#!/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 682.5 931.5 22.51043602 57.77476118 -gcp 9459.75 926.25 22.57293648 57.77476219 -gcp 9474.75 11919.0 22.57293885 57.73309493 -gcp 681.0 11930.25 22.51043839 57.73309392 k_001_ktl2-0-132_0019.jpg k_001_ktl2-0-132_0019.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "682.5 931.5\n9459.75 926.25\n9474.75 11919.0\n681.0 11930.25" | \
  gdaltransform -tps -output_xy k_001_ktl2-0-132_0019.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  k_001_ktl2-0-132_0019.vrt k_001_ktl2-0-132_0019.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES k_001_ktl2-0-132_0019.cut.vrt k_001_ktl2-0-132_0019.xyz