#!/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 24.17021177 56.97872039 -gcp 21414.0 0.0 24.21487444 57.0751827 -gcp 21414.0 21789.0 24.38472891 57.04905889 -gcp 0.0 21789.0 24.34600823 56.95939332 GX2206/GX_2206_SK_frame_52.jpg GX_2206_SK_frame_52.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "636.0 3096.0\n654.0 10077.0\n951.0 10308.0\n990.0 11733.0\n648.0 11964.0\n672.0 18468.0\n21411.0 18828.0\n21411.0 2838.0" | \
  gdaltransform -tps -output_xy GX_2206_SK_frame_52.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_2206_SK_frame_52.vrt GX_2206_SK_frame_52.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_2206_SK_frame_52.cut.vrt GX_2206_SK_frame_52.xyz