#!/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 25.435581207275 57.917993440169 -gcp 10749.0 0.0 25.536346435547 57.925332272909 -gcp 10749.0 11757.0 25.55814743042 57.862287994177 -gcp 0.0 11757.0 25.45553835894964 57.85376828762738 LVVA_F7404_US1_GV1233_0002.jpg LVVA_F7404_US1_GV1233_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"2661.0 10134.0\n2541.0 9879.0\n2493.0 8565.0\n2334.0 7926.0\n1998.0 7596.0\n1701.0 7227.0\n804.0 4221.0\n609.0 4218.0\n618.0 732.0\n10017.0 768.0\n10089.0 10851.0\n2667.0 10791.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV1233_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV1233_0002.vrt LVVA_F7404_US1_GV1233_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV1233_0002.cut.vrt LVVA_F7404_US1_GV1233_0002.xyz