#!/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 26.80437684059143 57.586633628078964 -gcp 10488.0 0.0 26.803615093231205 57.56044030639343 -gcp 10488.0 10587.0 26.754895448684696 57.56071079278541 -gcp 0.0 10587.0 26.755603551864628 57.586886667280815 Aluksne-1989-1185/Aluksne-1989-1185-127.jpg Aluksne-1989-1185-127.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1038.0 1026.0\n996.0 9552.0\n9441.0 9579.0\n9477.0 1044.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-127.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-127.vrt Aluksne-1989-1185-127.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-127.cut.vrt Aluksne-1989-1185-127.xyz