#!/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 26.71284914016724 57.51535037025269 -gcp 10479.0 0.0 26.712334156036377 57.489076920974924 -gcp 10479.0 10590.0 26.663603782653812 57.48966508132379 -gcp 0.0 10590.0 26.66409730911255 57.51581710343806 Aluksne-1989-1185/Aluksne-1989-1185-173.jpg Aluksne-1989-1185-173.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1002.0 984.0\n927.0 9510.0\n9363.0 9579.0\n9447.0 1050.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-173.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-173.vrt Aluksne-1989-1185-173.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-173.cut.vrt Aluksne-1989-1185-173.xyz