#!/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 26.744338274002065 57.39941027262632 -gcp 11232.0 0.0 26.739960908889767 57.37157829050251 -gcp 11232.0 11289.0 26.687903871536257 57.373298416378965 -gcp 0.0 11289.0 26.690876483917247 57.401392915544555 Aluksne-1989-1186/Aluksne-1989-1186-150.jpg Aluksne-1989-1186-150.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1161.0 1677.0\n9630.0 879.0\n10410.0 9279.0\n1929.0 10074.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-150.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-150.vrt Aluksne-1989-1186-150.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-150.cut.vrt Aluksne-1989-1186-150.xyz