#!/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 25.65350533 57.14903942 -gcp 14331.0 0.0 25.66094791 57.23217459 -gcp 14331.0 13953.0 25.81058621 57.23057099 -gcp 0.0 13953.0 25.80817759 57.14591398 GX10802/GX_10802_SK_frame_388.jpg GX_10802_SK_frame_388.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "624.0 1248.693718732629\n13920.0 1008.5603112840465\n13920.0 12294.49694274597\n624.0 12198.443579766537" | \
  gdaltransform -tps -output_xy GX_10802_SK_frame_388.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_10802_SK_frame_388.vrt GX_10802_SK_frame_388.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_10802_SK_frame_388.cut.vrt GX_10802_SK_frame_388.xyz