#!/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 4776.0 6552.0 27.166141666666668 56.051458333333336 -gcp 41346.0 6480.0 27.18697166666667 56.051458333333336 -gcp 41364.0 38958.0 27.18697166666667 56.041043333333334 -gcp 4788.0 39036.0 27.166141666666668 56.041043333333334 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004297-PLANSETE-96-h-5-III_4297.JPG LVVA-001679-0217-004297-PLANSETE-96-h-5-III_4297.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4776.0 6552.0\n41346.0 6480.0\n41364.0 38958.0\n4788.0 39036.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004297-PLANSETE-96-h-5-III_4297.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004297-PLANSETE-96-h-5-III_4297.vrt LVVA-001679-0217-004297-PLANSETE-96-h-5-III_4297.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004297-PLANSETE-96-h-5-III_4297.cut.vrt LVVA-001679-0217-004297-PLANSETE-96-h-5-III_4297.xyz