#!/bin/bash # # Developed by Fred Weinhaus 2/28/2018 .......... revised 2/28/2018 # # ------------------------------------------------------------------------------ # # Licensing: # # Copyright © Fred Weinhaus # # My scripts are available free of charge for non-commercial use, ONLY. # # For use of my scripts in commercial (for-profit) environments or # non-free applications, please contact me (Fred Weinhaus) for # licensing arrangements. My email address is fmw at alink dot net. # # If you: 1) redistribute, 2) incorporate any of these scripts into other # free applications or 3) reprogram them in another scripting language, # then you must contact me for permission, especially if the result might # be used in a commercial or for-profit environment. # # My scripts are also subject, in a subordinate manner, to the ImageMagick # license, which can be found at: http://www.imagemagick.org/script/license.php # # ------------------------------------------------------------------------------ # #### # # USAGE: polyring [-d duplicates] [-f format] [-b bcolor] [-m maxsize] infile1 # [infile2 infile3 ... ] outfile # # USAGE: polyring [-h or -help] # # OPTIONS: # # -d duplicates duplicate images to use when only one input image is supplied, # including the input; integer>=3; default=6; the associated # polygon number of sides will be the value of duplicates; # if multiple images are supplied, then that will take precedence; # if more than one image is supplied, then there must be at # minimum 3 images supplied and no more than 6 images supplied # -f format format for the output; polygon or ring; default=polygon # -b bcolor color to use for the background color of the output; # default=white # -m maxsize output image's maximum size; integer>0; default is twice the # input image's minimum width plus twice the minimum height plus # twice computed radius # ### # # NAME: POLYRING # # PURPOSE: To create a polygon ring from one or more images. # # DESCRIPTION: POLYRING creates a polygon ring image from one or more images. One input # may be duplicated multiple times so that there are 3 or more copies. Or 3 or more # different input images may be supplied. If multiple input images are supplied, they # will be center cropped to the minimum dimensions from all the images supplied. # # OPTIONS: # # -d duplicates ... DUPLICATES is the number of duplicate images to use when only one # input image is supplied, including the input. Values are integer>=3. The default=6. # The associated polygon number of sides will be the value of duplicates. If multiple # images are supplied, then that will take precedence. If more than one image is # supplied, then there must be at minimum 3 images supplied and no more than # 6 images supplied. # # -f format ... FORMAT for the output. Choices are: polygon (p) or ring (r). The # default=polygon. The polygon shape will be determined by the total number of images # used, including the duplicates. # # -b bcolor ... BCOLOR is the background color of the output. Any valid IM color # is allowed. The default=white. # # -m maxsize ... MAXSIZE is the output image's maximum size (dimension). The value is # an integer>0. The default is twice the input image's minimum width plus twice the # minimum height plus twice computed radius. # # CAVEAT: No guarantee that this script will work on all platforms, # nor that trapping of inconsistent parameters is complete and # foolproof. Use At Your Own Risk. # ###### # # set default values duplicates=6 # number of duplicates of a single input image format="polygon" # polygon or ring bcolor="white" # background color maxsize="" # maximum output size # set directory for temporary files dir="." # suggestions are dir="." or dir="/tmp" # set up functions to report Usage and Usage with Description PROGNAME=`type $0 | awk '{print $3}'` # search for executable on path PROGDIR=`dirname $PROGNAME` # extract directory of program PROGNAME=`basename $PROGNAME` # base name of program usage1() { echo >&2 "" echo >&2 "$PROGNAME:" "$@" sed >&2 -e '1,/^####/d; /^###/g; /^#/!q; s/^#//; s/^ //; 4,$p' "$PROGDIR/$PROGNAME" } usage2() { echo >&2 "" echo >&2 "$PROGNAME:" "$@" sed >&2 -e '1,/^####/d; /^######/g; /^#/!q; s/^#*//; s/^ //; 4,$p' "$PROGDIR/$PROGNAME" } # function to report error messages errMsg() { echo "" echo $1 echo "" usage1 exit 1 } # function to test for minus at start of value of second part of option 1 or 2 checkMinus() { test=`echo "$1" | grep -c '^-.