#!/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 2856.0 1374.0 21.666666666666668 57.5 -gcp 17028.0 1359.0 22 57.5 -gcp 17115.0 21144.0 22 57.25 -gcp 2859.0 21177.0 21.666666666666668 57.25 k_001_ktl2-1-85_11.jpg k_001_ktl2-1-85_11.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2856.0 1374.0\n17028.0 1359.0\n17115.0 21144.0\n2859.0 21177.0" | \
  gdaltransform -tps -output_xy k_001_ktl2-1-85_11.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  k_001_ktl2-1-85_11.vrt k_001_ktl2-1-85_11.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES k_001_ktl2-1-85_11.cut.vrt k_001_ktl2-1-85_11.xyz