#!/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 25.13433695 57.01208279 -gcp 14202.0 0.0 24.96256828 57.00655637 -gcp 14202.0 14124.0 24.96027231 57.10369191 -gcp 0.0 14124.0 25.1307857 57.10123297 GX2206/GX_2206_SK_frame_34.jpg GX_2206_SK_frame_34.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "864.0 2037.1788300835653\n1728.0 455.97325905292473\n12648.0 360.02674094707527\n12552.0 13824.267409470753\n1008.0 13775.933147632313" | \
  gdaltransform -tps -output_xy GX_2206_SK_frame_34.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_2206_SK_frame_34.vrt GX_2206_SK_frame_34.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_2206_SK_frame_34.cut.vrt GX_2206_SK_frame_34.xyz