#!/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 21.448794007301334 56.682515996605645 -gcp 10512.0 0.0 21.449148058891296 56.65540971899388 -gcp 10512.0 12207.0 21.392285227775574 56.654949724058014 -gcp 0.0 12207.0 21.391652226448066 56.68200034255155 Aizpute-1988-991/Aizpute-1988-991-115.jpg Aizpute-1988-991-115.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "609.0 908.25\n10458.0 900.0\n10473.0 10785.0\n618.0 10809.0" | \
  gdaltransform -tps -output_xy Aizpute-1988-991-115.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aizpute-1988-991-115.vrt Aizpute-1988-991-115.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aizpute-1988-991-115.cut.vrt Aizpute-1988-991-115.xyz