#!/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 1107.0 1140.0 23.837216666666666 56 -gcp 12144.0 1098.0 24.337216666666666 56 -gcp 12225.0 10860.0 24.337216666666666 55.75 -gcp 1095.0 10896.0 23.837216666666666 55.75 lnb/src3/raw/27342243.jpg 27342243.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1107.0 1140.0\n12144.0 1098.0\n12225.0 10860.0\n1095.0 10896.0" | \
  gdaltransform -tps -output_xy 27342243.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  27342243.vrt 27342243.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES 27342243.cut.vrt 27342243.xyz