#!/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 5232.0 7476.0 25.70801 57.394983333333336 -gcp 40464.0 7482.0 25.749671666666668 57.394983333333336 -gcp 40422.0 40350.0 25.749671666666668 57.37415333333333 -gcp 5178.0 40344.0 25.70801 57.37415333333333 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003339-PLANSETE-064-e-6_3339.JPG LVVA-001679-0217-003339-PLANSETE-064-e-6_3339.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5232.0 7476.0\n40464.0 7482.0\n40422.0 40350.0\n5178.0 40344.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003339-PLANSETE-064-e-6_3339.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003339-PLANSETE-064-e-6_3339.vrt LVVA-001679-0217-003339-PLANSETE-064-e-6_3339.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003339-PLANSETE-064-e-6_3339.cut.vrt LVVA-001679-0217-003339-PLANSETE-064-e-6_3339.xyz