#!/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 26.805066256955453 57.618715952581326 -gcp 10485.0 0.0 26.805070930163634 57.592373274485446 -gcp 10485.0 13344.0 26.743339060981363 57.59220216664958 -gcp 0.0 13344.0 26.74290518097111 57.61856502478211 Aluksne-1989-1185/Aluksne-1989-1185-130.jpg Aluksne-1989-1185-130.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1107.0 993.0\n1008.0 9507.0\n9447.0 9600.0\n9552.0 1065.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-130.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-130.vrt Aluksne-1989-1185-130.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-130.cut.vrt Aluksne-1989-1185-130.xyz