#!/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 26.613116460800175 57.454409177750804 -gcp 10506.0 0.0 26.61177535629273 57.42772994435661 -gcp 10506.0 10536.0 26.562117141723636 57.42817177010797 -gcp 0.0 10536.0 26.562964719772342 57.454844981628945 Aluksne-1989-1186/Aluksne-1989-1186-192.jpg Aluksne-1989-1186-192.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1053.0 1005.0\n9534.0 999.0\n9519.0 9429.0\n1038.0 9432.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-192.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-192.vrt Aluksne-1989-1186-192.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-192.cut.vrt Aluksne-1989-1186-192.xyz