#!/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 26.742442287822467 57.51690296764457 -gcp 10485.0 0.0 26.7415493581093 57.490649797164025 -gcp 10485.0 10566.0 26.692761428524555 57.491022522726745 -gcp 0.0 10566.0 26.6925390194281 57.516973144325554 Aluksne-1989-1185/Aluksne-1989-1185-154.jpg Aluksne-1989-1185-154.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1116.0 1089.0\n1023.0 9537.0\n9570.0 9609.0\n9639.0 1152.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-154.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-154.vrt Aluksne-1989-1185-154.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-154.cut.vrt Aluksne-1989-1185-154.xyz