#!/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 26.92846193512078 57.44314656809376 -gcp 10506.0 0.0 26.926831328204017 57.41753796950566 -gcp 10506.0 10554.0 26.879329819601065 57.41845426401055 -gcp 0.0 10554.0 26.880493722149136 57.443571841587975 Aluksne-1989-1186/Aluksne-1989-1186-76.jpg Aluksne-1989-1186-76.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1062.0 1062.0\n9564.0 1074.0\n9543.0 9504.0\n1026.0 9489.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-76.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-76.vrt Aluksne-1989-1186-76.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-76.cut.vrt Aluksne-1989-1186-76.xyz