#!/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 24.522943496704 57.506325688199 -gcp 7014.0 0.0 24.613237380981 57.514117243972 -gcp 7014.0 8253.0 24.634351730347 57.457048251877 -gcp 0.0 8253.0 24.5423412323 57.44933687368 LVVA_F7404_US1_GV302_0002.jpg LVVA_F7404_US1_GV302_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"273.0 3006.0\n1038.0 3024.0\n1047.0 297.0\n5790.0 264.0\n5823.0 3054.0\n6693.0 3037.125\n6654.0 7620.0\n264.0 7617.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV302_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV302_0002.vrt LVVA_F7404_US1_GV302_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV302_0002.cut.vrt LVVA_F7404_US1_GV302_0002.xyz