#!/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 24.91484642 56.64124457 -gcp 13863.0 0.0 25.066219 56.6378234 -gcp 13863.0 14775.0 25.05755186 56.54779324 -gcp 0.0 14775.0 24.90626335 56.55378255 GX10518/GX_10518B_SK_frame_910.jpg GX_10518B_SK_frame_910.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1944.0 2040.0\n20664.0 1728.0\n20664.0 18408.0\n2328.0 18768.0" | \
  gdaltransform -tps -output_xy GX_10518B_SK_frame_910.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_10518B_SK_frame_910.vrt GX_10518B_SK_frame_910.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_10518B_SK_frame_910.cut.vrt GX_10518B_SK_frame_910.xyz