#!/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 25.3485918 56.69860405 -gcp 15018.0 0.0 25.37000656 56.61033001 -gcp 15018.0 14082.0 25.2173996 56.59919248 -gcp 0.0 14082.0 25.1977551 56.68801632 GX10511/GX_10511_SK_frame_44.jpg GX_10511_SK_frame_44.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1164.0 1248.0\n14640.0 1008.0\n14616.0 12792.0\n1080.0 12540.0" | \
  gdaltransform -tps -output_xy GX_10511_SK_frame_44.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_10511_SK_frame_44.vrt GX_10511_SK_frame_44.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_10511_SK_frame_44.cut.vrt GX_10511_SK_frame_44.xyz