#!/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 26.902706623077393 57.37481765127888 -gcp 11388.0 0.0 26.8960976600647 57.34776003077369 -gcp 11388.0 11190.0 26.8462085723877 57.35118673507237 -gcp 0.0 11190.0 26.852731704711918 57.37846161417456 Aluksne-1989-1186/Aluksne-1989-1186-53.jpg Aluksne-1989-1186-53.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "867.0 1968.0\n1902.0 10344.0\n10317.0 9321.0\n9340.3125 927.5625" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-53.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-53.vrt Aluksne-1989-1186-53.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-53.cut.vrt Aluksne-1989-1186-53.xyz