Create iOS icons from source image.

create_ios__icons.sh

#!/usr/bin/env bash

#uses clpargs
#https://github.com/samisalkosuo/clpargs
source $GITDIR/clpargs/clpargs.bash

clpargs_program_description "Create iOS app icons from original 1024x1024 icon."
#iOS icon sizes
#https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/MobileHIG/IconMatrix.html


clpargs_define IMAGE "FILENAME" "Image file. ASSUMPTION: given image is 1024x1024" true

 
clpargs_parse "$@" 


resize()
{
  filename=$(basename "$1")
  filename="${filename%.*}"

  TARGET=$filename"_$2.png"

  convert $1 -resize $2 $TARGET
}

cp $IMAGE iTunesArtwork

resize $IMAGE 180x180
resize $IMAGE 120x120
resize $IMAGE 152x152
resize $IMAGE 76x76
resize $IMAGE 40x40
resize $IMAGE 100x100
resize $IMAGE 167x167
resize $IMAGE 80x80
resize $IMAGE 60x60
resize $IMAGE 72x72
resize $IMAGE 144x144
resize $IMAGE 87x87
resize $IMAGE 57x57
resize $IMAGE 114x114
resize $IMAGE 58x58
resize $IMAGE 29x29
resize $IMAGE 60x60
resize $IMAGE 66x66
resize $IMAGE 44x44
resize $IMAGE 22x22
resize $IMAGE 75x75
resize $IMAGE 50x50
resize $IMAGE 25x25