#!/bin/bash # # Developed by Fred Weinhaus 8/8/2018 .......... 8/8/2018 # # ------------------------------------------------------------------------------ # # 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: zoomrotatetext -t "text" [-w width ] [-f font] [-c color] [-b bgcolor ] # [-r revolutions] [-D direction] [-m mode ] [-p pause] [-F frames] [-d delay] # [infile] outfile # USAGE: zoomrotatetext [-h or -help] # # OPTIONS: # # -t text text string to be used to create the animation; required # argument # -w width width of text in pixels; integer>0; default=400; # output will be square of size determined from the text # diagonal dimension # -f font font to use for the text; font name or path to font file; # default=arial # -c color color of text; any valid IM color is allowed; default=black # -b bgcolor background color for the animation frames; any valid IM color # is allowed; default=white # -r revolutions number of 360 degree revolutions of the text; integer>0; # default=4 # -D direction direction of the revolutions; clockwise or counterclockwise; # default=clockwise # -m mode mode for the zoom; 1 (zoom out once only), 2 (zoom out, # then zoom in, then zoom out again once only), 3 (zoom out, # then zoom in, then repeat continuosly); default=2 # -p pause number of frames to pause between zoom in/out steps with # method 2 or 3; integer>0; default=10 # -F frames number of frames to generate in the animation; integer>0; # default=30 # -d delay animation delay between frames; integer>0; default=10 # # infile is optional and will be tiled (or cropped) to replace the background color # ### # # NAME: ZOOMROTATETEXT # # PURPOSE: Creates a zoomed and rotating text animation. # # DESCRIPTION: ZOOMROTATETEXT creates a zoomed and rotating text animation. The number # of revolutions may be specified as well as the mode for the zoom. # # # OPTIONS: # # -t text ... TEXT string to be used to create the animation. This is a required argument # # -w width ... WIDTH of text in pixels. Values are integers>0. The default=400. The # output will be square of size determined from the text diagonal dimension. # # -f font ... FONT to use for the text. Either the font name or path to font file may # be used. The default=arial. # # -c color ... COLOR of the text. Any valid IM color is allowed. The default=black. # # -b bgcolor ... BGCOLOR is the background color for the animation frames. Any valid # IM color is allowed. The default=white. # # -r revolutions ... REVOLUTIONS is the number of 360 degree revolutions of the text. # Values are integers>0. The default=4. # # -D direction ... DIRECTION of the revolutions. Choices are: clockwise (cw) or # counterclockwise (ccw). The default=clockwise. # # -m mode ... MODE for the zoom. Choices are: 1 (zoom out once only), 2 (zoom out, # then zoom in, then zoom out again once only), 3 (zoom out, then zoom in, then # repeat continuosly). The default=2 # # -p pause ... Pause is the number of frames to pause between zoom in/out steps with # method 2 or 3. Values are integers>0. The default=10. # # -F frames ... FRAMES is the number of frames to generate in the animation. Values are # integers>0. The default=30. # # -d delay ... DELAY is the animation delay between frames. Values are integers>0. The # default=10. # # infile is optional and will be tiled (or cropped) to replace the background color. # # REQUIREMENTS: Imagemagick 6.6.8-10 due to the use of -duplicate. # # 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 text="" width=400 font="arial" bcolor="white" color="black" revolutions=4 direction="clockwise" mode=2 pause=10 frames=30 delay=10 zoomstart=0.01 # 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 24 ] 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 ;; -t) # get text shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID TEXT SPECIFICATION ---" #checkMinus "$1" text="$1" ;; -w) # get width shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID WIDTH SPECIFICATION ---" checkMinus "$1" width=`expr "$1" : '\([0-9]*\)'` [ "$width" = "" ] && errMsg "--- WIDTH=$width MUST BE A NON-NEGATIVE INTEGER (with no sign) ---" test1=`echo "$width == 0" | bc` [ $test1 -eq 1 ] && errMsg "--- WIDTH=$width MUST BE A POSITIVE