#!/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 0.0 0.0 26.538924679876523 57.35279057415169 -gcp 13875.0 0.0 26.8656137183507 57.35279842839146 -gcp 13875.0 16521.0 26.863716106096525 57.14480216148551 -gcp 0.0 16521.0 26.539331154230172 57.14506831537721 k_001_ktl1-0-140_5.jpg k_001_ktl1-0-140_5.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"12230.25 1539.0\n1602.375 1540.4991671293724\n1597.875 14794.876041088282\n12285.375 14780.247917823432\" | \
  gdaltransform -tps -output_xy k_001_ktl1-0-140_5.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  k_001_ktl1-0-140_5.vrt k_001_ktl1-0-140_5.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES k_001_ktl1-0-140_5.cut.vrt k_001_ktl1-0-140_5.xyz