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#!/bin/bash
#
# Rolf Niepraschk <Rolf.Niepraschk@ptb.de>, 2017-03-29
#
# Erzeugt aus einem leeren Messgeräte-Bild und neun 7-Segment-Bildern
# neue Messgeräte-Bilder mit zufälliger Anzeige
#
# Parameter=Anzahl der Mantissenziffern
# (wenn angegeben, dann kein Exponenent)
MAIN="KEITHLEY-2701" # device name
IMAGE_DIR=./images
MAX_FILES=10
MAX_DIGITS=7
if [ -n "$1" ]; then
NUMBER_OF_DIGITS=$1
SHOW_EXP=0
else
NUMBER_OF_DIGITS=$MAX_DIGITS
SHOW_EXP=1
fi
if (( $NUMBER_OF_DIGITS > $MAX_DIGITS )); then
NUMBER_OF_DIGITS=$MAX_DIGITS
fi
if (( $NUMBER_OF_DIGITS < 1 )); then
NUMBER_OF_DIGITS=1
fi
rm -rf "$IMAGE_DIR"
mkdir -p "$IMAGE_DIR"
dotFile='dot.png'
minusFile='minus.png'
emptyCanvas='xc:transparent'
digitFile[0]='digit-0.png'
digitFile[1]='digit-1.png'
digitFile[2]='digit-2.png'
digitFile[3]='digit-3.png'
digitFile[4]='digit-4.png'
digitFile[5]='digit-5.png'
digitFile[6]='digit-6.png'
digitFile[7]='digit-7.png'
digitFile[8]='digit-8.png'
digitFile[9]='digit-9.png'
digitFile[99]=$emptyCanvas # empty canvas
digitPos[7]='+185+220'
digitPos[6]='+207+220'
digitPos[5]='+229+220'
digitPos[4]='+251+220'
digitPos[3]='+273+220'
digitPos[2]='+295+220'
digitPos[1]='+317+220'
dotPos[7]=${digitPos[7]}
dotPos[6]=${digitPos[6]}
dotPos[5]=${digitPos[5]}
dotPos[4]=${digitPos[4]}
dotPos[3]=${digitPos[3]}
dotPos[2]=${digitPos[2]}
dotPos[1]=${digitPos[1]}
for ((FNb=1; FNb<=MAX_FILES; FNb++)); do
DPR=$((RANDOM % $NUMBER_OF_DIGITS + 1)) # random dot position (1..$NUMBER_OF_DIGITS)
for i in {1..7}; do
DNR[$i]=$((RANDOM % 10)) # random digit number (0..9)
if [ $DPR == $i ]; then
DF[$i]="$dotFile"
DP[$i]="." # dot character
else
DF[$i]=$emptyCanvas
DP[$i]=""
fi
done
fname="$IMAGE_DIR/$MAIN@$value@.png"
value=""
for (( i=1; i<=$MAX_DIGITS; i++ )); do
if (( $i <= $NUMBER_OF_DIGITS )); then
eval DIGIT$i=${digitFile[ ${DNR[i]} ]}
eval DF$i=${DF[i]}
value+="${DNR[i]}${DP[i]}"
else
eval DIGIT$i=$emptyCanvas;
eval DF$i=$emptyCanvas;
fi
done
fname="$IMAGE_DIR/$MAIN@$value@.png"
convert body.png \
$DIGIT1 -geometry ${digitPos[7]} -composite \
$DF1 -geometry ${dotPos[7]} -composite \
$DIGIT2 -geometry ${digitPos[6]} -composite \
$DF2 -geometry ${dotPos[6]} -composite \
$DIGIT3 -geometry ${digitPos[5]} -composite \
$DF3 -geometry ${dotPos[5]} -composite \
$DIGIT4 -geometry ${digitPos[4]} -composite \
$DF4 -geometry ${dotPos[4]} -composite \
$DIGIT5 -geometry ${digitPos[3]} -composite \
$DF5 -geometry ${dotPos[3]} -composite \
$DIGIT6 -geometry ${digitPos[2]} -composite \
$DF6 -geometry ${dotPos[2]} -composite \
$DIGIT7 -geometry ${digitPos[1]} -composite \
$DF7 -geometry ${dotPos[1]} -composite \
$fname
exiv2 -M"set Exif.Image.ImageDescription value=$value" $fname
echo -e "$FNb:\t$fname"
done # MAX_FILES
exit
-----------------------------------------------------------------------
Auslesen der Exif-Daten:
exiv2 -g Exif.Image.ImageDescription -P v ./images/151.108@GERAET_X.png
--> value=151.108
echo 1: $DIGIT1 -geometry ${digitPos[7]} -composite
echo 2: $DF1 -geometry ${dotPos[7]} -composite
echo 3: $DIGIT2 -geometry ${digitPos[6]} -composite
echo 4: $DF2 -geometry ${dotPos[6]} -composite
echo 5: $DIGIT3 -geometry ${digitPos[5]} -composite
echo 6: $DF3 -geometry ${dotPos[5]} -composite
echo 7: $DIGIT4 -geometry ${digitPos[4]} -composite
echo 8: $DF4 -geometry ${dotPos[4]} -composite
echo 9: $DIGIT5 -geometry ${digitPos[3]} -composite
echo 10: $DF5 -geometry ${dotPos[3]} -composite
echo 11: $DIGIT6 -geometry ${digitPos[2]} -composite
echo 12: $DF6 -geometry ${dotPos[2]} -composite
echo 13: $DIGIT7 -geometry ${digitPos[1]} -composite
echo 14: $DF7 -geometry ${dotPos[1]} -composite
echo 15: $fname
exit