emilio-rst · July 28, 2014 22:05
diff --git a/README.md b/README.md
diff --git a/mkatlas b/mkatlas
 #!/usr/bin/env bash

 # Horizontal cut
 atlas_cut_horizontal()
 {
 	echo $(( X+$1 )) $Y $W $2 > $NODE/child0/rect
 	echo $X $(( Y+$2 )) $NW $H > $NODE/child1/rect
 }

 # Vertical cut
 atlas_cut_vertical()
 {
 	echo $X $(( Y+$2 )) $1 $H > $NODE/child0/rect
 	echo $(( X+$1 )) $Y $W $NH > $NODE/child1/rect
 }

 # Insert image, packing algorithm from
 # http://www.blackpawn.com/texts/lightmaps/default.html
 #
 # @param 1 - image width
 # @param 2 - image height
 # @param 3 - image file
 atlas_insert()
 {
 	if [ -d "$NODE/child0" ]
 	then
 		local N=$NODE

 		NODE=$N/child0
 		atlas_insert $1 $2 $3 && return 0

 		NODE=$N/child1
 		atlas_insert $1 $2 $3 && return 0

 		return 1
 	fi

 	[ -f $NODE/rect ] || return 1

 	local X Y NW NH
 	read X Y NW NH < $NODE/rect

 	if (( $1 > NW )) || (( $2 > NH ))
 	then
 		return 1
 	fi

 	local W=$(( NW-$1 ))
 	local H=$(( NH-$2 ))

 	mkdir $NODE/child0 $NODE/child1

 	if (( H > W ))
 	then
 		if (( PREFER_SMALLER ))
 		then
 			atlas_cut_vertical $1 $2
 		else
 			atlas_cut_horizontal $1 $2
 		fi
 	else
 		if (( PREFER_SMALLER ))
 		then
 			atlas_cut_horizontal $1 $2
 		else
 			atlas_cut_vertical $1 $2
 		fi
 	fi

 	echo \
 		$(( X+BORDER )) \
 		$(( Y+BORDER )) \
 		$(( $1-BORDER*2 )) \
 		$(( $2-BORDER*2 )) \
 		$3 > $NODE/image

 	return 0
 }

 # Create texture atlas from a listing in the format "width height filename"
 atlas_from_list()
 {
 	local CACHE
 	CACHE=`mktemp -d ${0##*/}.XXXXXXXXXX` || return 1

 	local WIDTH=${WIDTH:-2048}
 	local HEIGHT=${HEIGHT:-2048}
 	echo 0 0 $WIDTH $HEIGHT > $CACHE/rect

 	# sort files and insert them into the atlas
 	local MAX W H FILE
 	while read W H FILE
 	do
 		[ "$FILE" ] || continue

 		if (( W > H ))
 		then
 			MAX=$W
 		else
 			MAX=$H
 		fi

 		printf '%08d %d %d %s\n' $MAX $W $H $FILE
 	done | sort -r | while read MAX W H FILE
 	do
 		local NODE=$CACHE
 		atlas_insert $W $H $FILE || {
 			echo 'error: canvas too small' >&2
 			break
 		}
 	done

 	# print JSON and build arguments for convert
 	echo "var atlas={"

 	find $CACHE -type f -name image | while read
 	do
 		local X Y W H FILE
 		read X Y W H FILE < $REPLY

 		echo "$FILE -geometry +$X+$Y -composite" >> $CACHE/args

 		local NAME=${FILE##*/}
 		echo "${NAME%.*}:{x:$X,y:$Y,w:$W,h:$H},"
 	done

 	echo "};"

 	# compose images into atlas
 	convert -size "${WIDTH}x${HEIGHT}" xc:transparent \
 		`< $CACHE/args` \
 		-strip -trim -bordercolor none -border $BORDER \
 		"${ATLAS:-atlas.png}"

 	rm -rf $CACHE
 }

 # Create texture atlas
 #
 # @param ... - image files
 atlas_from_files()
 {
 	local TRIMMED
 	TRIMMED=`mktemp -d ${0##*/}.XXXXXXXXXX` || return 1

 	# trim input files first
 	local F
 	for F in "$@"
 	do
 		convert "$F" \
 			-strip \
 			-trim \
 			-bordercolor none -border $BORDER \
 			"$TRIMMED/${F##*/}"
 	done

 	identify -format '%w %h %d/%f\n' "$TRIMMED/*" | atlas_from_list
 	rm -rf $TRIMMED
 }

 readonly BORDER=${BORDER:-0}

 [ "$0" == "$BASH_SOURCE" ] && atlas_from_files "$@"
diff --git a/patchatlas b/patchatlas
 #!/usr/bin/env bash

 # Patch given JavaScript files with JSON read from stdin
 #
 # @param ... - JavaScript files to patch
 atlas_patch()
 {
 	(( $# < 1 )) && {
 		echo "usage: ${0##*/} FILE..."
 		return 1
 	}

 	while read
 	do
 		case $REPLY in
 			*:{*)
 				;;
 			*)
 				continue
 				;;
 		esac

 		local NAME=${REPLY%%:\{*}

 		[ "$NAME" ] || continue

 		local FRAME=${REPLY#*\{}
 		local PATCH="s^{/\*${NAME}\*/[\"xywh:0-9,]*}^{/*${NAME}*/${FRAME%,}^g"
 		local TMP=".${0##*/}-$$.tmp"
 		local SRC
 		for SRC in "$@"
 		do
 			sed -e "$PATCH" < $SRC > $TMP && mv $TMP $SRC
 		done
 	done
 }

