#!/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 2031.0 705.0 23.332277666666666 56.499527666666665 -gcp 11631.0 693.0 23.665611 56.499527666666665 -gcp 11712.0 13833.0 23.665611 56.249527666666665 -gcp 1989.0 13836.0 23.332277666666666 56.249527666666665 k_001_ktl2-1-85-a_038.jpg k_001_ktl2-1-85-a_038.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2031.0 705.0\n11631.0 693.0\n11712.0 13833.0\n1989.0 13836.0" | \
  gdaltransform -tps -output_xy k_001_ktl2-1-85-a_038.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  k_001_ktl2-1-85-a_038.vrt k_001_ktl2-1-85-a_038.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_038.cut.vrt k_001_ktl2-1-85-a_038.xyz