#!/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 22.5310418 57.75354059 -gcp 10980.0 0.0 22.71510251 57.71479075 -gcp 10980.0 11061.0 22.64643251 57.60657103 -gcp 0.0 11061.0 22.44103214 57.65059983 GX13126/GX_13126_SK_frame_61.jpg GX_13126_SK_frame_61.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "336.0 1419.0\n10104.0 1223.8128133704731\n10200.0 9767.986629526464\n432.0 9816.080222841225" | \
  gdaltransform -tps -output_xy GX_13126_SK_frame_61.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_13126_SK_frame_61.vrt GX_13126_SK_frame_61.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_13126_SK_frame_61.cut.vrt GX_13126_SK_frame_61.xyz