#!/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 25.33094287 57.36441597 -gcp 12009.0 0.0 25.36768913 57.3375359 -gcp 12009.0 12495.0 25.32138703 57.31668036 -gcp 0.0 12495.0 25.27945518 57.34050038 GX18586/GX_18586_SK_frame_10.jpg GX_18586_SK_frame_10.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1248.0 714.0\n1254.0 1482.0\n372.0 1524.0\n336.0 9324.0\n11724.0 9288.0\n11652.0 660.0" | \
  gdaltransform -tps -output_xy GX_18586_SK_frame_10.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_18586_SK_frame_10.vrt GX_18586_SK_frame_10.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_18586_SK_frame_10.cut.vrt GX_18586_SK_frame_10.xyz