use imagemagick to merge all images in a folder to produce a spritesheet

spritemaker

#!/bin/bash

# use imagemagick to merge all images in a folder to produce a spritesheet
# use conver -append for vertical stacking and
# convert +append for horizontal

if [ $# -gt 0 ]
then

    if [ $2 ]
    then
        ext="."$2; # the extension to iterate over for input files
    else
        ext=".png"; # default extension
    fi

    classname=$1"-sprite";

    echo "Generating sprite file...";
    convert *$ext +append ./$classname$ext;
    echo "Sprite complete!"

else

    echo -e "Provide at least 1 argument!\nbuildSprite.sh spriteName input_extension"

fi