#!/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 26.86566197453566 57.36565780806585 -gcp 10506.0 0.0 26.867128321861 57.34001162659094 -gcp 10506.0 10602.0 26.8194362156369 57.33911869812672 -gcp 0.0 10602.0 26.818189809450683 57.36528860387217 Aluksne-1989-1186/Aluksne-1989-1186-98.jpg Aluksne-1989-1186-98.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1140.0 1020.0\n9549.0 1047.0\n9495.0 9558.0\n1092.0 9507.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-98.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-98.vrt Aluksne-1989-1186-98.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-98.cut.vrt Aluksne-1989-1186-98.xyz