#!/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 7050.0 9162.0 27.374446666666667 56.31183166666667 -gcp 43332.0 9096.0 27.416106666666668 56.31183166666667 -gcp 43368.0 41838.0 27.416106666666668 56.291001666666666 -gcp 7050.0 41886.0 27.374446666666667 56.291001666666666 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004365-PLANSETE-95-i-6_4365.JPG LVVA-001679-0217-004365-PLANSETE-95-i-6_4365.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "7050.0 9162.0\n43332.0 9096.0\n43368.0 41838.0\n7050.0 41886.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004365-PLANSETE-95-i-6_4365.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004365-PLANSETE-95-i-6_4365.vrt LVVA-001679-0217-004365-PLANSETE-95-i-6_4365.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004365-PLANSETE-95-i-6_4365.cut.vrt LVVA-001679-0217-004365-PLANSETE-95-i-6_4365.xyz