#!/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 1671.0 1074.0 22.25 57.25 -gcp 9804.0 1056.0 23.75 57.25 -gcp 9864.0 7407.0 23.75 56.61666666666667 -gcp 1644.0 7407.0 22.25 56.61666666666667 k_001_kta-3-415_34.jpeg k_001_kta-3-415_34.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1671.0 1074.0\n9804.0 1056.0\n9864.0 7407.0\n1644.0 7407.0" | \
  gdaltransform -tps -output_xy k_001_kta-3-415_34.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  k_001_kta-3-415_34.vrt k_001_kta-3-415_34.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES k_001_kta-3-415_34.cut.vrt k_001_kta-3-415_34.xyz