#!/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 26.229676651089367 57.18725606977291 -gcp 16476.0 0.0 26.617465785720746 57.18754873498611 -gcp 16476.0 16698.0 26.615952065835653 56.97592178982818 -gcp 0.0 16698.0 26.2303196369026 56.975697694424106 204-Tirza_1924.jpg 204-Tirza_1924.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"1992.0 1620.0\n1977.0 14782.500832870628\n14802.0 14799.0\n14753.25 1639.1256246529706\" | \
  gdaltransform -tps -output_xy 204-Tirza_1924.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  204-Tirza_1924.vrt 204-Tirza_1924.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES 204-Tirza_1924.cut.vrt 204-Tirza_1924.xyz