#!/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 24.71237183 57.18083171 -gcp 16584.0 0.0 24.87875462 57.18778569 -gcp 16584.0 16764.0 24.88841057 57.09923994 -gcp 0.0 16764.0 24.72833633 57.0903807 GX10514/GX_10514_SK_frame_429.jpg GX_10514_SK_frame_429.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "840.0 2016.0\n16152.0 1788.0\n16152.0 14940.0\n852.0 14952.0" | \
  gdaltransform -tps -output_xy GX_10514_SK_frame_429.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_10514_SK_frame_429.vrt GX_10514_SK_frame_429.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_10514_SK_frame_429.cut.vrt GX_10514_SK_frame_429.xyz