#!/bin/bash # # Developed by Fred Weinhaus 9/17/2011 .......... 6/2/2015 # # ------------------------------------------------------------------------------ # # 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: vignette [-i inner] [-o outer] [-f feather] [-c color] [-a amount] infile outfile # USAGE: vignette [-help|-h] # # OPTIONS: # # -i inner inner radius of vignette where not darkened; # integer percent of image dimension; default=0 # -o outer outer radius of vignette where darkest; # integer percent of image dimension; default=150 # -f feather feathering amount for inner radius; float>=0; # default=0 # -c color vignette color; any IM opaque color; default=black # -a amount vignette amount; 0<=integer<=0; default=100 # # ### # # NAME: VIGNETTE # # PURPOSE: Applies a vignette effect to a picture. # # DESCRIPTION: VIGNETTE applies a vignette effect to a picture. The # inner and outer radii of the vignette can be controlled as well as # the vignette color and amount. For non-square images the vignette # effect will be elliptical to reach the corners. # # # OPTIONS: # # -i inner ... INNER vignette radius as percent of image dimension. The # default=0 means the vignette starts near the image center. # # -o outer ... OUTER vignette radius as percent of image dimension. The # default=150, which is about the image corners. # # -f feather ... FEATHER is the amount of feathering or smoothing of the # transition around the inner radius. Values are floats>0. The default=0 # # -c color ... COLOR is the color of vignette. Any valid opaque IM color # is allowed. The default=black. # # -a amount ... AMOUNT is the overal coloring amount. Values are integers in # the range 0 to 100. A value of zero means no vignette. The default=100 # means full vignette color. # # 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 up defaults inner=50 # inner radius of vignette where not darkened as percent of image dimension outer=150 # outer radius of vignette where darkest color="black" # vignette color amount=100 # vignette amount feather=0 # feathering amount for inner radius; # 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 12 ] then errMsg "--- TOO MANY ARGUMENTS WERE PROVIDED ---" else while [ $# -gt 0 ] do # get parameter values case "$1" in -help|-h) # help information echo "" usage2 exit 0 ;; -i) # get inner shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID INNER SPECIFICATION ---" checkMinus "$1" inner=`expr "$1" : '\([0-9]*\)'` [ "$inner" = "" ] && errMsg "--- INNER=$inner MUST BE A NON-NEGATIVE INTEGER (with no sign) ---" ;; -o) # get outer shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID OUTER SPECIFICATION ---" checkMinus "$1" outer=`expr "$1" : '\([0-9]*\)'` [ "$outer" = "" ] && errMsg "--- OUTER=$outer MUST BE A NON-NEGATIVE INTEGER (with no sign) ---" ;; -f) # get feather shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID FEATHER SPECIFICATION ---" checkMinus "$1" feather=`expr "$1" : '\([0-9]*\)'` [ "$feather" = "" ] && errMsg "--- FEATHER=$feather MUST BE A NON-NEGATIVE INTEGER (with no sign) ---" ;; -c) # get color shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID COLOR SPECIFICATION ---" checkMinus "$1" color=`echo "$1"` ;; -a) # get amount shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID AMOUNT SPECIFICATION ---" checkMinus "$1" amount=`expr "$1" : '\([0-9]*\)'` [ "$amount" = "" ] && errMsg "--- AMOUNT=$amount MUST BE AN INTEGER ---" test1=`echo "$amount < 0" | bc` test2=`echo "$amount > 100" | bc` [ $test1 -eq 1 -o $test2 -eq 1 ] && errMsg "--- AMOUNT=$amount MUST BE AN INTEGER BETWEEN 0 AND 100 ---" ;; -) # STDIN and end of arguments break ;; -*) # any other - argument errMsg "--- UNKNOWN OPTION ---" ;; *) # end of arguments break ;; esac shift # next option done # # get infile and outfile infile="$1" outfile="$2" fi # test that infile provided [ "$infile" = "" ] && errMsg "NO INPUT FILE SPECIFIED" # test that outfile provided [ "$outfile" = "" ] && errMsg "NO OUTPUT FILE SPECIFIED" # setup temp files tmpA1="$dir/vignette_1_$$.mpc" tmpB1="$dir/vignette_1_$$.cache" trap "rm -f $tmpA1 $tmpB1;" 0 trap "rm -f $tmpA1 $tmpB1; exit 1" 1 2 3 15 trap "rm -f $tmpA1 $tmpB1; exit 1" ERR # get im_version im_version=`convert -list configure | \ sed '/^LIB_VERSION_NUMBER */!d; s//,/; s/,/,0/g; s/,0*\([0-9][0-9]\)/\1/g' | head -n 1` # colorspace RGB and sRGB swapped between 6.7.5.5 and 6.7.6.7 # though probably not resolved until the latter # then -colorspace gray changed to linear between 6.7.6.7 and 6.7.8.2 # then -separate converted to linear gray channels between 6.7.6.7 and 6.7.8.2, # though probably not resolved until the latter # so -colorspace HSL/HSB -separate and -colorspace gray became linear # but we need to use -set colorspace RGB before using them at appropriate times # so that results stay as in original script # The following was determined from various version tests using vignette # with IM 6.7.4.10, 6.7.6.10, 6.7.9.1 if [ "$im_version" -lt "06070607" -o "$im_version" -gt "06070707" ]; then setcspace="-set colorspace RGB" else setcspace="" fi # no need for setcspace for grayscale or channels after 6.8.5.4 if [ "$im_version" -gt "06080504" ]; then setcspace="" fi # test input image convert -quiet "$infile" +repage "$tmpA1" || errMsg "--- FILE $infile DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO SIZE ---" # setup vignette ww=`convert $tmpA1 -format "%w" info:` hh=`convert $tmpA1 -format "%h" info:` wwo=`convert xc: -format "%[fx:$outer*$ww/100]" info:` hho=`convert xc: -format "%[fx:$outer*$hh/100]" info:` mwh=`convert xc: -format "%[fx:$outer*min($ww,$hh)/100]" info:` if [ "$inner" = "0" ]; then mlevel="" else inner=$((100-inner)) mlevel="-level 0x$inner%" fi if [ "$amount" = "100" ]; then plevel="" else amount=$((100-amount)) plevel="+level ${amount}x100%" fi #echo "ww=$ww; hh=$hh; wwo=$wwo; hho=$hho; mwh=$mwh; mlevel=$mlevel; plevel=$plevel" # setup feathering if [ "$feather" = "0" ]; then feathering="" else feathering="-blur ${feather}x65000" fi #echo "feathering=$feathering" convert -background $color $tmpA1 \ \( -size ${mwh}x${mwh} radial-gradient: -resize ${wwo}x${hho}! \ -gravity center -crop ${ww}x${hh}+0+0 +repage $mlevel $plevel $feathering \) \ $setcspace -alpha off -compose copy_opacity -composite \ +channel -compose over -flatten "$outfile" exit 0