#!/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 26.64989233016968 57.60560093675145 -gcp 10884.0 0.0 26.648787260055546 57.57773012862826 -gcp 10884.0 10935.0 26.59743905067444 57.57852969209485 -gcp 0.0 10935.0 26.598651409149173 57.60602627977219 Aluksne-1989-1185/Aluksne-1989-1185-185.jpg Aluksne-1989-1185-185.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1074.0 1323.0\n1350.0 9843.0\n9792.0 9552.0\n9512.625 1033.5" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-185.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-185.vrt Aluksne-1989-1185-185.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-185.cut.vrt Aluksne-1989-1185-185.xyz