#!/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 26.44296412 56.69418298 -gcp 14280.0 0.0 26.5964602 56.70191391 -gcp 14280.0 15441.0 26.61177852 56.61329828 -gcp 0.0 15441.0 26.46196243 56.60337873 GX10511/GX_10511_SK_frame_71.jpg GX_10511_SK_frame_71.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "900.0 2388.0\n13872.0 2268.0\n13968.0 13788.0\n840.0 13584.0" | \
  gdaltransform -tps -output_xy GX_10511_SK_frame_71.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_10511_SK_frame_71.vrt GX_10511_SK_frame_71.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_10511_SK_frame_71.cut.vrt GX_10511_SK_frame_71.xyz