#!/bin/bash

GDAL_TILE_PROCESSES=16
GDAL_TILE_ZOOMS=8-14
GDAL_SAMPLING_WARP=cubic
GDAL_SAMPLING_TILE=antialias

# Create virtual dataset with coordinates
gdal_translate -of VRT -a_srs EPSG:4326 -outsize 300% 300% -gcp 2283.0 987.0 24.337216666666666 57 -gcp 14073.0 936.0 24.837216666666666 57 -gcp 14190.0 11727.0 24.837216666666666 56.75 -gcp 2340.0 11787.0 24.337216666666666 56.75 bruno/P14_1919.jpg P14_1919.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2283.0 987.0\n14073.0 936.0\n14190.0 11727.0\n2340.0 11787.0" | \
  gdaltransform -tps -output_xy P14_1919.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  P14_1919.vrt P14_1919.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES P14_1919.cut.vrt P14_1919.xyz