#!/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 336.0 1077.0 25.376666666666665 56.75 -gcp 10080.0 1077.0 25.826666666666668 56.75 -gcp 10098.0 10989.0 25.826666666666668 56.5 -gcp 336.0 10971.0 25.376666666666665 56.5 Bruno/V-19_Kokenhusen-1.jpg V-19_Kokenhusen-1.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "336.0 1077.0\n10080.0 1077.0\n10098.0 10989.0\n336.0 10971.0" | \
  gdaltransform -tps -output_xy V-19_Kokenhusen-1.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  V-19_Kokenhusen-1.vrt V-19_Kokenhusen-1.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES V-19_Kokenhusen-1.cut.vrt V-19_Kokenhusen-1.xyz