#!/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 26.86513984368844 57.63240207116121 -gcp 10488.0 0.0 26.865418909356542 57.60635365716954 -gcp 10488.0 10563.0 26.81730386068288 57.60593442648846 -gcp 0.0 10563.0 26.816310844503946 57.63207765203676 Aluksne-1989-1185/Aluksne-1989-1185-81.jpg Aluksne-1989-1185-81.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1056.0 999.0\n1023.0 9513.0\n9453.0 9540.0\n9489.0 1023.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-81.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-81.vrt Aluksne-1989-1185-81.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-81.cut.vrt Aluksne-1989-1185-81.xyz