#!/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 6666.0 8454.0 27.249463333333335 56.37432 -gcp 43014.0 8280.0 27.291125 56.37432 -gcp 43122.0 41058.0 27.291125 56.35349 -gcp 6792.0 41208.0 27.249463333333335 56.35349 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004310-PLANSETE-95-e-11_4310.JPG LVVA-001679-0217-004310-PLANSETE-95-e-11_4310.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "6666.0 8454.0\n43014.0 8280.0\n43122.0 41058.0\n6792.0 41208.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004310-PLANSETE-95-e-11_4310.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004310-PLANSETE-95-e-11_4310.vrt LVVA-001679-0217-004310-PLANSETE-95-e-11_4310.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004310-PLANSETE-95-e-11_4310.cut.vrt LVVA-001679-0217-004310-PLANSETE-95-e-11_4310.xyz