#!/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 26.774336099624637 57.569267470779124 -gcp 10524.0 0.0 26.77427172660828 57.542612554611516 -gcp 10524.0 10632.0 26.724634766578678 57.542958026062685 -gcp 0.0 10632.0 26.724940538406372 57.5693134970156 Aluksne-1989-1185/Aluksne-1989-1185-148.jpg Aluksne-1989-1185-148.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "999.0 1017.0\n978.0 9504.0\n9411.0 9534.0\n9441.0 1002.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-148.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-148.vrt Aluksne-1989-1185-148.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-148.cut.vrt Aluksne-1989-1185-148.xyz