Prepare and resize images for Appcelerator using imagemagick

prepare_images_for_appcelerator.sh

#!/usr/bin/env bash

origin_raw_folder="raw_images"

rm -rf images
mkdir -p images/iphone
mkdir -p images/android/res-hdpi
mkdir -p images/android/res-hdpi
mkdir -p images/android/res-xhdpi
mkdir -p images/android/res-xxhdpi


resize_image() {
  file=$1
  folder=$2
  suffix=$3
  percent=$4

  pathname=$(dirname "$file")
  filename=$(basename "$file")
  extension="${filename##*.}"
  filename="${filename%.*}"

  destination="${pathname/$origin_raw_folder/$folder}"
  echo "Resizing $file by $percent to $destination/$filename$suffix.$extension"
  convert $file -filter lanczos -unsharp 1.5x1+0.7+0.02   -resize $percent "$destination/$filename$suffix.$extension"
}

move_image() {
  file=$1
  folder=$2
  suffix=$3

  pathname=$(dirname "$file")
  filename=$(basename "$file")
  extension="${filename##*.}"
  filename="${filename%.*}"

  destination="${pathname/$origin_raw_folder/$folder}"
  echo "Copying $file to $destination/$filename$suffix.$extension"
  cp "$file" "$destination/$filename$suffix.$extension"
}

for file in `find $origin_raw_folder -type f`; do
  move_image $file "images/iphone" "@3x"
  move_image $file "images/android/res-xxhdpi"
  resize_image $file "images/iphone" "@2x" "66.66666666666667%"
  resize_image $file "images/android/res-xhdpi" "" "66.66666666666667%"
  resize_image $file "images/android/res-hdpi" "" "50%"
  resize_image $file "images" "" "33.33333333333333%"
done