#!/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 26.683709621429447 57.61489986927777 -gcp 10512.0 0.0 26.67985796928406 57.58819209156441 -gcp 10512.0 10446.0 26.630548238754276 57.59057853908613 -gcp 0.0 10446.0 26.634378433227543 57.6166237609652 Aluksne-1989-1185/Aluksne-1989-1185-183.jpg Aluksne-1989-1185-183.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1128.0 960.0\n1020.0 9396.0\n9531.0 9495.0\n9645.0 1053.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-183.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-183.vrt Aluksne-1989-1185-183.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-183.cut.vrt Aluksne-1989-1185-183.xyz