#!/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 5148.0 6444.0 26.791193333333332 56.54096 -gcp 41208.0 6408.0 26.832855 56.54096 -gcp 41226.0 39258.0 26.832855 56.52013 -gcp 5130.0 39282.0 26.791193333333332 56.52013 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003570-PLANSETE-085-h-12_3570.JPG LVVA-001679-0217-003570-PLANSETE-085-h-12_3570.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5148.0 6444.0\n41208.0 6408.0\n41226.0 39258.0\n5130.0 39282.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003570-PLANSETE-085-h-12_3570.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003570-PLANSETE-085-h-12_3570.vrt LVVA-001679-0217-003570-PLANSETE-085-h-12_3570.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003570-PLANSETE-085-h-12_3570.cut.vrt LVVA-001679-0217-003570-PLANSETE-085-h-12_3570.xyz