#!/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 5034.0 5946.0 23.083373333333334 57.082535 -gcp 40602.0 5958.0 23.125035 57.082535 -gcp 40668.0 39726.0 23.125035 57.061706666666666 -gcp 5106.0 39684.0 23.083373333333334 57.061706666666666 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-001869-PLANSETE-028-g-3_1869.JPG LVVA-001679-0217-001869-PLANSETE-028-g-3_1869.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5034.0 5946.0\n40602.0 5958.0\n40668.0 39726.0\n5106.0 39684.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-001869-PLANSETE-028-g-3_1869.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-001869-PLANSETE-028-g-3_1869.vrt LVVA-001679-0217-001869-PLANSETE-028-g-3_1869.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-001869-PLANSETE-028-g-3_1869.cut.vrt LVVA-001679-0217-001869-PLANSETE-028-g-3_1869.xyz