#!/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 4626.0 7062.0 27.499428333333334 56.207681666666666 -gcp 41172.0 6828.0 27.54109 56.207681666666666 -gcp 41358.0 39702.0 27.54109 56.18685166666667 -gcp 4794.0 39936.0 27.499428333333334 56.18685166666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004004-PLANSETE-105-a-9_4004.JPG LVVA-001679-0217-004004-PLANSETE-105-a-9_4004.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4626.0 7062.0\n41172.0 6828.0\n41358.0 39702.0\n4794.0 39936.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004004-PLANSETE-105-a-9_4004.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004004-PLANSETE-105-a-9_4004.vrt LVVA-001679-0217-004004-PLANSETE-105-a-9_4004.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004004-PLANSETE-105-a-9_4004.cut.vrt LVVA-001679-0217-004004-PLANSETE-105-a-9_4004.xyz