#!/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 24.334630966187 57.772595168158 -gcp 14340.0 0.0 24.467153549194 57.778499256958 -gcp 14340.0 8631.0 24.477882385254 57.735684195265 -gcp 0.0 8631.0 24.341583251953 57.727619216215 LVVA_F7404_US1_GV1198_0002.jpg LVVA_F7404_US1_GV1198_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"522.0 489.0\n14091.0 519.0\n14037.0 7671.0\n546.0 7665.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV1198_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV1198_0002.vrt LVVA_F7404_US1_GV1198_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV1198_0002.cut.vrt LVVA_F7404_US1_GV1198_0002.xyz