#!/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 4872.0 6510.0 23.375 56.45764 -gcp 41010.0 6576.0 23.416661666666666 56.45764 -gcp 41052.0 40338.0 23.416661666666666 56.43681 -gcp 4878.0 40248.0 23.375 56.43681 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-002237-PLANSETE-031-c-10_2237.JPG LVVA-001679-0217-002237-PLANSETE-031-c-10_2237.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4872.0 6510.0\n41010.0 6576.0\n41052.0 40338.0\n4878.0 40248.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-002237-PLANSETE-031-c-10_2237.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-002237-PLANSETE-031-c-10_2237.vrt LVVA-001679-0217-002237-PLANSETE-031-c-10_2237.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-002237-PLANSETE-031-c-10_2237.cut.vrt LVVA-001679-0217-002237-PLANSETE-031-c-10_2237.xyz