#!/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 26.894108616297046 57.450856506066664 -gcp 11217.0 0.0 26.896065473556522 57.424101912385595 -gcp 11217.0 11256.0 26.845512737559254 57.42232197012106 -gcp 0.0 11256.0 26.84244167449421 57.44986931536655 Aluksne-1989-1186/Aluksne-1989-1186-88.jpg Aluksne-1989-1186-88.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1746.0 1017.0\n10218.0 1647.0\n9573.0 10035.0\n1110.0 9414.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-88.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-88.vrt Aluksne-1989-1186-88.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-88.cut.vrt Aluksne-1989-1186-88.xyz