#!/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 5118.0 7272.0 24.062405 56.91589666666667 -gcp 40800.0 7248.0 24.083235 56.91589666666667 -gcp 40788.0 39822.0 24.083235 56.90548166666667 -gcp 5058.0 39798.0 24.062405 56.90548166666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-002644-PLANSETE-039-d-2-II_2644.JPG LVVA-001679-0217-002644-PLANSETE-039-d-2-II_2644.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5118.0 7272.0\n40800.0 7248.0\n40788.0 39822.0\n5058.0 39798.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-002644-PLANSETE-039-d-2-II_2644.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-002644-PLANSETE-039-d-2-II_2644.vrt LVVA-001679-0217-002644-PLANSETE-039-d-2-II_2644.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-002644-PLANSETE-039-d-2-II_2644.cut.vrt LVVA-001679-0217-002644-PLANSETE-039-d-2-II_2644.xyz