#!/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 27.02120114903146 57.46959880301035 -gcp 10506.0 0.0 27.02362197301079 57.44312634747551 -gcp 10506.0 10614.0 26.974082080426165 57.442102621217906 -gcp 0.0 10614.0 26.972101138725282 57.46868470456895 Aluksne-1989-1186/Aluksne-1989-1186-35.jpg Aluksne-1989-1186-35.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1035.0 1044.0\n9450.0 999.0\n9480.0 9498.0\n1053.0 9543.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-35.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-35.vrt Aluksne-1989-1186-35.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-35.cut.vrt Aluksne-1989-1186-35.xyz