#!/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 27.02182029895172 57.51322682041899 -gcp 10485.0 0.0 27.019624114036564 57.48666940276694 -gcp 10485.0 10578.0 26.970728433447167 57.487991688536 -gcp 0.0 10578.0 26.97263916142933 57.514159415697236 Aluksne-1989-1185/Aluksne-1989-1185-101.jpg Aluksne-1989-1185-101.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1011.0 1032.0\n939.0 9546.0\n9366.0 9603.0\n9441.0 1083.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-101.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-101.vrt Aluksne-1989-1185-101.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-101.cut.vrt Aluksne-1989-1185-101.xyz