#!/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 24.36937094 57.04011691 -gcp 13971.0 0.0 24.37033314 57.12519724 -gcp 13971.0 14175.0 24.5274276 57.12457506 -gcp 0.0 14175.0 24.52702075 57.03946731 GX10525/GX_10525_SK_frame_532.jpg GX_10525_SK_frame_532.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "600.0 1320.0\n13872.0 912.0\n13824.0 12732.0\n804.0 12708.0" | \
  gdaltransform -tps -output_xy GX_10525_SK_frame_532.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_10525_SK_frame_532.vrt GX_10525_SK_frame_532.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_10525_SK_frame_532.cut.vrt GX_10525_SK_frame_532.xyz