#!/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 4716.0 5532.0 21.000328333333332 56.64510833333333 -gcp 40656.0 5670.0 21.04199 56.64510833333333 -gcp 40650.0 39420.0 21.04199 56.624278333333336 -gcp 4710.0 39282.0 21.000328333333332 56.624278333333336 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-000202-PLANSETE-005-d-5_0202.JPG LVVA-001679-0217-000202-PLANSETE-005-d-5_0202.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4716.0 5532.0\n40656.0 5670.0\n40650.0 39420.0\n4710.0 39282.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-000202-PLANSETE-005-d-5_0202.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-000202-PLANSETE-005-d-5_0202.vrt LVVA-001679-0217-000202-PLANSETE-005-d-5_0202.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-000202-PLANSETE-005-d-5_0202.cut.vrt LVVA-001679-0217-000202-PLANSETE-005-d-5_0202.xyz