#!/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 26.772858178371678 57.59100739670509 -gcp 10503.0 0.0 26.773492609248112 57.564475928911456 -gcp 10503.0 10614.0 26.724824814830228 57.564022497743174 -gcp 0.0 10614.0 26.72332055166313 57.590263450762244 Aluksne-1989-1185/Aluksne-1989-1185-146.jpg Aluksne-1989-1185-146.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1026.0 966.0\n936.0 9489.0\n9375.0 9564.0\n9456.0 1023.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-146.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-146.vrt Aluksne-1989-1185-146.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-146.cut.vrt Aluksne-1989-1185-146.xyz