#!/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 3834.0 3327.0 24.75 57.333333333333336 -gcp 18063.0 3366.0 25 57.333333333333336 -gcp 17967.0 20886.0 25 57.166666666666664 -gcp 3654.0 20844.0 24.75 57.166666666666664 mapster/O-35-98-B_(VARNAKALN)_1938_greif.jpg O-35-98-B_(VARNAKALN)_1938_greif.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "3834.0 3327.0\n18063.0 3366.0\n17967.0 20886.0\n3654.0 20844.0" | \
  gdaltransform -tps -output_xy O-35-98-B_(VARNAKALN)_1938_greif.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  O-35-98-B_(VARNAKALN)_1938_greif.vrt O-35-98-B_(VARNAKALN)_1938_greif.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES O-35-98-B_(VARNAKALN)_1938_greif.cut.vrt O-35-98-B_(VARNAKALN)_1938_greif.xyz