#!/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 26.64714574813843 57.53332392658651 -gcp 11376.0 0.0 26.65195226669312 57.50464844194738 -gcp 11376.0 11544.0 26.598157882690433 57.50180674573873 -gcp 0.0 11544.0 26.59348011016846 57.530628457853055 Aluksne-1989-1185/Aluksne-1989-1185-192.jpg Aluksne-1989-1185-192.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2094.0 1029.0\n10485.0 2019.0\n9459.0 10497.0\n1077.0 9492.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-192.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-192.vrt Aluksne-1989-1185-192.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-192.cut.vrt Aluksne-1989-1185-192.xyz