#!/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 26.554104716300966 57.45594310893813 -gcp 10506.0 0.0 26.5546143360138 57.429510758750304 -gcp 10506.0 10566.0 26.50482293891907 57.42875132574081 -gcp 0.0 10566.0 26.50372323322296 57.45567181514686 Aluksne-1989-1186/Aluksne-1989-1186-214.jpg Aluksne-1989-1186-214.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1038.0 1101.0\n9531.0 1074.0\n9519.0 9510.0\n1053.0 9525.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-214.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-214.vrt Aluksne-1989-1186-214.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-214.cut.vrt Aluksne-1989-1186-214.xyz