#!/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 26.838648583397376 57.618574486064546 -gcp 11505.0 0.0 26.833044842321954 57.58997009682012 -gcp 11505.0 11532.0 26.781122581445338 57.592576467574425 -gcp 0.0 11532.0 26.78529271815552 57.62132433491585 Aluksne-1989-1185/Aluksne-1989-1185-109.jpg Aluksne-1989-1185-109.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1065.0 2046.0\n1974.0 10509.0\n10368.0 9606.0\n9444.0 1104.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-109.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-109.vrt Aluksne-1989-1185-109.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-109.cut.vrt Aluksne-1989-1185-109.xyz