#!/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 2439.0 2367.0 27.5 57.333333333333336 -gcp 16665.0 2334.0 27.75 57.333333333333336 -gcp 16707.0 19845.0 27.75 57.166666666666664 -gcp 2394.0 19872.0 27.5 57.166666666666664 mapster/O-35-104-A_(MARIENGAUZEN)_1937_greif.jpg O-35-104-A_(MARIENGAUZEN)_1937_greif.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2439.0 2367.0\n16665.0 2334.0\n16707.0 19845.0\n2394.0 19872.0" | \
  gdaltransform -tps -output_xy O-35-104-A_(MARIENGAUZEN)_1937_greif.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  O-35-104-A_(MARIENGAUZEN)_1937_greif.vrt O-35-104-A_(MARIENGAUZEN)_1937_greif.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES O-35-104-A_(MARIENGAUZEN)_1937_greif.cut.vrt O-35-104-A_(MARIENGAUZEN)_1937_greif.xyz