#!/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 5550.0 6606.0 24.083235 56.68676833333333 -gcp 41430.0 6702.0 24.124896666666668 56.68676833333333 -gcp 41310.0 39570.0 24.124896666666668 56.66593833333334 -gcp 5400.0 39432.0 24.083235 56.66593833333334 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-002717-PLANSETE-040-a-15_2717.JPG LVVA-001679-0217-002717-PLANSETE-040-a-15_2717.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5550.0 6606.0\n41430.0 6702.0\n41310.0 39570.0\n5400.0 39432.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-002717-PLANSETE-040-a-15_2717.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-002717-PLANSETE-040-a-15_2717.vrt LVVA-001679-0217-002717-PLANSETE-040-a-15_2717.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-002717-PLANSETE-040-a-15_2717.cut.vrt LVVA-001679-0217-002717-PLANSETE-040-a-15_2717.xyz