#!/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 4902.0 5904.0 21.833546666666667 57.353323333333336 -gcp 40206.0 6102.0 21.875208333333333 57.353323333333336 -gcp 40134.0 39888.0 21.875208333333333 57.33249333333333 -gcp 4788.0 39672.0 21.833546666666667 57.33249333333333 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-000614-PLANSETE-009-f-13_0614.JPG LVVA-001679-0217-000614-PLANSETE-009-f-13_0614.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4902.0 5904.0\n40206.0 6102.0\n40134.0 39888.0\n4788.0 39672.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-000614-PLANSETE-009-f-13_0614.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-000614-PLANSETE-009-f-13_0614.vrt LVVA-001679-0217-000614-PLANSETE-009-f-13_0614.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-000614-PLANSETE-009-f-13_0614.cut.vrt LVVA-001679-0217-000614-PLANSETE-009-f-13_0614.xyz