tweaking the Julia's fractal

Fraktalism/mkjuliagif.sh

@@ -11,28 +11,41 @@ if [ $? -ne 0 ] ; then
 	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 0 179)
+for foo in $( seq 0 $(( nbi - 1)) )
 do
-
 	img=$(printf "%s/%05d.pnm" $workdir $foo)
-	bar=$(echo "$foo / 247.0"			| bc -l)
-	cx=$(echo "0.5 * (1.52*c($foo/28.0))"		| bc -l)
-	cy=$(echo "0.5 * (1.45*s($foo/17.0))"		| bc -l)
 
+	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
 
-	sleep 145
-
 done
 
-./tagpicz.sh $workdir
+mogrify						\
+	-gravity South-East			\
+	-font Courier-Bold			\
+	-pointsize 12				\
+	-fill Black				\
+	-annotate +10+4 "Konrad+tTh 2024"	\
+	"${workdir}/*.pnm"
 
 echo ; echo "Encoding, please wait..."
 
 convert -delay 10 $workdir/*.pnm color-julia.gif
-# animate foo.gif &