#!/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 5226.0 7320.0 24.249878333333335 56.64510833333333 -gcp 41142.0 7332.0 24.29154 56.64510833333333 -gcp 41130.0 39786.0 24.29154 56.624278333333336 -gcp 5196.0 39762.0 24.249878333333335 56.624278333333336 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-002760-PLANSETE-040-e-7_2760.JPG LVVA-001679-0217-002760-PLANSETE-040-e-7_2760.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5226.0 7320.0\n41142.0 7332.0\n41130.0 39786.0\n5196.0 39762.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-002760-PLANSETE-040-e-7_2760.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-002760-PLANSETE-040-e-7_2760.vrt LVVA-001679-0217-002760-PLANSETE-040-e-7_2760.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-002760-PLANSETE-040-e-7_2760.cut.vrt LVVA-001679-0217-002760-PLANSETE-040-e-7_2760.xyz