#!/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 4926.0 6312.0 27.624411666666667 56.06187166666667 -gcp 41544.0 6246.0 27.666073333333333 56.06187166666667 -gcp 41562.0 39018.0 27.666073333333333 56.041043333333334 -gcp 4920.0 39066.0 27.624411666666667 56.041043333333334 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004359-PLANSETE-105-g-8_4359.JPG LVVA-001679-0217-004359-PLANSETE-105-g-8_4359.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4926.0 6312.0\n41544.0 6246.0\n41562.0 39018.0\n4920.0 39066.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004359-PLANSETE-105-g-8_4359.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004359-PLANSETE-105-g-8_4359.vrt LVVA-001679-0217-004359-PLANSETE-105-g-8_4359.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004359-PLANSETE-105-g-8_4359.cut.vrt LVVA-001679-0217-004359-PLANSETE-105-g-8_4359.xyz