#!/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 26.99492727628658 57.365134440920215 -gcp 11571.0 0.0 26.986626635313794 57.33738143216943 -gcp 11571.0 11889.0 26.93403911911556 57.34203862306591 -gcp 0.0 11889.0 26.942414861940765 57.36990192119446 Aluksne-1989-1186/Aluksne-1989-1186-14.jpg Aluksne-1989-1186-14.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1092.0 2298.0\n9423.0 1017.0\n10692.0 9447.0\n2355.0 10713.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-14.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-14.vrt Aluksne-1989-1186-14.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-14.cut.vrt Aluksne-1989-1186-14.xyz