#!/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 26.838124656029187 57.50029466655361 -gcp 11394.0 0.0 26.83212229415265 57.47212565257727 -gcp 11394.0 11412.0 26.779767970138728 57.4751186009608 -gcp 0.0 11412.0 26.78589907804788 57.503653777271474 Aluksne-1989-1186/Aluksne-1989-1186-109.jpg Aluksne-1989-1186-109.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1011.0 1743.0\n9384.0 918.0\n10203.0 9381.0\n1827.0 10212.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-109.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-109.vrt Aluksne-1989-1186-109.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-109.cut.vrt Aluksne-1989-1186-109.xyz