#!/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 885.0 1098.0 24.476666666666667 56.75 -gcp 10671.0 1053.0 24.926666666666666 56.75 -gcp 10728.0 11043.0 24.926666666666666 56.5 -gcp 891.0 11070.0 24.476666666666667 56.5 Bruno/V-17_Lennewaden.jpg V-17_Lennewaden.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "885.0 1098.0\n10671.0 1053.0\n10728.0 11043.0\n891.0 11070.0" | \
  gdaltransform -tps -output_xy V-17_Lennewaden.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  V-17_Lennewaden.vrt V-17_Lennewaden.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES V-17_Lennewaden.cut.vrt V-17_Lennewaden.xyz