#!/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 5040.0 7500.0 26.791193333333332 56.95755666666667 -gcp 40698.0 7374.0 26.832855 56.95755666666667 -gcp 40758.0 39660.0 26.832855 56.936726666666665 -gcp 5124.0 40032.0 26.791193333333332 56.936726666666665 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003380-PLANSETE-084-b-12_3380.JPG LVVA-001679-0217-003380-PLANSETE-084-b-12_3380.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5040.0 7500.0\n40698.0 7374.0\n40758.0 39660.0\n5124.0 40032.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003380-PLANSETE-084-b-12_3380.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003380-PLANSETE-084-b-12_3380.vrt LVVA-001679-0217-003380-PLANSETE-084-b-12_3380.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003380-PLANSETE-084-b-12_3380.cut.vrt LVVA-001679-0217-003380-PLANSETE-084-b-12_3380.xyz