#!/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 26.67688608169556 57.56391619129543 -gcp 11109.0 0.0 26.679933071136478 57.535368433410355 -gcp 11109.0 11217.0 26.627136468887333 57.533876818616754 -gcp 0.0 11217.0 26.62442207336426 57.56182149243776 Aluksne-1989-1185/Aluksne-1989-1185-178.jpg Aluksne-1989-1185-178.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1698.0 1056.0\n1065.0 9561.0\n9483.0 10158.0\n10107.0 1662.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-178.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-178.vrt Aluksne-1989-1185-178.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-178.cut.vrt Aluksne-1989-1185-178.xyz