#!/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 26.812075726009436 57.628550117121044 -gcp 11751.0 0.0 26.80449711627425 57.59945256714635 -gcp 11751.0 12048.0 26.749051985943314 57.603753579051016 -gcp 0.0 12048.0 26.757297190204024 57.63298268048582 Aluksne-1989-1185/Aluksne-1989-1185-131.jpg Aluksne-1989-1185-131.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1245.0 2478.0\n2565.0 10902.0\n10899.0 9579.0\n9582.0 1134.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-131.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-131.vrt Aluksne-1989-1185-131.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-131.cut.vrt Aluksne-1989-1185-131.xyz