#!/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 26.742091105066585 57.549054305070825 -gcp 10485.0 0.0 26.742022144815323 57.522831611242346 -gcp 10485.0 13344.0 26.679870073654502 57.52270556654936 -gcp 0.0 13344.0 26.679117679595947 57.54900321124291 Aluksne-1989-1185/Aluksne-1989-1185-157.jpg Aluksne-1989-1185-157.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1053.0 1083.0\n1071.0 9543.0\n9585.0 9516.0\n9570.0 1050.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-157.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-157.vrt Aluksne-1989-1185-157.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-157.cut.vrt Aluksne-1989-1185-157.xyz