#!/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 26.525461428044306 57.475267032069596 -gcp 11583.0 0.0 26.51881925630453 57.44572434868226 -gcp 11583.0 11508.0 26.464722357485112 57.44952321381921 -gcp 0.0 11508.0 26.47185805568362 57.478990972802144 Aluksne-1989-1186/Aluksne-1989-1186-227.jpg Aluksne-1989-1186-227.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1080.0 1860.0\n9435.0 807.0\n10509.0 9213.0\n2160.0 10311.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-227.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-227.vrt Aluksne-1989-1186-227.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-227.cut.vrt Aluksne-1989-1186-227.xyz