#!/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 0.0 0.0 26.782732957582592 57.18360146723078 -gcp 14340.0 0.0 27.11915217824628 57.18561237799944 -gcp 14340.0 15882.0 27.121020647355525 56.983835261125435 -gcp 0.0 15882.0 26.786542445363335 56.98228229076628 228-Ostraviesi_1924.jpg 228-Ostraviesi_1924.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"1863.0 1351.4991671293724\n1738.5 14494.500832870628\n12447.9375 14588.063645197115\n12525.0 1467.0\" | \
  gdaltransform -tps -output_xy 228-Ostraviesi_1924.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  228-Ostraviesi_1924.vrt 228-Ostraviesi_1924.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES 228-Ostraviesi_1924.cut.vrt 228-Ostraviesi_1924.xyz