#!/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 5058.0 5568.0 27.624411666666667 56.853406666666665 -gcp 40986.0 5424.0 27.666073333333333 56.853406666666665 -gcp 41076.0 38310.0 27.666073333333333 56.83257666666667 -gcp 5124.0 38454.0 27.624411666666667 56.83257666666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003709-PLANSETE-102-d-16_3709.JPG LVVA-001679-0217-003709-PLANSETE-102-d-16_3709.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5058.0 5568.0\n40986.0 5424.0\n41076.0 38310.0\n5124.0 38454.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003709-PLANSETE-102-d-16_3709.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003709-PLANSETE-102-d-16_3709.vrt LVVA-001679-0217-003709-PLANSETE-102-d-16_3709.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003709-PLANSETE-102-d-16_3709.cut.vrt LVVA-001679-0217-003709-PLANSETE-102-d-16_3709.xyz