#!/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 22.33614922 57.67586348 -gcp 10980.0 0.0 22.55373001 57.6526812 -gcp 10980.0 11352.0 22.5042057 57.54136322 -gcp 0.0 11352.0 22.31254605 57.55770484 GX13126/GX_13126_SK_frame_72.jpg GX_13126_SK_frame_72.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "864.0 1223.9866295264624\n10440.0 1175.8395543175484\n10656.0 9743.852924791088\n1056.0 9911.812813370474" | \
  gdaltransform -tps -output_xy GX_13126_SK_frame_72.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_13126_SK_frame_72.vrt GX_13126_SK_frame_72.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_13126_SK_frame_72.cut.vrt GX_13126_SK_frame_72.xyz