#!/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 4242.0 5946.0 20.979498333333332 56.280586666666665 -gcp 40572.0 5856.0 21.000328333333332 56.280586666666665 -gcp 40710.0 39654.0 21.000328333333332 56.27017166666667 -gcp 4362.0 39672.0 20.979498333333332 56.27017166666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-000429-PLANSETE-0K6-g-9-IV_0429.JPG LVVA-001679-0217-000429-PLANSETE-0K6-g-9-IV_0429.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4242.0 5946.0\n40572.0 5856.0\n40710.0 39654.0\n4362.0 39672.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-000429-PLANSETE-0K6-g-9-IV_0429.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-000429-PLANSETE-0K6-g-9-IV_0429.vrt LVVA-001679-0217-000429-PLANSETE-0K6-g-9-IV_0429.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-000429-PLANSETE-0K6-g-9-IV_0429.cut.vrt LVVA-001679-0217-000429-PLANSETE-0K6-g-9-IV_0429.xyz