#!/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 5166.0 6408.0 27.916038333333333 56.853406666666665 -gcp 41112.0 6372.0 27.957698333333333 56.853406666666665 -gcp 41124.0 39240.0 27.957698333333333 56.83257666666667 -gcp 5160.0 39276.0 27.916038333333333 56.83257666666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003723-PLANSETE-102-f-15_3723.JPG LVVA-001679-0217-003723-PLANSETE-102-f-15_3723.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5166.0 6408.0\n41112.0 6372.0\n41124.0 39240.0\n5160.0 39276.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003723-PLANSETE-102-f-15_3723.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003723-PLANSETE-102-f-15_3723.vrt LVVA-001679-0217-003723-PLANSETE-102-f-15_3723.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003723-PLANSETE-102-f-15_3723.cut.vrt LVVA-001679-0217-003723-PLANSETE-102-f-15_3723.xyz