#!/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 5190.0 7092.0 24.020743333333332 56.88465166666667 -gcp 40902.0 7098.0 24.041575 56.88465166666667 -gcp 40872.0 39636.0 24.041575 56.87423666666667 -gcp 5160.0 39630.0 24.020743333333332 56.87423666666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-002651-PLANSETE-039-d-5-IV_2651.JPG LVVA-001679-0217-002651-PLANSETE-039-d-5-IV_2651.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5190.0 7092.0\n40902.0 7098.0\n40872.0 39636.0\n5160.0 39630.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-002651-PLANSETE-039-d-5-IV_2651.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-002651-PLANSETE-039-d-5-IV_2651.vrt LVVA-001679-0217-002651-PLANSETE-039-d-5-IV_2651.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-002651-PLANSETE-039-d-5-IV_2651.cut.vrt LVVA-001679-0217-002651-PLANSETE-039-d-5-IV_2651.xyz