#!/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 2088.0 639.0 25.665666666666667 57.749583333333334 -gcp 11358.0 621.0 25.999 57.749583333333334 -gcp 11448.0 13779.0 25.999 57.499583333333334 -gcp 2055.0 13785.0 25.665666666666667 57.499583333333334 k_001_ktl2-1-85-a_080.jpg k_001_ktl2-1-85-a_080.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2088.0 639.0\n11358.0 621.0\n11448.0 13779.0\n2055.0 13785.0" | \
  gdaltransform -tps -output_xy k_001_ktl2-1-85-a_080.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  k_001_ktl2-1-85-a_080.vrt k_001_ktl2-1-85-a_080.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-a_080.cut.vrt k_001_ktl2-1-85-a_080.xyz