#!/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 6768.0 8442.0 27.374446666666667 56.33266 -gcp 43026.0 8184.0 27.416106666666668 56.33266 -gcp 43218.0 40926.0 27.416106666666668 56.31183166666667 -gcp 6918.0 41148.0 27.374446666666667 56.31183166666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004364-PLANSETE-95-i-2_4364.JPG LVVA-001679-0217-004364-PLANSETE-95-i-2_4364.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "6768.0 8442.0\n43026.0 8184.0\n43218.0 40926.0\n6918.0 41148.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004364-PLANSETE-95-i-2_4364.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004364-PLANSETE-95-i-2_4364.vrt LVVA-001679-0217-004364-PLANSETE-95-i-2_4364.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004364-PLANSETE-95-i-2_4364.cut.vrt LVVA-001679-0217-004364-PLANSETE-95-i-2_4364.xyz