#!/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 26.65342211723328 57.540038693456594 -gcp 11382.0 0.0 26.645579338073734 57.511581713183894 -gcp 11382.0 11589.0 26.59224629402161 57.515655764246866 -gcp 0.0 11589.0 26.600282192230228 57.544368658846054 Aluksne-1989-1185/Aluksne-1989-1185-191.jpg Aluksne-1989-1185-191.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "972.0 1962.0\n9363.0 987.0\n10341.0 9486.0\n1944.0 10461.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-191.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-191.vrt Aluksne-1989-1185-191.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-191.cut.vrt Aluksne-1989-1185-191.xyz