#!/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 27.021174430847168 57.63276690507401 -gcp 10491.0 0.0 27.021163702011112 57.606532086616156 -gcp 10491.0 10578.0 26.972444057464603 57.60623320160447 -gcp 0.0 10578.0 26.971532106399536 57.632962190566 Aluksne-1989-1185/Aluksne-1989-1185-88.jpg Aluksne-1989-1185-88.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1062.0 1020.0\n1020.0 9516.0\n9447.0 9543.0\n9486.0 1038.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-88.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-88.vrt Aluksne-1989-1185-88.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-88.cut.vrt Aluksne-1989-1185-88.xyz