INTEGER ---" ;; -f) # get font shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID FONT SPECIFICATION ---" checkMinus "$1" font="$1" ;; -c) # get color shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID COLOR SPECIFICATION ---" checkMinus "$1" color="$1" ;; -b) # get bgcolor shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID BGCOLOR SPECIFICATION ---" checkMinus "$1" bgcolor="$1" ;; -r) # get revolutions shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID REVOLUTIONS SPECIFICATION ---" checkMinus "$1" revolutions=`expr "$1" : '\([.0-9]*\)'` [ "$revolutions" = "" ] && errMsg "--- REVOLUTIONS=$revolutions MUST BE A NON-NEGATIVE INTEGER ---" test1=`echo "$revolutions == 0" | bc` [ $test1 -eq 1 ] && errMsg "--- REVOLUTIONS=$revolutions MUST BE A POSITIVE INTEGER ---" ;; -D) # direction shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID DIRECTION SPECIFICATION ---" checkMinus "$1" direction=`echo "$1" | tr "[:upper:]" "[:lower:]"` case "$direction" in clockwise|cw) direction="clockwise" ;; counterclockwise|ccw) direction="counterclockwise" ;; *) errMsg "--- DIRECTION=$direction IS NOT A VALID CHOICE ---" ;; esac ;; -m) # mode shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID MODE SPECIFICATION ---" checkMinus "$1" mode=`echo "$1" | tr "[:upper:]" "[:lower:]"` case "$mode" in 1) ;; 2) ;; 3) ;; *) errMsg "--- MODE=$mode IS NOT A VALID CHOICE ---" ;; esac ;; -p) # get pause shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID PAUSE SPECIFICATION ---" checkMinus "$1" pause=`expr "$1" : '\([0-9]*\)'` [ "$pause" = "" ] && errMsg "--- PAUSE=$pause MUST BE A NON-NEGATIVE INTEGER (with no sign) ---" test1=`echo "$pause == 0" | bc` [ $test1 -eq 1 ] && errMsg "--- PAUSE=$pause MUST BE A POSITIVE INTEGER ---" ;; -F) # get frames shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID FRAMES SPECIFICATION ---" checkMinus "$1" frames=`expr "$1" : '\([0-9]*\)'` [ "$frames" = "" ] && errMsg "--- FRAMES=$frames MUST BE A NON-NEGATIVE INTEGER (with no sign) ---" test1=`echo "$frames == 0" | bc` [ $test1 -eq 1 ] && errMsg "--- FRAMES=$frames MUST BE A POSITIVE INTEGER ---" ;; -d) # get delay shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID DELAY SPECIFICATION ---" checkMinus "$1" delay=`expr "$1" : '\([0-9]*\)'` [ "$delay" = "" ] && errMsg "--- DELAY=$delay MUST BE A NON-NEGATIVE INTEGER (with no sign) ---" test1=`echo "$delay == 0" | bc` [ $test1 -eq 1 ] && errMsg "--- DELAY=$delay MUST BE A POSITIVE INTEGER ---" ;; -) # STDIN and end of arguments break ;; -*) # any other - argument echo "$1" errMsg "--- UNKNOWN OPTION ---" ;; *) # end of arguments break ;; esac shift # next option done # # get infile and outfile if [ $# -eq 2 ]; then infile="$1" outfile="$2" elif [ $# -eq 1 ]; then outfile="$1" else errMsg "--- NO OUTPUT FILE SPECIFIED ---" fi fi # test that outfile provided [ "$outfile" = "" ] && errMsg "NO OUTPUT FILE SPECIFIED" # set up temporaries tmp1A="$dir/zoomrotate_1_$$.mpc" tmp1B="$dir/zoomrotate_1_$$.cache" tmp2A="$dir/zoomrotate_2_$$.mpc" tmp2B="$dir/zoomrotate_2_$$.cache" trap "rm -f $tmp1A $tmp1B $tmp2A $tmp2B;" 0 trap "rm -f $tmp1A $tmp1B $tmp2A $tmp2B; exit 1" 1 2 3 15 #trap "rm -f $tmp1A $tmp1B; exit 1" ERR if [ "$direction" = "clockwise" ]; then sgn="" elif [ "$direction" = "counterclockwise" ]; then sgn="-" fi #echo "gravity1=$gravity1; gravity2=$gravity2; negating=$negating; sgn=$sgn;" if [ "$infile" != "" ]; then bgcolor="none" fi # process animation convert -size ${width}x -background "$bgcolor" -fill "$color" -gravity center -font $font label:"$text" $tmp1A # compute increments WxH=`convert $tmp1A -format "%wx%h" info:` ww=`echo $WxH | cut -dx -f1` hh=`echo $WxH | cut -dx -f2` diag=`convert xc: -format "%[fx:hypot($ww,$hh)]" info:` angle=$((360*revolutions)) ang_inc=`convert xc: -format "%[fx:${sgn}$angle/($frames-1)]" info:` zoom_inc=`convert xc: -format "%[fx:(1-$zoomstart)/$frames)]" info:` echo "ww=$ww; hh=$hh; diag=$diag; angle=$angle; ang_inc=$ang_inc; zoom_inc=$zoom_inc;" if [ "$infile" != "" ]; then convert -size ${diag}x${diag} tile:"$infile" $tmp2A tileproc="$tmp2A +swap -gravity center -compose over -composite" else tileproc="" fi # use subshell processing if [ "$mode" = "1" ]; then ( for ((k=0; k