*$'` # returns 1 if match; 0 otherwise [ $test -eq 1 ] && errMsg "$errorMsg" } # test for correct number of arguments and get values if [ $# -eq 0 ] then # help information echo "" usage2 exit 0 elif [ $# -gt 13 ] then errMsg "--- TOO MANY ARGUMENTS WERE PROVIDED ---" else while [ $# -gt 0 ] do # get parameter values case "$1" in -h|-help) # help information echo "" usage2 exit 0 ;; -d) # get duplicates shift # to get the next parameter - spread # test if parameter starts with minus sign errorMsg="--- INVALID DUPLICATES SPECIFICATION ---" #checkMinus "$1" duplicates=`expr "$1" : '\([0-9]*\)'` [ "$duplicates" = "" ] && errMsg "DUPLICATES=$duplicates MUST BE A NON-NEGATIVE INTEGER" test1=`echo "$duplicates <= 2" | bc` [ $test1 -eq 1 ] && errMsg "--- DUPLICATES=$duplicates MUST BE A INTEGER GREATER THAN 2 ---" ;; -f) # get format shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID FORMAT SPECIFICATION ---" checkMinus "$1" format=`echo "$1" | tr '[A-Z]' '[a-z]'` case "$format" in polygon|p) format="polygon" ;; ring|r) format="ring" ;; *) errMsg "--- FORMAT=$format IS AN INVALID VALUE ---" esac ;; -b) # get bcolor shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID BCOLOR SPECIFICATION ---" checkMinus "$1" bcolor="$1" ;; -m) # get maxsize shift # to get the next parameter - spread # test if parameter starts with minus sign errorMsg="--- INVALID MAXSIZE SPECIFICATION ---" #checkMinus "$1" maxsize=`expr "$1" : '\([0-9]*\)'` [ "$maxsize" = "" ] && errMsg "MAXSIZE=$maxsize MUST BE A NON-NEGATIVE INTEGER" test1=`echo "$maxsize <= 0" | bc` [ $test1 -eq 1 ] && errMsg "--- MAXSIZE=$maxsize MUST BE A POSITIVE INTEGER ---" ;; -) # STDIN and end of arguments break ;; -*) # any other - argument errMsg "--- UNKNOWN OPTION ---" ;; *) # end of arguments break ;; esac shift # next option done # # get infiles and outfile num=$# numi=$((num-1)) if [ $num -eq 2 ]; then infile1="$1" outfile="$2" elif [ $num -eq 3 ]; then errMsg "--- ILLEGAL NUMBER OF IMAGES SUPPLIED ---" elif [ $num -eq 4 ]; then infile1="$1" infile2="$2" infile3="$3" outfile="$4" elif [ $num -eq 5 ]; then infile1="$1" infile2="$2" infile3="$3" infile4="$4" outfile="$5" elif [ $num -eq 6 ]; then infile1="$1" infile2="$2" infile3="$3" infile4="$4" infile5="$5" outfile="$6" elif [ $num -eq 7 ]; then infile1="$1" infile2="$2" infile3="$3" infile4="$4" infile5="$5" infile6="$6" outfile="$7" else errMsg "--- ILLEGAL NUMBER OF IMAGES SUPPLIED ---" fi fi # set directory for temporary files # tmpdir="/tmp" tmpdir="." dir="$tmpdir/POLYRING.$$" mkdir "$dir" || errMsg "--- FAILED TO CREATE TEMPORARY FILE DIRECTORY ---" trap "rm -rf $dir; exit 0" 0 trap "rm -rf $dir; exit 1" 1 2 3 15 # read input images if [ $numi -ge 1 -a $numi -ne 2 ]; then convert -quiet "$infile1" $dir/tmpI1.mpc || \ echo "--- FILE $infile1 DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO SIZE ---" fi if [ $numi -ge 3 ]; then convert -quiet "$infile2" -alpha off $dir/tmpI2.mpc || \ echo "--- FILE $infile2 DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO SIZE ---" convert -quiet "$infile3" -alpha off $dir/tmpI3.mpc || \ echo "--- FILE $infile3 DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO SIZE ---" fi if [ $numi -ge 4 ]; then convert -quiet "$infile4" -alpha off $dir/tmpI4.mpc || \ echo "--- FILE $infile4 DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO SIZE ---" fi if [ $numi -ge 5 ]; then convert -quiet "$infile5" -alpha off $dir/tmpI5.mpc || \ echo "--- FILE $infile5 DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO SIZE ---" fi