#!/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 26.676725149154667 57.540608758200825 -gcp 10479.0 0.0 26.676263809204105 57.51397894683613 -gcp 10479.0 10566.0 26.627271682572438 57.51386929196642 -gcp 0.0 10566.0 26.626878976821903 57.54045328688218 Aluksne-1989-1185/Aluksne-1989-1185-176.jpg Aluksne-1989-1185-176.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "999.0 1017.0\n1020.0 9516.0\n9438.0 9507.0\n9438.0 978.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-176.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-176.vrt Aluksne-1989-1185-176.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-176.cut.vrt Aluksne-1989-1185-176.xyz