#!/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 907.5 1495.5526462395544 27.5 56.5 -gcp 13740.0 1578.3526462395544 27 56.5 -gcp 13731.0 13149.14791086351 27 56.25 -gcp 825.75 13100.35278551532 27.5 56.25 86-Preili_1933.jpg 86-Preili_1933.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"907.5 1495.5526462395544\n13740.0 1578.3526462395544\n13731.0 13149.14791086351\n825.75 13100.35278551532\" | \
  gdaltransform -tps -output_xy 86-Preili_1933.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  86-Preili_1933.vrt 86-Preili_1933.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES 86-Preili_1933.cut.vrt 86-Preili_1933.xyz