#!/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 26.584306955337528 57.46725639961352 -gcp 10551.0 0.0 26.583738327026367 57.44050373180825 -gcp 10551.0 10563.0 26.533484458923343 57.440717368904394 -gcp 0.0 10563.0 26.53408527374268 57.46758527500117 Aluksne-1989-1186/Aluksne-1989-1186-206.jpg Aluksne-1989-1186-206.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1017.0 1035.0\n9465.0 1002.0\n9504.0 9432.0\n996.0 9459.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-206.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-206.vrt Aluksne-1989-1186-206.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-206.cut.vrt Aluksne-1989-1186-206.xyz