#!/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 4830.0 5058.0 26.916176666666665 56.207681666666666 -gcp 41292.0 4968.0 26.957836666666665 56.207681666666666 -gcp 41340.0 37446.0 26.957836666666665 56.18685166666667 -gcp 4890.0 37554.0 26.916176666666665 56.18685166666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004223-PLANSETE-87-c-11_4223.JPG LVVA-001679-0217-004223-PLANSETE-87-c-11_4223.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4830.0 5058.0\n41292.0 4968.0\n41340.0 37446.0\n4890.0 37554.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004223-PLANSETE-87-c-11_4223.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004223-PLANSETE-87-c-11_4223.vrt LVVA-001679-0217-004223-PLANSETE-87-c-11_4223.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004223-PLANSETE-87-c-11_4223.cut.vrt LVVA-001679-0217-004223-PLANSETE-87-c-11_4223.xyz