#!/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 26.863198244801634 57.68624601567702 -gcp 10485.0 0.0 26.865527949769618 57.660630864012674 -gcp 10485.0 10614.0 26.817417766465116 57.65893439327112 -gcp 0.0 10614.0 26.814576571002725 57.6850399918282 Aluksne-1989-1185/Aluksne-1989-1185-86.jpg Aluksne-1989-1185-86.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1050.0 1065.0\n1023.0 9585.0\n9462.0 9603.0\n9483.0 1071.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-86.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-86.vrt Aluksne-1989-1185-86.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-86.cut.vrt Aluksne-1989-1185-86.xyz