#!/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 27.024689700902588 57.545625969882266 -gcp 10485.0 0.0 27.023195810272423 57.51897162424747 -gcp 10485.0 13260.0 26.96173116221008 57.520586804493405 -gcp 0.0 13260.0 26.96397743867305 57.54651830340995 Aluksne-1989-1185/Aluksne-1989-1185-98.jpg Aluksne-1989-1185-98.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "990.0 1026.0\n1005.0 9531.0\n9436.03125 9483.0\n9418.6875 991.96875" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-98.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-98.vrt Aluksne-1989-1185-98.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-98.cut.vrt Aluksne-1989-1185-98.xyz