#!/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 25.653419494629 56.727774394633 -gcp 10830.0 0.0 25.763282775879 56.735260677049 -gcp 10830.0 9216.0 25.77392578125 56.686266775551 -gcp 0.0 9216.0 25.662260055542 56.67773343265 LVVA_F7404_US1_GV1666_0002.jpg LVVA_F7404_US1_GV1666_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"732.0 822.0\n10050.0 834.0\n9987.0 7932.0\n6897.0 7932.0\n6780.0 8127.0\n6276.0 8130.0\n6015.0 7932.0\n5076.0 7920.0\n4683.0 8166.0\n3816.0 7941.0\n753.0 7923.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV1666_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV1666_0002.vrt LVVA_F7404_US1_GV1666_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV1666_0002.cut.vrt LVVA_F7404_US1_GV1666_0002.xyz