#!/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 26.777581824324926 57.55833160446884 -gcp 11100.0 0.0 26.77359250150827 57.53032479388573 -gcp 11100.0 11298.0 26.7211710222095 57.53239456112336 -gcp 0.0 11298.0 26.72519060227007 57.56046178623028 Aluksne-1989-1185/Aluksne-1989-1185-149.jpg Aluksne-1989-1185-149.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "963.0 1695.0\n1539.0 10194.0\n9966.0 9612.0\n9387.0 1089.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-149.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-149.vrt Aluksne-1989-1185-149.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-149.cut.vrt Aluksne-1989-1185-149.xyz