#!/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 4890.0 7218.0 24.499845 56.31183166666667 -gcp 41160.0 7278.0 24.541505 56.31183166666667 -gcp 41112.0 40110.0 24.541505 56.291001666666666 -gcp 4824.0 40074.0 24.499845 56.291001666666666 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003229-PLANSETE-050-g-5_3229.JPG LVVA-001679-0217-003229-PLANSETE-050-g-5_3229.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4890.0 7218.0\n41160.0 7278.0\n41112.0 40110.0\n4824.0 40074.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003229-PLANSETE-050-g-5_3229.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003229-PLANSETE-050-g-5_3229.vrt LVVA-001679-0217-003229-PLANSETE-050-g-5_3229.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003229-PLANSETE-050-g-5_3229.cut.vrt LVVA-001679-0217-003229-PLANSETE-050-g-5_3229.xyz