51 lines
2.3 KiB
Bash
Executable File
51 lines
2.3 KiB
Bash
Executable File
#! /bin/bash
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LED_LENGTH=12
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MAX_BRIGHTNESS=255
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MIN_BRIGHTNESS=0
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SLEEP_TIME=.001
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IP="172.23.92.5"
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PORT="49152"
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GAMMA_LUT=(0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 4 4 4 4 4 5 5 5 5 6 6 6 6 7 7 7 7 8 8 8 9 9 9 10 10 10 11 11 11 12 12 13 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 24 24 25 25 26 27 27 28 29 29 30 31 32 32 33 34 35 35 36 37 38 39 39 40 41 42 43 44 45 46 47 48 49 50 50 51 52 54 55 56 57 58 59 60 61 62 63 64 66 67 68 69 70 72 73 74 75 77 78 79 81 82 83 85 86 87 89 90 92 93 95 96 98 99 101 102 104 105 107 109 110 112 114 115 117 119 120 122 124 126 127 129 131 133 135 137 138 140 142 144 146 148 150 152 154 156 158 160 162 164 167 169 171 173 175 177 180 182 184 186 189 191 193 196 198 200 203 205 208 210 213 215 218 220 223 225 228 231 233 236 239 241 244 247 249 252 255)
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sign() {
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[ $1 -lt 0 ] && echo "-1"; [ $1 -eq 0 ] && echo "0"; [ $1 -gt 0 ] && echo "1"
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}
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LED_COLORS=()
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LED_COLORS_TARGET=()
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i=0
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while [ $i -lt $((3*$LED_LENGTH)) ]; do
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LED_COLORS+=(0)
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LED_COLORS_TARGET+=(0)
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i=$(($i+1))
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done
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while true; do
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COLOR_STRING=""
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BYTE_LENGTH=0
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BYTE_LENGTH_MAX=$((3*$LED_LENGTH))
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while [ $BYTE_LENGTH -lt $BYTE_LENGTH_MAX ]; do
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R="${LED_COLORS[$BYTE_LENGTH]}"
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R_="${LED_COLORS_TARGET[$BYTE_LENGTH]}"
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G="${LED_COLORS[$BYTE_LENGTH+1]}"
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G_="${LED_COLORS_TARGET[$BYTE_LENGTH+1]}"
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B="${LED_COLORS[$BYTE_LENGTH+2]}"
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B_="${LED_COLORS_TARGET[$BYTE_LENGTH+2]}"
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COLOR_STRING+="$(printf '%02x%02x%02x' "${GAMMA_LUT[$R]}" "${GAMMA_LUT[$G]}" "${GAMMA_LUT[$B]}")"
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[ $R_ -eq $R ] && LED_COLORS_TARGET[$BYTE_LENGTH]="$(( RANDOM % ($MAX_BRIGHTNESS - $MIN_BRIGHTNESS) + $MIN_BRIGHTNESS ))"
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[ $G_ -eq $G ] && LED_COLORS_TARGET[$BYTE_LENGTH+1]="$(( RANDOM % ($MAX_BRIGHTNESS - $MIN_BRIGHTNESS) + $MIN_BRIGHTNESS ))"
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[ $B_ -eq $B ] && LED_COLORS_TARGET[$BYTE_LENGTH+2]="$(( RANDOM % ($MAX_BRIGHTNESS - $MIN_BRIGHTNESS) + $MIN_BRIGHTNESS ))"
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LED_COLORS[$BYTE_LENGTH]=$(($R+$(sign $(($R_-$R)))))
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LED_COLORS[$BYTE_LENGTH+1]=$(($G+$(sign $(($G_-$G)))))
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LED_COLORS[$BYTE_LENGTH+2]=$(($B+$(sign $(($B_-$B)))))
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((BYTE_LENGTH+=3))
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done
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COLOR_STRING="r$(echo "$(printf '%04x' "$((${#LED_COLORS[*]}+2))")0000$COLOR_STRING" | sed -e 's/\(..\)/\\x\1/g')"
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echo -en "$COLOR_STRING" > /dev/udp/$IP/$PORT
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sleep $SLEEP_TIME
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done
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