#!/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 26.801710421492444 57.52385925817584 -gcp 10485.0 0.0 26.802566089397367 57.49729566641083 -gcp 10485.0 13326.0 26.741457581520084 57.496892405200995 -gcp 0.0 13326.0 26.74024451295423 57.52303944507788 Aluksne-1989-1185/Aluksne-1989-1185-121.jpg Aluksne-1989-1185-121.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1083.0 1044.0\n1026.0 9576.0\n9465.0 9621.0\n9525.0 1074.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-121.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-121.vrt Aluksne-1989-1185-121.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-121.cut.vrt Aluksne-1989-1185-121.xyz