#!/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 26.86418641308151 57.514721670531 -gcp 10929.0 0.0 26.862361642507924 57.48805912557719 -gcp 10929.0 11088.0 26.811667084693912 57.48867042891787 -gcp 0.0 11088.0 26.81356349385704 57.51627688329386 Aluksne-1989-1185/Aluksne-1989-1185-70.jpg Aluksne-1989-1185-70.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1062.0 1485.0\n1473.0 9978.0\n9897.0 9570.0\n9486.0 1053.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-70.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-70.vrt Aluksne-1989-1185-70.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-70.cut.vrt Aluksne-1989-1185-70.xyz