#!/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 23.17951124 57.35149988 -gcp 16350.0 0.0 23.12902913 57.3305717 -gcp 16350.0 15843.0 23.09085394 57.35762441 -gcp 0.0 15843.0 23.14134327 57.37854746 GX18588/GX_18588_SK_frame_49.jpg GX_18588_SK_frame_49.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1440.0 2399.9866295264624\n15546.0 2328.1069637883006\n15408.0 11446.87688022284\n1464.0 11640.026740947076" | \
  gdaltransform -tps -output_xy GX_18588_SK_frame_49.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_18588_SK_frame_49.vrt GX_18588_SK_frame_49.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_18588_SK_frame_49.cut.vrt GX_18588_SK_frame_49.xyz