#!/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 25.37980466 57.37071769 -gcp 12009.0 0.0 25.40542521 57.34087407 -gcp 12009.0 13074.0 25.34794635 57.32468549 -gcp 0.0 13074.0 25.31701511 57.35401254 GX18586/GX_18586_SK_frame_8.jpg GX_18586_SK_frame_8.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1380.0 1014.0\n1320.0 1866.0\n384.0 1896.0\n330.0 9600.0\n11574.0 9684.0\n11610.0 1248.0" | \
  gdaltransform -tps -output_xy GX_18586_SK_frame_8.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_18586_SK_frame_8.vrt GX_18586_SK_frame_8.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_18586_SK_frame_8.cut.vrt GX_18586_SK_frame_8.xyz