#!/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 24.277457 56.97419927 -gcp 21414.0 0.0 24.31029797 57.07197932 -gcp 21414.0 21789.0 24.48328972 57.0513866 -gcp 0.0 21789.0 24.45520163 56.9613795 GX2206/GX_2206_SK_frame_50.jpg GX_2206_SK_frame_50.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "390.0 2946.0\n354.0 10128.0\n708.0 10458.0\n738.0 11844.0\n384.0 12162.0\n354.0 18810.0\n21144.0 19506.0\n21006.0 3102.0" | \
  gdaltransform -tps -output_xy GX_2206_SK_frame_50.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_2206_SK_frame_50.vrt GX_2206_SK_frame_50.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_2206_SK_frame_50.cut.vrt GX_2206_SK_frame_50.xyz