#!/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 5148.0 6642.0 28.124341666666666 56.207681666666666 -gcp 41682.0 6636.0 28.166003333333332 56.207681666666666 -gcp 41646.0 39486.0 28.166003333333332 56.18685166666667 -gcp 5088.0 39462.0 28.124341666666666 56.18685166666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004175-PLANSETE-111-a-12_4175.JPG LVVA-001679-0217-004175-PLANSETE-111-a-12_4175.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5148.0 6642.0\n41682.0 6636.0\n41646.0 39486.0\n5088.0 39462.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004175-PLANSETE-111-a-12_4175.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004175-PLANSETE-111-a-12_4175.vrt LVVA-001679-0217-004175-PLANSETE-111-a-12_4175.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004175-PLANSETE-111-a-12_4175.cut.vrt LVVA-001679-0217-004175-PLANSETE-111-a-12_4175.xyz