#!/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 26.803411245346073 57.66190406607867 -gcp 10485.0 0.0 26.807305812835697 57.63547779539142 -gcp 10485.0 10614.0 26.758575439453125 57.6338581803751 -gcp 0.0 10614.0 26.754659414291382 57.6592582872553 Aluksne-1989-1185/Aluksne-1989-1185-134.jpg Aluksne-1989-1185-134.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1110.0 1047.0\n1038.0 9561.0\n9474.0 9633.0\n9555.0 1089.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-134.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-134.vrt Aluksne-1989-1185-134.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-134.cut.vrt Aluksne-1989-1185-134.xyz