#!/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 26.89990897750855 57.649377926875374 -gcp 10593.0 0.0 26.89913113689423 57.62285551184676 -gcp 10593.0 10653.0 26.84966604137421 57.62362816598134 -gcp 0.0 10653.0 26.850749653816226 57.64958748997503 Aluksne-1989-1185/Aluksne-1989-1185-14.jpg Aluksne-1989-1185-14.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "996.0 1098.0\n9489.0 1032.0\n9531.0 9459.0\n1044.0 9522.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-14.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-14.vrt Aluksne-1989-1185-14.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-14.cut.vrt Aluksne-1989-1185-14.xyz