#!/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 26.679654570190905 57.497417169970994 -gcp 10842.0 0.0 26.676383608377336 57.470000451626625 -gcp 10842.0 11082.0 26.6248975075535 57.47146915550334 -gcp 0.0 11082.0 26.62740672200684 57.499122269492624 Aluksne-1989-1186/Aluksne-1989-1186-187.jpg Aluksne-1989-1186-187.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1062.0 1468.5\n9459.75 1036.5\n9882.0 9543.0\n1482.0 9966.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-187.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-187.vrt Aluksne-1989-1186-187.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-187.cut.vrt Aluksne-1989-1186-187.xyz