#!/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 26.899345435796846 57.50187996460223 -gcp 10572.0 0.0 26.898736953735355 57.47586388207378 -gcp 10572.0 10614.0 26.850113868713382 57.476336888686824 -gcp 0.0 10614.0 26.850918531417847 57.5021641227019 Aluksne-1989-1186/Aluksne-1989-1186-83.jpg Aluksne-1989-1186-83.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1035.0 1071.0\n9522.0 963.0\n9600.0 9366.0\n1104.0 9486.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-83.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-83.vrt Aluksne-1989-1186-83.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-83.cut.vrt Aluksne-1989-1186-83.xyz