#!/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 24.94984652 57.187824 -gcp 17007.0 0.0 24.95228586 57.09790032 -gcp 17007.0 18747.0 24.77180469 57.09363757 -gcp 0.0 18747.0 24.76066728 57.1849488 GX10514/GX_10514_SK_frame_430.jpg GX_10514_SK_frame_430.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "504.0 2538.0\n606.0 15612.0\n16488.0 15390.0\n16218.0 2094.0" | \
  gdaltransform -tps -output_xy GX_10514_SK_frame_430.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_10514_SK_frame_430.vrt GX_10514_SK_frame_430.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_10514_SK_frame_430.cut.vrt GX_10514_SK_frame_430.xyz