#!/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 26.768383372643886 57.614437537508756 -gcp 11343.0 0.0 26.774378150133586 57.5867161741097 -gcp 11343.0 11466.0 26.721635006516777 57.58216061235245 -gcp 0.0 11466.0 26.714579181378113 57.61153171199003 Aluksne-1989-1185/Aluksne-1989-1185-144.jpg Aluksne-1989-1185-144.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1944.0 1023.0\n1008.0 9504.0\n9399.0 10410.0\n10338.0 1938.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-144.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-144.vrt Aluksne-1989-1185-144.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-144.cut.vrt Aluksne-1989-1185-144.xyz