#!/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 26.989000116569432 57.34643275066608 -gcp 10611.0 0.0 26.987275155501116 57.32042146203935 -gcp 10611.0 10710.0 26.939956092736743 57.321015760385635 -gcp 0.0 10710.0 26.94066717879743 57.34634369414831 Aluksne-1989-1186/Aluksne-1989-1186-13.jpg Aluksne-1989-1186-13.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1113.0 1131.0\n9543.0 1023.0\n9630.0 9555.0\n1188.0 9645.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-13.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-13.vrt Aluksne-1989-1186-13.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-13.cut.vrt Aluksne-1989-1186-13.xyz