#!/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 2505.0 2538.0 28.076666666666668 56.25 -gcp 25923.0 2412.0 28.526666666666667 56.25 -gcp 26208.0 25863.0 28.526666666666667 56 -gcp 2634.0 25995.0 28.076666666666668 56 bruno/VII-25_1928III.jpeg VII-25_1928III.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2505.0 2538.0\n25923.0 2412.0\n26208.0 25863.0\n2634.0 25995.0" | \
  gdaltransform -tps -output_xy VII-25_1928III.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  VII-25_1928III.vrt VII-25_1928III.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES VII-25_1928III.cut.vrt VII-25_1928III.xyz