#!/bin/bash

# takes src.png (assume 1024x1024) and creates the icons required for an iMessage sticker pack
# run on mac: sh build_icons.sh src.png


convert $1 -resize 1024x768^ -background white -gravity center  -extent 1024x768 messages-app-store-1024x768.png # aspect ratio 1.333
convert $1 -resize 96x72^    -background white -gravity center  -extent 96x72    messages-32x24@3x.png           # aspect ratio 1.333
convert $1 -resize 64x48^    -background white -gravity center  -extent 64x48    messages-32x24@2x.png           # aspect ratio 1.333
convert $1 -resize 81x60^    -background white -gravity center  -extent 81x60    messages-27x20@3x.png           # aspect ratio 1.353
convert $1 -resize 54x40^    -background white -gravity center  -extent 54x40    messages-27x20@2x.png           # aspect ratio 1.350
convert $1 -resize 148x110^  -background white -gravity center  -extent 148x110  messages-ipad-pro-74x55@2x.png  # aspect ratio 1.345
convert $1 -resize 134x100^  -background white -gravity center  -extent 134x100  messages-ipad-67x50@2x.png      # aspect ratio 1.340
convert $1 -resize 58x58^    -background white -gravity center  -extent 58x58    ipad-settings-29x29@2x.png      # aspect ratio 1.000
convert $1 -resize 180x135^  -background white -gravity center  -extent 180x135  messages-iphone-60x45@3x.png    # aspect ratio 1.333
convert $1 -resize 120x90^   -background white -gravity center  -extent 120x90   messages-iphone-60x45@2x.png    # aspect ratio 1.333
convert $1 -resize 87x87^    -background white -gravity center  -extent 87x87    iphone-settings-29x29@3x.png    # aspect ratio 1.000
convert $1 -resize 58x58^    -background white -gravity center  -extent 58x58    iphone-settings-29x29@2x.png    # aspect ratio 1.000