#!/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 1035.860911075394 1038.077813134375 26.33868098 57.3879111 -gcp 9770.60882136883 1013.886663022331 26.33948565 57.31431268 -gcp 9717.178516764352 9066.856936319993 26.21746659 57.31390997 -gcp 1130.1258511711608 9471.227681678967 26.20821834 57.38616191 GX8473/GX_8473_SK_frame_219_copy.jpg GX_8473_SK_frame_219_copy.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "636.0 1272.1136490250697\n9825.990026400705 985.4025652329692\n9888.0 9287.953203342619\n996.0 9324.153760445683" | \
  gdaltransform -tps -output_xy GX_8473_SK_frame_219_copy.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_8473_SK_frame_219_copy.vrt GX_8473_SK_frame_219_copy.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_8473_SK_frame_219_copy.cut.vrt GX_8473_SK_frame_219_copy.xyz