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patched rainbow text

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crowetic 2025-07-15 17:59:28 -07:00
parent ff9e852444
commit de96d1f38e
1 changed files with 24 additions and 19 deletions
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43
Qortal-Setup-Linux.sh
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@ -11,31 +11,38 @@ NC='\033[0m'
render_gradient_string() {
local input="$1"
local regex='#([0-9a-fA-F]{6})(.)'
while [[ "$input" =~ $regex ]]; do
color="${BASH_REMATCH[1]}"
char="${BASH_REMATCH[2]}"
r=$((16#${color:0:2}))
g=$((16#${color:2:2}))
b=$((16#${color:4:2}))
printf "\e[38;2;%d;%d;%dm%s" "$r" "$g" "$b" "$char"
input="${input#"#${color}${char}"}"
local regex='^#([0-9a-fA-F]{6})(.)'
local rest
while [[ -n "$input" ]]; do
if [[ "$input" =~ $regex ]]; then
color="${BASH_REMATCH[1]}"
char="${BASH_REMATCH[2]}"
r=$((16#${color:0:2}))
g=$((16#${color:2:2}))
b=$((16#${color:4:2}))
printf "\e[38;2;%d;%d;%dm%s" "$r" "$g" "$b" "$char"
input="${input:9}" # strip exactly 7 (color) + 1 (char) = 8 chars, plus 1 for #
else
printf "%s" "${input:0:1}"
input="${input:1}"
fi
done
echo -e "\e[0m"
}
rainbowize_text() {
local text="$1"
local freq=0.15
local i=0
local output=""
local pi=3.14159265
local output=""
clamp() {
local val="$1"
local min="$2"
local max="$3"
local val="$1" min="$2" max="$3"
if (( val < min )); then echo "$min"
elif (( val > max )); then echo "$max"
else echo "$val"
@ -45,6 +52,7 @@ rainbowize_text() {
while IFS= read -r line || [ -n "$line" ]; do
for (( j=0; j<${#line}; j++ )); do
char="${line:$j:1}"
r=$(awk -v i="$i" -v f="$freq" 'BEGIN { printf("%d", 127 * (sin(f*i + 0) + 1)) }')
g=$(awk -v i="$i" -v f="$freq" 'BEGIN { printf("%d", 127 * (sin(f*i + 2*3.1415/3) + 1)) }')
b=$(awk -v i="$i" -v f="$freq" 'BEGIN { printf("%d", 127 * (sin(f*i + 4*3.1415/3) + 1)) }')
@ -53,14 +61,10 @@ rainbowize_text() {
g=$(clamp "$g" 50 230)
b=$(clamp "$b" 50 230)
rh=$(printf "%02x" "$r")
gh=$(printf "%02x" "$g")
bh=$(printf "%02x" "$b")
output+="#${rh}${gh}${bh}${char}"
output+="#$(printf '%02x%02x%02x' "$r" "$g" "$b")$char"
((i++))
done
output+=$'\n' # Important!
output+=$'\n'
done <<< "$text"
echo -ne "$output"
@ -69,6 +73,7 @@ rainbowize_text() {
# rainbowize_text() {
# local text="$1"
# local freq=0.15