#!/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 1983.0 1464.0 23.337216666666666 56.5 -gcp 13089.0 1476.0 24.337216666666666 56.5 -gcp 13104.0 11484.0 24.337216666666666 56 -gcp 1953.0 11496.0 23.337216666666666 56 lnb/27352323.jpg 27352323.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1983.0 1464.0\n13089.0 1476.0\n13104.0 11484.0\n1953.0 11496.0" | \
  gdaltransform -tps -output_xy 27352323.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  27352323.vrt 27352323.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES 27352323.cut.vrt 27352323.xyz