#!/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 26.21011734 56.80750425 -gcp 15897.0 0.0 26.2151804 56.72202178 -gcp 15897.0 15519.0 26.06582095 56.71849013 -gcp 0.0 15519.0 26.05566502 56.80172424 GX10863/GX_10863_SK_frame_914.jpg GX_10863_SK_frame_914.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "504.0 1299.0\n15000.0 1008.3743732590531\n15000.0 13611.67688022284\n528.0 13680.066852367687" | \
  gdaltransform -tps -output_xy GX_10863_SK_frame_914.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_10863_SK_frame_914.vrt GX_10863_SK_frame_914.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_10863_SK_frame_914.cut.vrt GX_10863_SK_frame_914.xyz