#!/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 1758.0 2949.0 25 56.666666666666664 -gcp 16221.0 2964.0 25.25 56.666666666666664 -gcp 16176.0 20445.0 25.25 56.5 -gcp 1671.0 20439.0 25 56.5 mapster/O-35-123-A_(YAUNELGAVA)_1939_greif.jpg O-35-123-A_(YAUNELGAVA)_1939_greif.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1758.0 2949.0\n16221.0 2964.0\n16176.0 20445.0\n1671.0 20439.0" | \
  gdaltransform -tps -output_xy O-35-123-A_(YAUNELGAVA)_1939_greif.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  O-35-123-A_(YAUNELGAVA)_1939_greif.vrt O-35-123-A_(YAUNELGAVA)_1939_greif.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES O-35-123-A_(YAUNELGAVA)_1939_greif.cut.vrt O-35-123-A_(YAUNELGAVA)_1939_greif.xyz