#!/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 26.771385877866443 57.62225713884793 -gcp 10578.0 0.0 26.771374603522894 57.595744279614216 -gcp 10578.0 10707.0 26.72111471659811 57.59541877529105 -gcp 0.0 10707.0 26.721657377314507 57.62253237997823 Aluksne-1989-1185/Aluksne-1989-1185-143.jpg Aluksne-1989-1185-143.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1110.0 999.0\n969.0 9537.0\n9417.0 9660.0\n9555.0 1113.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-143.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-143.vrt Aluksne-1989-1185-143.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-143.cut.vrt Aluksne-1989-1185-143.xyz