#!/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 4368.0 5766.0 21.416938333333334 56.74925833333333 -gcp 40248.0 5760.0 21.458598333333335 56.74925833333333 -gcp 40380.0 39492.0 21.458598333333335 56.72842833333333 -gcp 4494.0 39516.0 21.416938333333334 56.72842833333333 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-000185-PLANSETE-005-c-3_0185.JPG LVVA-001679-0217-000185-PLANSETE-005-c-3_0185.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4368.0 5766.0\n40248.0 5760.0\n40380.0 39492.0\n4494.0 39516.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-000185-PLANSETE-005-c-3_0185.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-000185-PLANSETE-005-c-3_0185.vrt LVVA-001679-0217-000185-PLANSETE-005-c-3_0185.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-000185-PLANSETE-005-c-3_0185.cut.vrt LVVA-001679-0217-000185-PLANSETE-005-c-3_0185.xyz