#!/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 4782.0 4554.0 26.957836666666665 56.207681666666666 -gcp 41238.0 4434.0 26.999498333333335 56.207681666666666 -gcp 41262.0 37212.0 26.999498333333335 56.18685166666667 -gcp 4806.0 37296.0 26.957836666666665 56.18685166666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004224-PLANSETE-87-c-12_4224.JPG LVVA-001679-0217-004224-PLANSETE-87-c-12_4224.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4782.0 4554.0\n41238.0 4434.0\n41262.0 37212.0\n4806.0 37296.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004224-PLANSETE-87-c-12_4224.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004224-PLANSETE-87-c-12_4224.vrt LVVA-001679-0217-004224-PLANSETE-87-c-12_4224.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004224-PLANSETE-87-c-12_4224.cut.vrt LVVA-001679-0217-004224-PLANSETE-87-c-12_4224.xyz