#!/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 26.711969375610355 57.61224491613033 -gcp 10626.0 0.0 26.712012290954593 57.58555819183569 -gcp 10626.0 10791.0 26.660706996917728 57.585592698305064 -gcp 0.0 10791.0 26.661136150360107 57.612342612648696 Aluksne-1989-1185/Aluksne-1989-1185-165.jpg Aluksne-1989-1185-165.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "960.0 1269.0\n1179.0 9726.0\n9705.0 9504.0\n9501.0 1050.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-165.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-165.vrt Aluksne-1989-1185-165.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-165.cut.vrt Aluksne-1989-1185-165.xyz