 [ "$0" == "$BASH_SOURCE" ] && atlas_patch "$@"
	#!/usr/bin/env bash

	# Horizontal cut
	atlas_cut_horizontal()
	{
	echo $(( X+$1 )) $Y $W $2 > $NODE/child0/rect
	echo $X $(( Y+$2 )) $NW $H > $NODE/child1/rect
	}

	# Vertical cut
	atlas_cut_vertical()
	{
	echo $X $(( Y+$2 )) $1 $H > $NODE/child0/rect
	echo $(( X+$1 )) $Y $W $NH > $NODE/child1/rect
	}

	# Insert image, packing algorithm from
	# http://www.blackpawn.com/texts/lightmaps/default.html
	#
	# @param 1 - image width
	# @param 2 - image height
	# @param 3 - image file
	atlas_insert()
	{
	if [ -d "$NODE/child0" ]
	then
	local N=$NODE

	NODE=$N/child0
	atlas_insert $1 $2 $3 && return 0

	NODE=$N/child1
	atlas_insert $1 $2 $3 && return 0

	return 1
	fi

	[ -f $NODE/rect ] \|\| return 1

	local X Y NW NH
	read X Y NW NH < $NODE/rect

	if (( $1 > NW )) \|\| (( $2 > NH ))
	then
	return 1
	fi

	local W=$(( NW-$1 ))
	local H=$(( NH-$2 ))

	mkdir $NODE/child0 $NODE/child1

	if (( H > W ))
	then
	if (( PREFER_SMALLER ))
	then
	atlas_cut_vertical $1 $2
	else
	atlas_cut_horizontal $1 $2
	fi
	else
	if (( PREFER_SMALLER ))
	then
	atlas_cut_horizontal $1 $2
	else
	atlas_cut_vertical $1 $2
	fi
	fi

	echo \
	$(( X+BORDER )) \
	$(( Y+BORDER )) \
	$(( $1-BORDER*2 )) \
	$(( $2-BORDER*2 )) \
	$3 > $NODE/image

	return 0
	}

	# Create texture atlas from a listing in the format "width height filename"
	atlas_from_list()
	{
	local CACHE
	CACHE=`mktemp -d ${0##*/}.XXXXXXXXXX` \|\| return 1

	local WIDTH=${WIDTH:-2048}
	local HEIGHT=${HEIGHT:-2048}
	echo 0 0 $WIDTH $HEIGHT > $CACHE/rect

	# sort files and insert them into the atlas
	local MAX W H FILE
	while read W H FILE
	do
	[ "$FILE" ] \|\| continue

	if (( W > H ))
	then
	MAX=$W
	else
	MAX=$H
	fi

	printf '%08d %d %d %s\n' $MAX $W $H $FILE
	done \| sort -r \| while read MAX W H FILE
	do
	local NODE=$CACHE
	atlas_insert $W $H $FILE \|\| {
	echo 'error: canvas too small' >&2
	break
	}
	done

	# print JSON and build arguments for convert
	echo "var atlas={"

	find $CACHE -type f -name image \| while read
	do
	local X Y W H FILE
	read X Y W H FILE < $REPLY

	echo "$FILE -geometry +$X+$Y -composite" >> $CACHE/args

	local NAME=${FILE##*/}
	echo "${NAME%.*}:{x:$X,y:$Y,w:$W,h:$H},"
	done

	echo "};"

	# compose images into atlas
	convert -size "${WIDTH}x${HEIGHT}" xc:transparent \
	`< $CACHE/args` \
	-strip -trim -bordercolor none -border $BORDER \
	"${ATLAS:-atlas.png}"

	rm -rf $CACHE
	}

	# Create texture atlas
	#
	# @param ... - image files
	atlas_from_files()
	{
	local TRIMMED
	TRIMMED=`mktemp -d ${0##*/}.XXXXXXXXXX` \|\| return 1

	# trim input files first
	local F
	for F in "$@"
	do
	convert "$F" \
	-strip \
	-trim \
	-bordercolor none -border $BORDER \
	"$TRIMMED/${F##*/}"
	done

	identify -format '%w %h %d/%f\n' "$TRIMMED/*" \| atlas_from_list
	rm -rf $TRIMMED
	}

	readonly BORDER=${BORDER:-0}

	[ "$0" == "$BASH_SOURCE" ] && atlas_from_files "$@"
	#!/usr/bin/env bash

	# Patch given JavaScript files with JSON read from stdin
	#
	# @param ... - JavaScript files to patch
	atlas_patch()
	{
	(( $# < 1 )) && {
	echo "usage: ${0##*/} FILE..."
	return 1
	}

	while read
	do
	case $REPLY in
	:{)
	;;
	*)
	continue
	;;
	esac

	local NAME=${REPLY%%:\{*}

	[ "$NAME" ] \|\| continue

	local FRAME=${REPLY#*\{}
	local PATCH="s^{/\${NAME}\/[\"xywh:0-9,]}^{/${NAME}*/${FRAME%,}^g"
	local TMP=".${0##*/}-$$.tmp"
	local SRC
	for SRC in "$@"
	do
	sed -e "$PATCH" < $SRC > $TMP && mv $TMP $SRC
	done
	done
	}

	[ "$0" == "$BASH_SOURCE" ] && atlas_patch "$@"