#!/bin/bash
#  __                                                   __        __
# |__|.--------.---.-.-----.-----.--------.---.-.-----.|__|.----.|  |--.
# |  ||        |  _  |  _  |  -__|        |  _  |  _  ||  ||  __||    <
# |__||__|__|__|___._|___  |_____|__|__|__|___._|___  ||__||____||__|__|
#                    |_____|                    |_____| machts möglich
# http://www.forkable.eu/generators/wtf/i/clp_0_04.sh 

# EXECUTE LIKE THIS:
# clp-0.4.sh [FILENAME]... [CYCLES]...

# GENERATES RANDOM OUTPUT
# SECTOR:{-20}{-20}{120}{120}
# SECTOR:{10}{10}{90}{90}
# BORDER:1pt

# SUITABLE FOR FOLLOWING GRIDS:,9,81

FILE=$1
DAY=$2
		ORIGINAL=${FILE##*/}
		NAME=${ORIGINAL%.*}
		TMPDIR=tmp
		PFADNAME=${FILE%.*}
		SOURCE=tmp/$NAME.pdf
		convert -resize 100 $FILE $SOURCE 
		
	  while [ $DAY -gt 0 ]
	  do

		COUNT=`echo 000$DAY |\
			rev |\
			cut -c 1-4 |\
			rev`

		RESULT=$TMPDIR/$NAME-$COUNT.pdf

		SIZE=`expr $DAY + 3`

		convert $SOURCE -colorspace Gray -negate \
			$TMPDIR/$NAME.tmp.png

		composite -compose CopyOpacity \
			$TMPDIR/$NAME.tmp.png \
			$SOURCE tmp/matte.png

		convert $TMPDIR/matte.png -ordered-dither 4x4 \
			-resize 99 +antialias \
			$TMPDIR/$NAME.gif

		convert $TMPDIR/$NAME.gif -background white \
			-resize 100 +antialias \
			-flatten +matte $TMPDIR/dither.gif
		
		convert -monochrome $TMPDIR/dither.gif $TMPDIR/mono.gif

		autotrace  -color-count=2 \
			  -corner-threshold 100 \
			  -corner-always-threshold 100 \
			  -error-threshold 100 \
			  -output-file=$RESULT \
			  $TMPDIR/mono.gif

		convert -resize $SIZE \
			$RESULT \
			$TMPDIR/$NAME.tmp.png 
		convert -resize 100 \
			$TMPDIR/$NAME.tmp.png \
			$SOURCE 

		DAY=`expr $DAY - 1`

	  done

	rm $TMPDIR/*.gif $TMPDIR/*.png $SOURCE

exit 0;