#!/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 4998.0 5850.0 21.833546666666667 57.60328166666667 -gcp 40068.0 5898.0 21.875208333333333 57.60328166666667 -gcp 40116.0 39678.0 21.875208333333333 57.58245333333333 -gcp 5016.0 39624.0 21.833546666666667 57.58245333333333 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-000542-PLANSETE-008-f-13_0542.JPG LVVA-001679-0217-000542-PLANSETE-008-f-13_0542.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4998.0 5850.0\n40068.0 5898.0\n40116.0 39678.0\n5016.0 39624.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-000542-PLANSETE-008-f-13_0542.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-000542-PLANSETE-008-f-13_0542.vrt LVVA-001679-0217-000542-PLANSETE-008-f-13_0542.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-000542-PLANSETE-008-f-13_0542.cut.vrt LVVA-001679-0217-000542-PLANSETE-008-f-13_0542.xyz