#!/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 2001.0 648.0 23.998966666666668 56.49953333333333 -gcp 11607.0 648.0 24.3323 56.49953333333333 -gcp 11667.0 13803.0 24.3323 56.24953333333333 -gcp 1938.0 13800.0 23.998966666666668 56.24953333333333 k_001_ktl2-1-85-a_045.jpg k_001_ktl2-1-85-a_045.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2001.0 648.0\n11607.0 648.0\n11667.0 13803.0\n1938.0 13800.0" | \
  gdaltransform -tps -output_xy k_001_ktl2-1-85-a_045.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  k_001_ktl2-1-85-a_045.vrt k_001_ktl2-1-85-a_045.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_045.cut.vrt k_001_ktl2-1-85-a_045.xyz