#!/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 26.67740364646912 57.508330587697024 -gcp 10506.0 0.0 26.677489477157597 57.481842232344896 -gcp 10506.0 10620.0 26.62787675857543 57.481701047317834 -gcp 0.0 10620.0 26.627874177932743 57.507984759658505 Aluksne-1989-1186/Aluksne-1989-1186-188.jpg Aluksne-1989-1186-188.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1094.25 1039.125\n9508.5 1032.75\n9477.0 9525.0\n1077.0 9519.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-188.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-188.vrt Aluksne-1989-1186-188.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-188.cut.vrt Aluksne-1989-1186-188.xyz