source: OpenWorkouts-current/bin/screenshot_map @ 3169fe4

#!/bin/sh
#
# Make a screenshot of a workout map
#

uid=$1
wid=$2
dest=$3
dummy=$4

# make a dummy screenshot image first, that way if chrome fails, we still have an image
cp ${dummy} screenshot.png

# Make the screenshot with chrome headless
`which chrome` --headless --disable-gpu --window-size="1300x436" --screenshot http://localhost:9999/${uid}/${wid}/map --virtual-time-budget=10000

# crop it
# `which convert` screenshot.png -chop 100x0 ${dest}

# resize, 70% of the original image is enough.
# we do this instead of setting a lower resolution/window size on the browser
# because with smaller window size, the resulting images appear corrupted
# randomly (like if the screenshot was taking before the map was finished
# loading tiles)
# `which convert` ${dest} -resize 70% ${dest}

# remove leftover
# rm screenshot.png
mv screenshot.png ${dest}