Fortraneries/Fraktalism/mkjuliagif.sh

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#!/bin/bash
#
# build the prog
#
make mkjulia
if [ $? -ne 0 ] ; then
echo
echo "Make error " $?
exit 1
fi
cxa=" -1.5 "
cya=" -1.0 "
cxb=" 1.1 "
cyb=" 2.1 "
nbi=" 180 "
#
# run the prog
#
workdir="frames/julia/"
for foo in $( seq 0 $(( nbi - 1)) )
do
img=$(printf "%s/%05d.pnm" $workdir $foo)
Ka=$( echo "$foo / $nbi" | bc -l)
Kb=$( echo "1.0 - $Ka" | bc -l)
# echo $Ka $Kb
cx=$(echo "($cxa*$Ka) + ($cxb*$Kb)" | bc -l)
cy=$(echo "$cya*$Ka + $cyb*$Kb" | bc -l)
printf "%5d %4.6f %4.6f %4.6f %4.6f\n" \
$foo $Ka $Kb $cx $cy
./mkjulia $img $cx $cy
done
mogrify \
-gravity South-East \
-font Courier-Bold \
-pointsize 12 \
-fill Black \
-annotate +10+4 "Konrad+tTh 2024" \
"${workdir}/*.pnm"
echo ; echo "Encoding, please wait..."
convert -delay 10 $workdir/*.pnm color-julia.gif