pieces2one.sh

#!/bin/bash

CONVERT=$(which convert)

if [[ ${#CONVERT} -eq 0 ]]; then
    echo -n "Install ImageMagick first"
    if [[ $(which brew) != "" ]]; then
        echo ": brew install imagemagick"
    elif [[ $(which apt-get) != "" ]]; then
        echo ": sudo apt-get install imagemagick"
    elif [[ $(which yum) != "" ]]; then
        echo ": yum install imagemagick"
    else
        echo "."
    fi
    exit 1
fi

MAPS="`pwd`/maps"

DRY_RUN=""
for arg in "$@"
do
    case "$arg" in
        --dry-run)
            shift
            DRY_RUN="echo"
            echo "#!/bin/bash"
            ;;
    esac
done

if [[ ! -d ${MAPS} ]]; then
    echo "${MAPS} does not exist."
    echo "Run point2pieces.sh first."
    exit 1
fi

PIECES=($(find "${MAPS}" -maxdepth 1 -name "*,*.png"))
if [[ ${#PIECES[@]} -eq 0 ]]; then
    echo "Images not found."
    exit
fi

CROP=""
if [[ ${#1} -gt 0 ]]; then
    CROP=" -crop ${1} "
fi

X=()
Y=()
for (( i = 0; i < ${#PIECES[@]}; i++ )); do
    if [[ -f "${PIECES[$i]}.traffic" ]]; then
        $DRY_RUN $CONVERT "${PIECES[$i]}" "${PIECES[$i]}.traffic"\
                -geometry +0+0 -composite "${PIECES[$i]}"
        $DRY_RUN rm -f "${PIECES[$i]}.traffic"
    fi
    if [[ -f "${PIECES[$i]}.transport" ]]; then
        $DRY_RUN $CONVERT "${PIECES[$i]}" "${PIECES[$i]}.transport"\
                -geometry +0+0 -composite "${PIECES[$i]}"
        $DRY_RUN rm -f "${PIECES[$i]}.transport"
    fi
    N=${PIECES[$i]/${MAPS}\//}
    N=${N%.*}
    X[${#X[@]}]=${N%%,*}
    Y[${#Y[@]}]=${N##*,}
done
X=($(tr ' ' '\n' <<< "${X[@]}" | sort -nu | tr '\n' ' '))
Y=($(tr ' ' '\n' <<< "${Y[@]}" | sort -nru | tr '\n' ' '))

ROWS=()

if [[ ${#X[@]} -le 1 ]]; then
    ALL_PIECES=($(tr ' ' '\n' <<< "${PIECES[@]}" | sort -nru | tr '\n' ' '))
    $DRY_RUN $CONVERT ${ALL_PIECES[@]} -append ${CROP} "${MAPS}/done.png"
else
    for (( i = 0; i < ${#Y[@]}; i++ )); do
        ALL_PIECES=()
        for EX in "${X[@]}"; do
            ALL_PIECES=( "${ALL_PIECES[@]}" "${MAPS}/${EX},${Y[$i]}.png" )
        done
        ROW="${MAPS}/row${i}.png"
        $DRY_RUN $CONVERT ${ALL_PIECES[@]} +append $ROW
        ROWS[${#ROWS[@]}]=$ROW
    done

    $DRY_RUN $CONVERT ${ROWS[@]} -append ${CROP} "${MAPS}/done.png"

    $DRY_RUN rm -f ${ROWS[@]}
fi

$DRY_RUN rm -f ${PIECES[@]}