#!/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 5058.0 6216.0 26.62455 56.64510833333333 -gcp 41022.0 6168.0 26.666211666666666 56.64510833333333 -gcp 41034.0 39054.0 26.666211666666666 56.624278333333336 -gcp 5058.0 39108.0 26.62455 56.624278333333336 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003523-PLANSETE-085-d-8_3523.JPG LVVA-001679-0217-003523-PLANSETE-085-d-8_3523.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5058.0 6216.0\n41022.0 6168.0\n41034.0 39054.0\n5058.0 39108.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003523-PLANSETE-085-d-8_3523.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003523-PLANSETE-085-d-8_3523.vrt LVVA-001679-0217-003523-PLANSETE-085-d-8_3523.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003523-PLANSETE-085-d-8_3523.cut.vrt LVVA-001679-0217-003523-PLANSETE-085-d-8_3523.xyz