#!/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 26.645546317978777 57.52246191797491 -gcp 11547.0 0.0 26.651874983757757 57.49352325859451 -gcp 11547.0 11466.0 26.598649113973092 57.490196481204656 -gcp 0.0 11466.0 26.5927335083824 57.51942329545964 Aluksne-1989-1185/Aluksne-1989-1185-193.jpg Aluksne-1989-1185-193.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2103.0 921.0\n10452.0 1959.0\n9372.0 10398.0\n1023.0 9342.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-193.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-193.vrt Aluksne-1989-1185-193.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-193.cut.vrt Aluksne-1989-1185-193.xyz