#!/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 3693.0 1479.0 24 57.25 -gcp 13104.0 1548.0 24.333333333333332 57.25 -gcp 13065.0 14670.0 24.333333333333332 57 -gcp 3525.0 14583.0 24 57 k_001_ktl2-1-85_052-a.jpg k_001_ktl2-1-85_052-a.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "713.25 14546.223764575236\n776.25 9302.258745141587\n3585.75 9340.499583564686\n3693.0 1479.0\n13104.0 1548.0\n13065.0 14670.0\n3523.5 14582.988339811218" | \
  gdaltransform -tps -output_xy k_001_ktl2-1-85_052-a.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  k_001_ktl2-1-85_052-a.vrt k_001_ktl2-1-85_052-a.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_052-a.cut.vrt k_001_ktl2-1-85_052-a.xyz