#!/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 762.0 1356.0 23.126666666666665 56.75 -gcp 10533.0 1404.0 23.576666666666668 56.75 -gcp 10551.0 11298.0 23.576666666666668 56.5 -gcp 756.0 11247.0 23.126666666666665 56.5 Bruno/V-14_Doblen.jpg V-14_Doblen.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "762.0 1356.0\n10533.0 1404.0\n10551.0 11298.0\n756.0 11247.0" | \
  gdaltransform -tps -output_xy V-14_Doblen.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  V-14_Doblen.vrt V-14_Doblen.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES V-14_Doblen.cut.vrt V-14_Doblen.xyz