#!/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 26.84007953662428 57.510116275116985 -gcp 11613.0 0.0 26.83198036701745 57.48202396442066 -gcp 11613.0 11790.0 26.777688860893257 57.48633496703892 -gcp 0.0 11790.0 26.787260271813246 57.51553565026446 Aluksne-1989-1185/Aluksne-1989-1185-119.jpg Aluksne-1989-1185-119.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1050.0 2109.0\n2022.0 10578.0\n10410.0 9597.0\n9429.0 1113.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-119.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-119.vrt Aluksne-1989-1185-119.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-119.cut.vrt Aluksne-1989-1185-119.xyz