#!/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 907.875 909.0 22.44793793 57.7330929 -gcp 9694.5 905.625 22.51043838 57.73309392 -gcp 9700.125 11899.125 22.51044075 57.69142666 -gcp 906.375 11906.25 22.44794029 57.69142565 k_001_ktl2-0-132_0021.jpg k_001_ktl2-0-132_0021.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "907.875 909.0\n9694.5 905.625\n9700.125 11899.125\n906.375 11906.25" | \
  gdaltransform -tps -output_xy k_001_ktl2-0-132_0021.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  k_001_ktl2-0-132_0021.vrt k_001_ktl2-0-132_0021.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES k_001_ktl2-0-132_0021.cut.vrt k_001_ktl2-0-132_0021.xyz