#!/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 951.2209042475251 1370.6403216019044 26.04978561 57.39089401 -gcp 9336.911328351525 1040.1544505253887 26.06106162 57.32007418 -gcp 9571.584527538213 9664.016555624185 25.93052387 57.3148541 -gcp 223.79016672773173 10150.729909757409 25.91460228 57.39355412 GX8473/GX_8473_SK_frame_214_copy.jpg GX_8473_SK_frame_214_copy.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "672.0 1439.959888579387\n9552.0 1103.959888579387\n9816.0 9287.986629526464\n840.0 9600.254038997213" | \
  gdaltransform -tps -output_xy GX_8473_SK_frame_214_copy.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_8473_SK_frame_214_copy.vrt GX_8473_SK_frame_214_copy.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_8473_SK_frame_214_copy.cut.vrt GX_8473_SK_frame_214_copy.xyz