of bash 3.1, you can use printf -v rhex %2.2x "$r"
> ghex="$(printf '%2.2x' "$g")"
Same.
> bstart="$(expr "(" "$r" + "$g" ")" / 2 + "$blue_advantage")"
bstart=$(( (r+g)/2 + blue_advantage ))
> if test "$bstart" -lt "$blue_base"
Not wrong, but you could also use if ((bstart < blue_base))
> for b in $(eval echo $(echo '{'"$bstart"..255..8'}'))
for ((b=bstart; b<=255; b+=8))
> bhex="$(printf '%2.2x' "$b")"
> echo "#${rhex}${ghex}${bhex}"
Oh, is this what the *hex variables are for? Why not just leave them
in pseudo-integer form the whole time, and then use a single printf *here*
to convert them to hex for output?
printf '#%2.2x%2.2x%2.2x\n' "$r" "$g" "$b"
