#!/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 26.86596595383664 57.62136869808489 -gcp 10608.0 0.0 26.865322300827746 57.59499894746766 -gcp 10608.0 10719.0 26.816111913892843 57.59499439335376 -gcp 0.0 10719.0 26.816327894133302 57.62170574049338 Aluksne-1989-1185/Aluksne-1989-1185-80.jpg Aluksne-1989-1185-80.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1074.0 1161.0\n1173.0 9657.0\n9606.0 9561.0\n9501.0 1038.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-80.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-80.vrt Aluksne-1989-1185-80.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-80.cut.vrt Aluksne-1989-1185-80.xyz