#!/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 24.640617370605 57.63621291596 -gcp 7074.0 0.0 24.740266799927 57.64255271314 -gcp 7074.0 7935.0 24.749879837036 57.581727770292 -gcp 0.0 7935.0 24.655981063843 57.574641002576 LVVA_F7404_US1_GV314_0002.jpg LVVA_F7404_US1_GV314_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"345.0 342.0\n6750.0 366.0\n6699.0 5199.0\n3241.5 5202.0\n3199.5 7316.25\n309.0 7263.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV314_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV314_0002.vrt LVVA_F7404_US1_GV314_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV314_0002.cut.vrt LVVA_F7404_US1_GV314_0002.xyz