#!/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 26.95805668830872 57.570740390692116 -gcp 10485.0 0.0 26.957498788833618 57.545019260779206 -gcp 10485.0 13266.0 26.896011829376224 57.545111380468065 -gcp 0.0 13266.0 26.89687013626099 57.57114312808353 Aluksne-1989-1185/Aluksne-1989-1185-66.jpg Aluksne-1989-1185-66.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1002.0 990.0\n987.0 9432.0\n9477.0 9423.0\n9480.0 990.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-66.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-66.vrt Aluksne-1989-1185-66.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-66.cut.vrt Aluksne-1989-1185-66.xyz