#!/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 1105.5036905405796 1415.569334369397 26.16428375 57.39196983 -gcp 9589.400045427934 794.6255123184623 26.18076324 57.3199291 -gcp 9609.712989501717 9242.477545068423 26.05152369 57.31635989 -gcp 741.9738837218011 9628.323394872992 26.03702903 57.39072674 GX8473/GX_8473_SK_frame_216_copy.jpg GX_8473_SK_frame_216_copy.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "600.0 1404.0\n9816.0 1248.140389972145\n9864.0 9480.013370473538\n912.0 9672.100278551532" | \
  gdaltransform -tps -output_xy GX_8473_SK_frame_216_copy.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_8473_SK_frame_216_copy.vrt GX_8473_SK_frame_216_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_216_copy.cut.vrt GX_8473_SK_frame_216_copy.xyz