#!/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 27.021010015837685 57.654536721013145 -gcp 10485.0 0.0 27.021637646001633 57.628310067059026 -gcp 10485.0 13332.0 26.959291434209327 57.627845501668595 -gcp 0.0 13332.0 26.958915497129713 57.65433911104215 Aluksne-1989-1185/Aluksne-1989-1185-90.jpg Aluksne-1989-1185-90.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1062.0 984.75\n942.0 9483.0\n9372.0 9588.0\n9492.0 1095.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-90.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-90.vrt Aluksne-1989-1185-90.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-90.cut.vrt Aluksne-1989-1185-90.xyz