#!/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 26.899132502645315 57.46894148008988 -gcp 10539.0 0.0 26.894705382244233 57.4434916758022 -gcp 10539.0 10581.0 26.847037739946472 57.44540846813996 -gcp 0.0 10581.0 26.850636057762053 57.47124936966139 Aluksne-1989-1186/Aluksne-1989-1186-86.jpg Aluksne-1989-1186-86.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1029.0 1029.0\n9504.0 1062.0\n9474.0 9477.0\n972.0 9444.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-86.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-86.vrt Aluksne-1989-1186-86.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-86.cut.vrt Aluksne-1989-1186-86.xyz