#!/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 21.393688322787803 56.51379956296583 -gcp 10674.0 0.0 21.39535120378156 56.486644754020844 -gcp 10674.0 12651.0 21.33720422236189 56.48551190567742 -gcp 0.0 12651.0 21.335836384359773 56.51267866729256 Aizpute-1988-991/Aizpute-1988-991-8.jpg Aizpute-1988-991-8.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "345.0 1203.0\n10224.0 1275.0\n10137.0 11208.0\n255.0 11121.0" | \
  gdaltransform -tps -output_xy Aizpute-1988-991-8.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aizpute-1988-991-8.vrt Aizpute-1988-991-8.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aizpute-1988-991-8.cut.vrt Aizpute-1988-991-8.xyz