#!/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 24.664821624756 57.464942648767 -gcp 7095.0 0.0 24.766101837158 57.471681544976 -gcp 7095.0 10464.0 24.774942398071 57.395265429742 -gcp 0.0 10464.0 24.671945571899 57.388928763202 LVVA_F7404_US1_GV306_0002.jpg LVVA_F7404_US1_GV306_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"387.0 7386.0\n283.5 7236.0\n291.0 7020.0\n382.5 6961.5\n441.0 318.0\n6789.0 321.0\n6755.25 4206.75\n6811.5 4270.5\n6785.25 4353.75\n6813.75 4546.5\n6744.75 4596.75\n6741.0 9930.0\n384.0 9894.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV306_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV306_0002.vrt LVVA_F7404_US1_GV306_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV306_0002.cut.vrt LVVA_F7404_US1_GV306_0002.xyz