#!/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 26.865241527557377 57.611107027787064 -gcp 10485.0 0.0 26.86462461948395 57.58519012209564 -gcp 10485.0 13332.0 26.804309188435063 57.584450419192414 -gcp 0.0 13332.0 26.802254602683956 57.61098016176018 Aluksne-1989-1185/Aluksne-1989-1185-79.jpg Aluksne-1989-1185-79.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1092.0 972.0\n1011.0 9492.0\n9441.0 9555.0\n9525.0 1047.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-79.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-79.vrt Aluksne-1989-1185-79.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-79.cut.vrt Aluksne-1989-1185-79.xyz