#!/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 26.776093351943757 57.548318507825726 -gcp 10821.0 0.0 26.773604706504297 57.520852638742724 -gcp 10821.0 10962.0 26.72287662212257 57.52209292818856 -gcp 0.0 10962.0 26.725007526218274 57.54930827464483 Aluksne-1989-1185/Aluksne-1989-1185-150.jpg Aluksne-1989-1185-150.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1050.0 1323.0\n1296.0 9864.0\n9735.0 9600.0\n9492.0 1053.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-150.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-150.vrt Aluksne-1989-1185-150.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-150.cut.vrt Aluksne-1989-1185-150.xyz