#!/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 27.01987624168396 57.6754628054174 -gcp 10485.0 0.0 27.020595073699955 57.649609029443674 -gcp 10485.0 13332.0 26.958174705505375 57.64902918862613 -gcp 0.0 13332.0 26.959129571914676 57.6755431213955 Aluksne-1989-1185/Aluksne-1989-1185-92.jpg Aluksne-1989-1185-92.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1050.0 990.0\n1011.0 9495.0\n9441.0 9513.0\n9474.0 1008.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-92.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-92.vrt Aluksne-1989-1185-92.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-92.cut.vrt Aluksne-1989-1185-92.xyz