#!/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 3018.0 2274.0 26.726666666666667 56.25 -gcp 26529.0 2253.0 27.176666666666666 56.25 -gcp 26679.0 25527.0 27.176666666666666 56 -gcp 3081.0 25602.0 26.726666666666667 56 bruno/VII-22_1917VII.jpeg VII-22_1917VII.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "3018.0 2274.0\n26529.0 2253.0\n26679.0 25527.0\n3081.0 25602.0" | \
  gdaltransform -tps -output_xy VII-22_1917VII.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  VII-22_1917VII.vrt VII-22_1917VII.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES VII-22_1917VII.cut.vrt VII-22_1917VII.xyz