#!/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 22.62239456 57.672032 -gcp 10986.0 0.0 22.55409479 57.67109105 -gcp 10986.0 10800.0 22.54967451 57.70692153 -gcp 0.0 10800.0 22.61889696 57.70893933 GX18588/GX_18588_SK_frame_077.jpg GX_18588_SK_frame_077.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1056.0 1319.9331476323118\n10296.0 1080.1604456824516\n10248.0 8903.893036211699\n936.0 9096.013370473536" | \
  gdaltransform -tps -output_xy GX_18588_SK_frame_077.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_18588_SK_frame_077.vrt GX_18588_SK_frame_077.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_18588_SK_frame_077.cut.vrt GX_18588_SK_frame_077.xyz