#!/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 26.796310055372146 57.685453996277126 -gcp 11376.0 0.0 26.808225561355393 57.657765016306946 -gcp 11376.0 11577.0 26.755877776559576 57.65146847803469 -gcp 0.0 11577.0 26.744438140859444 57.6790128155692 Aluksne-1989-1185/Aluksne-1989-1185-136.jpg Aluksne-1989-1185-136.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2028.0 1113.0\n1092.0 9573.0\n9480.0 10485.0\n10410.0 2001.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-136.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-136.vrt Aluksne-1989-1185-136.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-136.cut.vrt Aluksne-1989-1185-136.xyz