#!/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 24.530110359191898 57.278439617049855 -gcp 10503.0 0.0 24.62958812713623 57.282429489029326 -gcp 10503.0 10941.0 24.64370727539063 57.22904076708625 -gcp 0.0 10941.0 24.547061920166016 57.22332591478737 LVVA_F7404_US1_GV154_0002.jpg LVVA_F7404_US1_GV154_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"0.0 0.0\n10500.0 0.0\n10500.0 10938.0\n0.0 10938.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV154_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV154_0002.vrt LVVA_F7404_US1_GV154_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV154_0002.cut.vrt LVVA_F7404_US1_GV154_0002.xyz