#!/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 26.930013063922928 57.6449321391027 -gcp 10488.0 0.0 26.929949718475346 57.618990286790726 -gcp 10488.0 10548.0 26.881503862380985 57.619019013382754 -gcp 0.0 10548.0 26.881278556823734 57.64431527628162 Aluksne-1989-1185/Aluksne-1989-1185-22.jpg Aluksne-1989-1185-22.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1056.0 1104.0\n9582.0 1086.0\n9594.0 9510.0\n1062.0 9531.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-22.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-22.vrt Aluksne-1989-1185-22.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-22.cut.vrt Aluksne-1989-1185-22.xyz