#!/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 26.28386048827415 57.01815626948101 -gcp 14340.0 0.0 26.619370691625104 57.017043453235964 -gcp 14340.0 16353.0 26.615255908245373 56.809643774206315 -gcp 0.0 16353.0 26.28186065707415 56.8105859899916 205-Aizkuja_1925.jpg 205-Aizkuja_1925.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"1833.0 1410.0\n1910.25 14551.123958911718\n12667.5 14495.249583564684\n12530.25 1344.3752082176568\" | \
  gdaltransform -tps -output_xy 205-Aizkuja_1925.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  205-Aizkuja_1925.vrt 205-Aizkuja_1925.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES 205-Aizkuja_1925.cut.vrt 205-Aizkuja_1925.xyz