#!/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 4026.0 2448.0 26.837216666666666 56.25 -gcp 26004.0 2517.0 27.337216666666666 56.25 -gcp 26094.0 22218.0 27.337216666666666 56 -gcp 3999.0 22173.0 26.837216666666666 56 nr/KdwR-LC_U17_Puscha_1917_.jpg KdwR-LC_U17_Puscha_1917_.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4026.0 2448.0\n26004.0 2517.0\n26094.0 22218.0\n3999.0 22173.0" | \
  gdaltransform -tps -output_xy KdwR-LC_U17_Puscha_1917_.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  KdwR-LC_U17_Puscha_1917_.vrt KdwR-LC_U17_Puscha_1917_.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES KdwR-LC_U17_Puscha_1917_.cut.vrt KdwR-LC_U17_Puscha_1917_.xyz