#!/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 26.958110332489014 57.54914714572039 -gcp 10509.0 0.0 26.958614587783817 57.52299021411306 -gcp 10509.0 10506.0 26.908500194549564 57.52334739238927 -gcp 0.0 10506.0 26.91034555435181 57.54953285166264 Aluksne-1989-1185/Aluksne-1989-1185-64.jpg Aluksne-1989-1185-64.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "960.0 1017.0\n1031.25 9456.0\n9516.0 9363.0\n9447.0 924.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-64.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-64.vrt Aluksne-1989-1185-64.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-64.cut.vrt Aluksne-1989-1185-64.xyz