if [ $numi -eq 6 ]; then convert -quiet "$infile6" -alpha off $dir/tmpI6.mpc || \ echo "--- FILE $infile6 DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO SIZE ---" fi # get min dimensions if [ $numi -ge 3 ]; then wlist="" hlist="" for ((i=1; i<=numi; i++)); do ww=`convert -ping $dir/tmpI$i.mpc -format "%w" info:` hh=`convert -ping $dir/tmpI$i.mpc -format "%h" info:` #echo "ww=$ww; hh=$hh;" wlist="$wlist $ww" hlist="$hlist $hh" done width=`echo $wlist | tr " " "\n" | sort -n -k1,1 | head -n 1` height=`echo $hlist | tr " " "\n" | sort -n -k1,1 | head -n 1` else width=$(convert -ping "$infile1" -format "%w" info:) height=$(convert -ping "$infile1" -format "%h" info:) fi #echo "width=$width; height=$height;" # set up for resize if [ "$maxsize" != "" ]; then resizing="-resize ${maxsize}x${maxsize}" else resizing="" fi # process the image(s) if [ "$format" = "polygon" -a $numi -eq 1 ]; then number=$duplicates angle=$(convert xc: -format "%[fx:360/$number]" info:) ix=$(convert xc: -format "%[fx:$width/2]" info:) iy=$(convert xc: -format "%[fx:$height/2]" info:) radius=$(convert xc: -format "%[fx:($height/2) + $width/(2*tan((pi/180)*($angle/2)))]" info:) #echo "angle=$angle; width=$width; height=$height; ix=$ix; iy=$iy; radius=$radius;" for ((i=1; i<=number; i++)); do rot1=$(convert xc: -format "%[fx:$i*$angle]" info:) rot2=$(convert xc: -format "%[fx:$rot1+90]" info:) ox=$(convert xc: -format "%[fx:($radius+$width)+$radius*cos((pi/180)*$rot1)]" info:) oy=$(convert xc: -format "%[fx:($radius+$height)+$radius*sin((pi/180)*$rot1)]" info:) #echo "rot1=$rot1; rot2=$rot2; ox=$ox; oy=$oy" convert $dir/tmpI1.mpc -virtual-pixel none +distort SRT "$ix,$iy 1 $rot2 $ox,$oy" $dir/tmp_$i.miff done convert $dir/tmp_*.miff -background "$bcolor" -layers merge +repage $resizing "$outfile" elif [ "$format" = "polygon" -a $numi -ge 3 ]; then number=$numi angle=$(convert xc: -format "%[fx:360/$number]" info:) ix=$(convert xc: -format "%[fx:$width/2]" info:) iy=$(convert xc: -format "%[fx:$height/2]" info:) radius=$(convert xc: -format "%[fx:($height/2) + $width/(2*tan((pi/180)*($angle/2)))]" info:) #echo "angle=$angle; width=$width; height=$height; ix=$ix; iy=$iy; radius=$radius;" for ((i=1; i<=number; i++)); do rot1=$(convert xc: -format "%[fx:$i*$angle]" info:) rot2=$(convert xc: -format "%[fx:$rot1+90]" info:) ox=$(convert xc: -format "%[fx:($radius+$width)+$radius*cos((pi/180)*$rot1)]" info:) oy=$(convert xc: -format "%[fx:($radius+$height)+$radius*sin((pi/180)*$rot1)]" info:) #echo "rot1=$rot1; rot2=$rot2; ox=$ox; oy=$oy" convert $dir/tmpI$i.mpc -gravity center -crop ${width}x${height}+0+0 +repage \ -virtual-pixel none +distort SRT "$ix,$iy 1 $rot2 $ox,$oy" $dir/tmp_$i.miff done convert $dir/tmp_*.miff -background "$bcolor" -layers merge +repage $resizing "$outfile" elif [ "$format" = "ring" -a $numi -eq 1 ]; then dups=$((duplicates-1)) convert $dir/tmpI1.mpc -duplicate $dups +append -virtual-pixel "$bcolor" -distort Arc 360 $resizing "$outfile" elif [ "$format" = "ring" -a $numi -eq 3 ]; then convert $dir/tmpI1.mpc $dir/tmpI2.mpc $dir/tmpI3.mpc \ -gravity center -crop ${width}x${height}+0+0 +repage \ +append -virtual-pixel "$bcolor" -distort Arc 360 $resizing "$outfile" elif [ "$format" = "ring" -a $numi -eq 4 ]; then convert $dir/tmpI1.mpc $dir/tmpI2.mpc $dir/tmpI3.mpc $dir/tmpI4.mpc \ -gravity center -crop ${width}x${height}+0+0 +repage \ +append -virtual-pixel "$bcolor" -distort Arc 360 $resizing "$outfile" elif [ "$format" = "ring" -a $numi -eq 5 ]; then convert $dir/tmpI1.mpc $dir/tmpI2.mpc $dir/tmpI3.mpc $dir/tmpI4.mpc $dir/tmpI5.mpc \ -gravity center -crop ${width}x${height}+0+0 +repage \ +append -virtual-pixel "$bcolor" -distort Arc 360 $resizing "$outfile" elif [ "$format" = "ring" -a $numi -eq 6 ]; then convert $dir/tmpI1.mpc $dir/tmpI2.mpc $dir/tmpI3.mpc $dir/tmpI4.mpc $dir/tmpI5.mpc $dir/tmpI6.mpc \ -gravity center -crop ${width}x${height}+0+0 +repage \ +append -virtual-pixel "$bcolor" -distort Arc 360 $resizing "$outfile" fi exit 0