#!/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 24.02057648 57.03405177 -gcp 22014.0 0.0 24.01779563 57.12391029 -gcp 22014.0 21444.0 24.17653084 57.12533906 -gcp 0.0 21444.0 24.17957783 57.03484573 GX10525/GX_10525_SK_frame_538.jpg GX_10525_SK_frame_538.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1200.0 2064.0\n20832.0 1680.0\n20832.0 19056.0\n1248.0 19032.0" | \
  gdaltransform -tps -output_xy GX_10525_SK_frame_538.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_10525_SK_frame_538.vrt GX_10525_SK_frame_538.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_10525_SK_frame_538.cut.vrt GX_10525_SK_frame_538.xyz