#!/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 2739.0 2964.0 21 56.5 -gcp 7908.0 3108.0 22 56.5 -gcp 7806.0 7776.0 22 56 -gcp 2529.0 7737.0 21 56 k_001_kta-3-414_13.jpeg k_001_kta-3-414_13.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1083.0 1065.0\n8906.25 1079.2479178234314\n8865.0 7716.752082176569\n1093.5 7694.247917823431" | \
  gdaltransform -tps -output_xy k_001_kta-3-414_13.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  k_001_kta-3-414_13.vrt k_001_kta-3-414_13.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES k_001_kta-3-414_13.cut.vrt k_001_kta-3-414_13.xyz