#!/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 1023.5721410701731 798.2175542738404 26.11237764 57.39087032 -gcp 9429.606273214918 794.4737141064145 26.12057447 57.31946407 -gcp 9504.274862954808 9611.533992957666 25.98704338 57.31501579 -gcp 218.73170129589366 9860.889236202796 25.97393274 57.39164661 GX8473/GX_8473_SK_frame_215_copy.jpg GX_8473_SK_frame_215_copy.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "552.0 1392.0\n9552.0 1008.1805013927577\n9708.0 9252.040111420612\n816.0 9540.187186629526" | \
  gdaltransform -tps -output_xy GX_8473_SK_frame_215_copy.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_8473_SK_frame_215_copy.vrt GX_8473_SK_frame_215_copy.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_8473_SK_frame_215_copy.cut.vrt GX_8473_SK_frame_215_copy.xyz